WO2024219442A1 - 抗体-薬物コンジュゲートと他の薬剤との組み合わせ - Google Patents
抗体-薬物コンジュゲートと他の薬剤との組み合わせ Download PDFInfo
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- WO2024219442A1 WO2024219442A1 PCT/JP2024/015357 JP2024015357W WO2024219442A1 WO 2024219442 A1 WO2024219442 A1 WO 2024219442A1 JP 2024015357 W JP2024015357 W JP 2024015357W WO 2024219442 A1 WO2024219442 A1 WO 2024219442A1
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- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
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- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/445—Non condensed piperidines, e.g. piperocaine
- A61K31/4523—Non condensed piperidines, e.g. piperocaine containing further heterocyclic ring systems
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- A61K31/573—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane or progesterone substituted in position 21, e.g. cortisone, dexamethasone, prednisone or aldosterone
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- A61K31/7028—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages
- A61K31/7034—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin
- A61K31/704—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin attached to a condensed carbocyclic ring system, e.g. sennosides, thiocolchicosides, escin, daunorubicin
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
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- C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
- C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
- C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
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- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/04—Linear peptides containing only normal peptide links
- C07K7/06—Linear peptides containing only normal peptide links having 5 to 11 amino acids
Definitions
- the present invention relates to a pharmaceutical composition characterized in that a specific antibody-drug conjugate is administered in combination with another drug, and/or a treatment method characterized in that a specific antibody-drug conjugate is administered in combination with another drug to an individual.
- B-NHL B-cell non-Hodgkin's lymphoma
- CLL chronic lymphocytic leukemia
- Rituximab is an antibody drug that targets CD20, and was approved by the FDA in 1997 as a treatment for B-NHL (Non-Patent Document 1).
- the main mechanisms of action of Rituximab are direct induction of apoptosis, ADCC (antibody-dependent cellular cytotoxicity), and CDC (complement-dependent cytotoxicity).
- R-CHOP therapy BR therapy (combination therapy of Bendamustine and Rituximab), R2 therapy (combination therapy of Rituximab and Lenalidomide), etc.
- Non-Patent Documents 2, 3, 4 are widely used for diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL), and chronic lymphocytic leukemia (CLL) that express CD20, the target of Rituximab (Non-Patent Documents 2, 3, 4).
- DLBCL diffuse large B-cell lymphoma
- FL follicular lymphoma
- CLL chronic lymphocytic leukemia
- DLBCL a combination therapy of the anti-CD19 antibody Tafasitamab and the immunomodulatory drug Lenalidomide
- CLL a single agent of the BTK inhibitor Ibrutinib, a single agent of the BCL-2 inhibitor Venetoclax, and even a combination therapy of Venetoclax and Rituximab, VR therapy, are known (Non-Patent Document 6).
- therapeutic drugs with various mechanisms of action and combination therapies thereof for B-NHL and CLL are being developed, but there are patients who show re
- ADCs Antibody-drug conjugates
- ADCs which combine a cytotoxic drug with an antibody that binds to an antigen expressed on the surface of cancer cells and can be internalized by the cells, are expected to be able to selectively deliver drugs to cancer cells, accumulating the drugs within the cancer cells and killing the cancer cells (Non-Patent Documents 7-12).
- Non-Patent Documents 13 and 14 Polivy (registered trademark) (polatuzumab vedotin), which targets CD79b, and ZYNLONTA (registered trademark) (loncastuximab tesirin), which targets CD19, have been approved as treatments for DLBCL (Non-Patent Documents 13 and 14). Naratuximab emtansine, which targets CD37, is currently undergoing clinical trials in combination with Rituximab (Non-Patent Document 15).
- One type of antibody-drug conjugate known is one that consists of an antibody and the topoisomerase I inhibitor exatecan (Patent Documents 1 to 7, Non-Patent Documents 16 to 19).
- Patent Documents 1 to 7 also state that the antibody-drug conjugates can be administered together with various cancer therapeutic agents.
- the objective of the present invention is to provide a pharmaceutical composition characterized in that a specific antibody-drug conjugate is administered in combination with another drug, and/or a treatment method characterized in that a specific antibody-drug conjugate is administered in combination with another drug to an individual.
- the inventors conducted extensive research to achieve the above object, and discovered that an excellent combination effect was achieved by administering an anti-CD37 antibody-drug conjugate in combination with one or more other drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents, thus completing the present invention.
- a pharmaceutical composition comprising an anti-CD37 antibody-drug conjugate, the anti-CD37 antibody-drug conjugate is administered in combination with one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent;
- the anti-CD37 antibody-drug conjugate has the formula
- A represents the binding site for the anti-CD37 antibody.
- a pharmaceutical composition comprising an anti-CD37 antibody-drug conjugate in which a drug linker represented by the formula: [2]
- the anti-CD37 antibody is an antibody comprising a heavy chain and a light chain selected from the group consisting of the following (e) to (h): (e) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (f) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6; (g) a light chain consisting of the amino acid sequence of amino acids 21 to 234 of the full-length light chain amino acid sequence shown in SEQ ID NO:
- [7] The pharmaceutical composition according to any one of [1] to [5], wherein the average number of drug linkers bound per antibody in the anti-CD37 antibody-drug conjugate is in the range of 3.5 to 4.5.
- the molecular targeted drug is one or more drugs selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the anti-CD20 antibody is rituximab or obinutuzumab.
- the pharmaceutical composition according to [8] or [9], wherein the anti-CD19 antibody is tafasitamab.
- [20] The pharmaceutical composition according to any one of [1] to [19] for the treatment of at least one selected from the group consisting of diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, marginal body lymphoma, Burkitt's lymphoma, chronic lymphocytic leukemia, peripheral T-cell lymphoma, cutaneous T-cell lymphoma and other T-cell lymphomas, myelodysplastic syndromes, and acute myeloid leukemia.
- the pharmaceutical composition of [20] for the treatment of diffuse large B-cell lymphoma for the treatment of diffuse large B-cell lymphoma.
- the pharmaceutical composition of [20] for the treatment of chronic lymphocytic leukemia for the treatment of chronic lymphocytic leukemia.
- a pharmaceutical composition comprising an anti-CD37 antibody-drug conjugate, the anti-CD37 antibody-drug conjugate is administered in combination with one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent;
- the anti-CD37 antibody-drug conjugate has the formula
- a pharmaceutical composition comprising an anti-CD37 antibody-drug conjugate represented by the formula: [25]
- the anti-CD37 antibody is an antibody comprising a heavy chain and a light chain selected from the group consisting of the following (e) to (h): (e) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (f) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6; (g) a light chain consisting of the amino acid sequence of amino acids 21 to 234 of the full-length light chain amino acid sequence shown in SEQ ID NO:
- the molecular targeted drug is one or more drugs selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the anti-CD20 antibody is rituximab or obinutuzumab.
- the pharmaceutical composition according to [31] or [32], wherein the anti-CD19 antibody is tafasitamab.
- the BCL-2 inhibitor is venetoclax or a pharmacologically acceptable salt thereof.
- [43] The pharmaceutical composition according to any one of [24] to [42] for the treatment of at least one selected from the group consisting of diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, marginal body lymphoma, Burkitt's lymphoma, chronic lymphocytic leukemia, peripheral T-cell lymphoma, cutaneous T-cell lymphoma and other T-cell lymphomas, myelodysplastic syndromes, and acute myeloid leukemia.
- the pharmaceutical composition of [43] for the treatment of diffuse large B-cell lymphoma for treating chronic lymphocytic leukemia.
- a method for treatment comprising administering to an individual in need of treatment a combination of an anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent,
- the anti-CD37 antibody-drug conjugate has the formula
- A represents the binding site with the antibody.
- the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region selected from the group consisting of the following (a) to (d): (a) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (b) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain
- the anti-CD37 antibody is an antibody comprising a heavy chain and a light chain selected from the group consisting of the following (e) to (h): (e) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (f) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6; (g) a light chain consisting of the amino acid sequence of amino acids 21 to 234 of the full-length light chain amino acid sequence shown in SEQ ID NO:
- [54] The treatment method according to any one of [47] to [53], wherein the molecular targeted drug is one or more drugs selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the molecular targeted drug is one or more drugs selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the anti-CD20 antibody is rituximab or obinutuzumab.
- the treatment method according to [54] or [55], wherein the anti-CD19 antibody is tafasitamab.
- the BCL-2 inhibitor is venetoclax or a pharmacologically acceptable salt thereof.
- [66] The method for treating at least one selected from the group consisting of diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, marginal body lymphoma, Burkitt's lymphoma, chronic lymphocytic leukemia, peripheral T-cell lymphoma, cutaneous T-cell lymphoma and other T-cell lymphomas, myelodysplastic syndromes, and acute myeloid leukemia, according to any one of [47] to [65].
- [67] The therapeutic method according to [66] for the treatment of diffuse large B-cell lymphoma.
- the therapeutic method according to [66] for the treatment of chronic lymphocytic leukemia is a selected from the group consisting of diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, marginal body lymphoma, Burkitt's lymphoma, chronic lymphocytic leukemia, peripheral T-cell lymphoma,
- a method for treatment comprising administering to an individual in need of treatment a combination of an anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent,
- the anti-CD37 antibody-drug conjugate has the formula
- the therapeutic method comprises administering to the patient an anti-CD37 antibody-drug conjugate as defined above.
- the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region selected from the group consisting of the following (a) to (d): (a) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (b) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6; (c) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions in the full-
- the anti-CD37 antibody is an antibody comprising a heavy chain and a light chain selected from the group consisting of the following (e) to (h): (e) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (f) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6; (g) a light chain consisting of the amino acid sequence of amino acids 21 to 234 of the full-length light chain amino acid sequence shown in SEQ ID NO:
- the molecular targeted drug is one or more drugs selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the anti-CD20 antibody is rituximab or obinutuzumab.
- the anti-CD19 antibody is tafasitamab.
- the BCL-2 inhibitor is venetoclax or a pharmacologically acceptable salt thereof.
- the anti-CD37 antibody-drug conjugate has the formula
- A represents the binding site for the anti-CD37 antibody.
- an antibody are linked via a thioether bond to a drug linker represented by the following formula:
- the antibody-drug conjugate, wherein the other drug is one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent.
- the antibody-drug conjugate of [100] wherein the anti-CD20 antibody is rituximab or obinutuzumab.
- [112] The antibody-drug conjugate of any one of [93] to [111] for the treatment of at least one selected from the group consisting of diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, marginal zone lymphoma, Burkitt's lymphoma, chronic lymphocytic leukemia, peripheral T-cell lymphoma, cutaneous T-cell lymphoma and other T-cell lymphomas, myelodysplastic syndromes, and acute myeloid leukemia.
- the antibody-drug conjugate of [112] for the treatment of diffuse large B-cell lymphoma for the treatment of diffuse large B-cell lymphoma.
- the antibody is an anti-CD37 antibody
- the drug linker is bound to the antibody via a thioether bond
- n represents the average number of drug linkers bound per antibody.
- the anti-CD20 antibody is rituximab or obinutuzumab.
- the anti-CD37 antibody-drug conjugate has the formula
- A represents the binding site for the anti-CD37 antibody.
- an antibody are linked via a thioether bond to a drug linker represented by the following formula:
- the other drug is one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent.
- the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region selected from the group consisting of the following (a) to (d): (a) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (b) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6; (c) a light chain variable region consisting of the amino acid sequence of the 21st to 128th
- [141] The use of [139] or [140], wherein the anti-CD37 antibody is an antibody comprising a heavy chain and a light chain selected from the group consisting of the following (e) to (h): (e) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (f) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6; (g) a light chain consisting of the amino acid sequence of amino acids 21 to 234 of the full-length light chain amino acid sequence shown in SEQ ID NO:
- [146] The use of any one of [139] to [145], wherein the molecular targeted drug is one or more agents selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the molecular targeted drug is one or more agents selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the anti-CD20 antibody is rituximab or obinutuzumab.
- the use of [146] or [147], wherein the anti-CD19 antibody is tafasitamab.
- the BCL-2 inhibitor is venetoclax or a pharmacologically acceptable salt thereof.
- [158] Use of any one of [139] to [157] for the treatment of at least one selected from the group consisting of diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, marginal body lymphoma, Burkitt's lymphoma, chronic lymphocytic leukemia, peripheral T-cell lymphoma, cutaneous T-cell lymphoma and other T-cell lymphomas, myelodysplastic syndromes, and acute myeloid leukemia.
- [159] Use of [158] for the treatment of diffuse large B-cell lymphoma.
- [160] Use of [158] for the treatment of chronic lymphocytic leukemia.
- the anti-CD37 antibody-drug conjugate has the formula
- the antibody is an anti-CD37 antibody
- the drug linker is bound to the antibody via a thioether bond
- n represents the average number of drug linkers bound per antibody.
- the other drug is one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent.
- the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region selected from the group consisting of the following (a) to (d): (a) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (b) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6; (c) a light chain variable region consisting of the amino acid sequence of the 21st to 1
- [164] The use of [162] or [163], wherein the anti-CD37 antibody is an antibody comprising a heavy chain and a light chain selected from the group consisting of the following (e) to (h): (e) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (f) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6; (g) a light chain consisting of the amino acid sequence of amino acids 21 to 234 of the full-length light chain amino acid sequence shown in SEQ ID
- [165] The use of any one of [162] to [164], wherein the anti-CD37 antibody lacks a lysine residue at the carboxyl terminus of the heavy chain.
- [166] The use of any one of [162] to [165], wherein the average number of drug linkers bound per antibody in the antibody-drug conjugate is in the range of 2 to 8.
- [167] The use of any one of [162] to [166], wherein the average number of drug linkers bound per antibody in the antibody-drug conjugate is in the range of 7 to 8.
- [168] The use of any one of [162] to [166], wherein the average number of drug linkers bound per antibody in the antibody-drug conjugate is in the range of 3.5 to 4.5.
- [169] The use of any one of [162] to [168], wherein the molecular targeted drug is one or more agents selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the molecular targeted drug is one or more agents selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the anti-CD20 antibody is rituximab or obinutuzumab.
- [171] The use of [169] or [170], wherein the anti-CD19 antibody is tafasitamab.
- the BCL-2 inhibitor is venetoclax or a pharmacologically acceptable salt thereof.
- [173] The use of any one of [169] to [172], wherein the BTK inhibitor is ibrutinib or a pharmacologically acceptable salt thereof.
- the alkylating agent is bendamustine or a pharmacologically acceptable salt thereof.
- the immunomodulatory agent is lenalidomide or a pharmacologically acceptable salt thereof.
- the other drug is a combination of rituximab and bendamustine or a pharmacologically acceptable salt thereof.
- [181] Use of any one of [162] to [180] for the treatment of at least one selected from the group consisting of diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, marginal body lymphoma, Burkitt's lymphoma, chronic lymphocytic leukemia, peripheral T-cell lymphoma, cutaneous T-cell lymphoma and other T-cell lymphomas, myelodysplastic syndromes, and acute myeloid leukemia.
- [182] Use of [181] for the treatment of diffuse large B-cell lymphoma.
- [183] Use of [181] for the treatment of chronic lymphocytic leukemia.
- [184] Use of [181] for the treatment of follicular lymphoma.
- a pharmaceutical composition comprising an anti-CD37 antibody-drug conjugate, The pharmaceutical composition is administered in combination with the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent.
- a molecular targeted drug a drug involved in R-CHOP therapy
- a drug involved in R-CHP therapy a drug involved in R-CHP therapy
- an alkylating agent an immunomodulatory agent.
- A2 The pharmaceutical composition of [A1], wherein the drug of the anti-CD37 antibody-drug conjugate is a topoisomerase I inhibitor.
- An anti-CD37 antibody-drug conjugate is administered in combination with one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent;
- the anti-CD37 antibody-drug conjugate has the formula
- A represents the binding site for the anti-CD37 antibody.
- the pharmaceutical composition of any one of [A1] to [A6], which is an anti-CD37 antibody-drug conjugate in which a drug linker represented by the formula: [A8] The pharmaceutical composition of [A7], wherein the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region selected from the group consisting of the following (a) to (d): (a) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (b) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of
- [A9] The pharmaceutical composition of [A7] or [A8], wherein the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region described in the following (a): (a) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions in the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions in the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4.
- [A10] The pharmaceutical composition of [A7] or [A8], wherein the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region described in the following (b): (b) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6.
- [A11] The pharmaceutical composition of [A7] or [A8], wherein the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region described in (c) below: (c) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 8.
- [A12] The pharmaceutical composition of [A7] or [A8], wherein the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region described in (d) below: (d) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 10.
- [A14] The pharmaceutical composition of any one of [A7] to [A9] and [A13], wherein the anti-CD37 antibody is an antibody comprising a heavy chain and a light chain described in (e) below: (e) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4.
- [A22] The pharmaceutical composition according to any one of [A7] to [A21], wherein the molecular targeted drug is one or more drugs selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the molecular targeted drug is one or more drugs selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the pharmaceutical composition of [A22], wherein the anti-CD20 antibody is rituximab.
- the pharmaceutical composition of [A22], wherein the anti-CD20 antibody is obinutuzumab.
- [A25] The pharmaceutical composition of any one of [A22] to [A24], wherein the anti-CD19 antibody is tafasitamab.
- [A26] The pharmaceutical composition of any one of [A22] to [A25], wherein the BCL-2 inhibitor is venetoclax or a pharmacologically acceptable salt thereof.
- [A27] The pharmaceutical composition according to any one of [A22] to [A26], wherein the BTK inhibitor is ibrutinib or a pharmacologically acceptable salt thereof.
- [A28] Any one of the pharmaceutical compositions of [A22] to [A26], wherein the BTK inhibitor is acalabrutinib or a pharmacologically acceptable salt thereof.
- [A29] The pharmaceutical composition of any one of [A22] to [A26], wherein the BTK inhibitor is zanubrutinib or a pharmacologically acceptable salt thereof.
- [A30] The pharmaceutical composition according to any one of [A7] to [A29], wherein the alkylating agent is bendamustine or a pharmacologically acceptable salt thereof.
- [A31] The pharmaceutical composition of any one of [A7] to [A30], wherein the immunomodulatory agent is lenalidomide or a pharmacologically acceptable salt thereof.
- [A32] The pharmaceutical composition of any one of [A7] to [A21], wherein the other drug is a combination of rituximab and bendamustine or a pharmacologically acceptable salt thereof.
- [A36] The pharmaceutical composition according to any one of [A7] to [A21], wherein the other drug is a drug involved in R-CHOP therapy.
- [A37] The pharmaceutical composition according to any one of [A7] to [A21], wherein the other drug is a drug related to R-CHP therapy.
- a pharmaceutical composition of [A40] for the treatment of chronic lymphocytic leukemia for the treatment of at least one selected from the group consisting of diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, marginal body lymphoma, Burkitt's lymphoma, chronic lymphocytic leukemia, peripheral T-cell lymphoma, cutaneous T-cell lymphoma,
- a pharmaceutical composition of [A40] for the treatment of follicular lymphoma [A44] A pharmaceutical composition comprising an anti-CD37 antibody-drug conjugate, the anti-CD37 antibody-drug conjugate is administered in combination with one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent;
- the anti-CD37 antibody-drug conjugate has the formula
- the antibody is an anti-CD37 antibody
- the drug linker is bound to the antibody via a thioether bond
- n represents the average number of drug linkers bound per antibody.
- [A46] The pharmaceutical composition of [A44] or [A45], wherein the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region described in the following (a): (a) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4.
- [A47] The pharmaceutical composition of [A44] or [A45], wherein the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region described in (b) below: (b) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 6.
- [A48] The pharmaceutical composition of [A44] or [A45], wherein the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region described in (c) below: (c) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 8.
- [A49] The pharmaceutical composition of [A44] or [A45], wherein the anti-CD37 antibody is an antibody comprising a heavy chain variable region and a light chain variable region described in (d) below: (d) a light chain variable region consisting of the amino acid sequence of the 21st to 128th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain variable region consisting of the amino acid sequence of the 20th to 138th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 10.
- [A51] The pharmaceutical composition of any one of [A44] to [A46] and [A50], wherein the anti-CD37 antibody is an antibody comprising a heavy chain and a light chain described in (e) below: (e) a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2, and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4.
- the molecular targeted drug is one or more drugs selected from the group consisting of an anti-CD20 antibody, an anti-CD19 antibody, a BCL-2 inhibitor, and a BTK inhibitor.
- the pharmaceutical composition of [A59], wherein the anti-CD20 antibody is rituximab.
- the pharmaceutical composition of [A59], wherein the anti-CD20 antibody is obinutuzumab.
- the pharmaceutical composition of any one of [A59] to [A61], wherein the anti-CD19 antibody is tafasitamab.
- [A63] The pharmaceutical composition of any one of [A59] to [A62], wherein the BCL-2 inhibitor is venetoclax or a pharmacologically acceptable salt thereof.
- [A64] The pharmaceutical composition according to any one of [A59] to [A63], wherein the BTK inhibitor is ibrutinib or a pharmacologically acceptable salt thereof.
- [A66] The pharmaceutical composition of any one of [A59] to [A63], wherein the BTK inhibitor is zanubrutinib or a pharmacologically acceptable salt thereof.
- [A67] The pharmaceutical composition according to any one of [A44] to [A66], wherein the alkylating agent is bendamustine or a pharmacologically acceptable salt thereof.
- [A68] The pharmaceutical composition according to any one of [A44] to [A67], wherein the immunomodulatory agent is lenalidomide or a pharmacologically acceptable salt thereof.
- [A69] The pharmaceutical composition of any one of [A44] to [A58], wherein the other drug is a combination of rituximab and bendamustine or a pharmacologically acceptable salt thereof.
- [A70] The pharmaceutical composition of any one of [A44] to [A58], wherein the other drug is a combination of tafasitamab and lenalidomide or a pharmacologically acceptable salt thereof.
- [A71] The pharmaceutical composition according to any one of [A44] to [A58], wherein the other drug is a combination of rituximab and lenalidomide or a pharmacologically acceptable salt thereof.
- Any one of the pharmaceutical compositions of [A44] to [A58], wherein the other drug is a combination of rituximab and venetoclax or a pharmacologically acceptable salt thereof.
- [A44] The pharmaceutical composition according to any one of [A44] to [A58], wherein the other drug is a drug involved in R-CHOP therapy.
- [A73] The pharmaceutical composition according to any one of [A44] to [A58], wherein the other drug is a drug related to R-CHP therapy.
- the pharmaceutical composition of [A76] for the treatment of follicular lymphoma is selected from the group consisting of diffuse large B-cell lymphoma, follicular lymphoma, mantle cell lymphoma, marginal body lymphoma, Burkitt's lymphoma, chronic lymphocytic leukemia, peripheral T-
- a method of treatment comprising administering to an individual in need of treatment a combination of an anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of a molecular targeted drug, a drug associated with R-CHOP therapy, a drug associated with R-CHP therapy, an alkylating agent, and an immunomodulatory agent, wherein the anti-CD37 antibody-drug conjugate and the other drugs are defined in any one of [A1] to [A37] and [A44] to [A73].
- [B2] The method for treatment according to [B1], characterized in that the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs involved in R-CHOP therapy, drugs involved in R-CHP therapy, alkylating agents, and immunomodulators are contained as active ingredients in separate preparations and administered simultaneously or at different times.
- [B3] The treatment method according to [B1], in which the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs involved in R-CHOP therapy, drugs involved in R-CHP therapy, alkylating agents, and immunomodulatory agents are contained as active ingredients in the same formulation.
- [D1] Use of an anti-CD37 antibody-drug conjugate for the manufacture of a medicament for treating a disease by administering in combination with one or more other drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents, wherein the anti-CD37 antibody-drug conjugate and the other drugs are defined in any one of [A1] to [A37] and [A44] to [A73].
- drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents, wherein the anti-CD37 antibody-drug conjugate and the other drugs are defined in any one of [A1] to [A37] and [A44] to [A73].
- [D2] Use of [D1], characterized in that the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents are contained as active ingredients in separate preparations and administered simultaneously or at different times.
- [D3] Use of [D1], in which the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents are contained as active ingredients in the same formulation.
- [D4] Use of any one of [D1] to [D3] for the treatment of at least one disease selected from the group consisting of diseases defined in [A40] or [A76].
- [F2] The combination drug of [F1], characterized in that the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs involved in R-CHOP therapy, drugs involved in R-CHP therapy, alkylating agents, and immunomodulators are contained as active ingredients in separate preparations and administered simultaneously or at different times.
- [F3] The combination drug of [F1], in which the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs involved in R-CHOP therapy, drugs involved in R-CHP therapy, alkylating agents, and immunomodulatory agents are contained as active ingredients in the same formulation.
- a pharmaceutical combination for combined administration comprising an anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of a molecular targeted drug, a drug involved in R-CHOP therapy, a drug involved in R-CHP therapy, an alkylating agent, and an immunomodulatory agent, wherein the anti-CD37 antibody-drug conjugate and the other drugs are defined in any one of [A1] to [A37] and [A44] to [A73].
- [G2] The pharmaceutical combination of [G1], characterized in that the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs involved in R-CHOP therapy, drugs involved in R-CHP therapy, alkylating agents, and immunomodulators are contained as active ingredients in separate preparations and administered simultaneously or at different times.
- [G3] A pharmaceutical combination of [G1], in which the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs involved in R-CHOP therapy, drugs involved in R-CHP therapy, alkylating agents, and immunomodulatory agents are contained as active ingredients in the same formulation.
- [G4] A pharmaceutical combination of any one of [G1] to [G3] for the treatment of at least one disease selected from the group consisting of diseases defined in [A40] or [A76].
- an anti-CD37 antibody-drug conjugate in combination with one or more other drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents for the treatment of a disease, wherein the anti-CD37 antibody-drug conjugate and the other drugs are defined in any one of [A1] to [A37] and [A44] to [A73].
- [H2] Use of [H1], characterized in that the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents are contained as active ingredients in separate preparations and administered simultaneously or at different times.
- [H3] Use of [H1], in which the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents are contained as active ingredients in the same formulation.
- [H4] Use of any one of [H1] to [H3] for the treatment of at least one disease selected from the group consisting of diseases defined in [A40] or [A76].
- a pharmaceutical comprising an anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of a molecular targeted drug, a drug related to R-CHOP therapy, a drug related to R-CHP therapy, an alkylating agent, and an immunomodulatory agent, wherein the anti-CD37 antibody-drug conjugate and the other drugs are administered in combination, and the anti-CD37 antibody-drug conjugate and the other drugs are defined in any one of [A1] to [A37] and [A44] to [A73].
- [I2] The pharmaceutical agent according to [I1], characterized in that the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs involved in R-CHOP therapy, drugs involved in R-CHP therapy, alkylating agents, and immunomodulators are contained as active ingredients in separate preparations and administered simultaneously or at different times.
- [I3] The pharmaceutical agent according to [I1], in which the anti-CD37 antibody-drug conjugate and one or more other drugs selected from the group consisting of molecular targeted drugs, drugs involved in R-CHOP therapy, drugs involved in R-CHP therapy, alkylating agents, and immunomodulatory agents are contained as active ingredients in the same formulation.
- the present invention can provide a pharmaceutical composition characterized by administering a specific antibody-drug conjugate in combination with another drug, and/or a treatment method characterized by administering a specific antibody-drug conjugate in combination with another drug to an individual.
- FIG. 1 shows the nucleotide sequence encoding the hmAb-L11 light chain.
- FIG. 1 shows the amino acid sequence of the full-length light chain of hmAb-L11.
- FIG. 1 shows the nucleotide sequence encoding the hmAb-H11 heavy chain.
- FIG. 1 shows the amino acid sequence of the full-length heavy chain of hmAb-H11.
- FIG. 1 shows the nucleotide sequence encoding the hmAb-H541 heavy chain.
- FIG. 1 shows the amino acid sequence of the full-length heavy chain of hmAb-H541.
- FIG. 1 shows the nucleotide sequence encoding the hmAb-H551 heavy chain.
- FIG. 1 shows the nucleotide sequence encoding the hmAb-H551 heavy chain.
- FIG. 1 shows the amino acid sequence of the full-length heavy chain of hmAb-H551.
- FIG. 1 shows the nucleotide sequence encoding the hmAb-H11a heavy chain.
- FIG. 1 shows the amino acid sequence of the full-length heavy chain of hmAb-H11a.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line OCI-LY7.
- This figure shows the rate of change in tumor volume on Day 22 for each individual, based on the tumor volume on Day 12 as a baseline, due to the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line OCI-LY7.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line SU-DHL-4.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Bendamustine (RB) on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line SU-DHL-4.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Tafasitamab on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line SU-DHL-4.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Tafasitamab-Lenalidamide on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line SU-DHL-4.
- This figure shows the rate of change in tumor volume on Day 38 for each individual, based on the baseline tumor volume on Day 16, in terms of the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugate and/or Rituximab, humanized anti-CD37 antibody-drug conjugate and/or Rituximab + Bendamustine (RB), humanized anti-CD37 antibody-drug conjugate and/or Tafasitamab, and humanized anti-CD37 antibody-drug conjugate and/or Tafasitamab-Lenalidamide on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line SU-DHL-4.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab on SCID mice transplanted with the CD37-positive human follicular lymphoma cell line DOHH-2.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Bendamustine (RB) on SCID mice transplanted with the CD37-positive human follicular lymphoma cell line DOHH-2.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Lenalidomide (R-Lenalidamide) on SCID mice transplanted with the CD37-positive human follicular lymphoma cell line DOHH-2.
- This figure shows the rate of change in tumor volume on Day 44 for each individual, based on the baseline tumor volume on Day 23, due to the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab, humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Bendamustine (RB), and humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Lenalidomide (R-Lenalidomide) on SCID mice transplanted with the CD37-positive human follicular lymphoma cell line DOHH-2.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-13.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Bendamustine (RB) on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-13.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Venetoclax on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-13.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Venetoclax (R-Venetoclax) on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-13.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Ibrutinib on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-13.
- This figure shows the rate of change in tumor volume on Day 35 for each individual, based on the baseline tumor volume on Day 14, in the in vivo anti-tumor effects of humanized anti-CD37 antibody-drug conjugates and/or Rituximab, humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Bendamustine (RB), humanized anti-CD37 antibody-drug conjugates and/or Venetoclax, humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Venetoclax (R-Venetoclax), and humanized anti-CD37 antibody-drug conjugates and/or Ibrutinib on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-13.
- RB Bendamustine
- humanized anti-CD37 antibody-drug conjugates and/or Venetoclax humanized anti-CD37 antibody-drug conjugates and/or Rituximab + Venetoclax (
- This figure shows the in vitro cellular internalization rate of anti-CD37 antibody-drug conjugate (1) when fluorescently labeled anti-CD37 antibody-drug conjugate (1) and Rituximab or IgG1 were added to the CD37-positive human diffuse large B-cell lymphoma cell line OCI-LY7.
- This figure shows the in vitro cellular internalization rate of anti-CD37 antibody-drug conjugate (1) when fluorescently labeled anti-CD37 antibody-drug conjugate (1) and Rituximab or IgG1 were added to the CD37-positive human diffuse large B-cell lymphoma cell line SU-DHL-4.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line OCI-LY7.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or R-CHP on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line OCI-LY7.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or R-CHOP on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line OCI-LY7.
- This figure shows the rate of change in tumor volume on Day 18 for each individual, based on the baseline tumor volume on Day 10, due to the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugate and/or Rituximab, humanized anti-CD37 antibody-drug conjugate and/or R-CHP, and humanized anti-CD37 antibody-drug conjugate and/or R-CHOP on SCID mice transplanted with the CD37-positive human diffuse large B-cell lymphoma cell line OCI-LY7.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Rituximab on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-3.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Obinutuzumab on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-3.
- This figure shows the rate of change in tumor volume on Day 28 for each individual, based on the tumor volume on Day 13 as a baseline, due to the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugate and/or Rituximab, and humanized anti-CD37 antibody-drug conjugate and/or Obinutuzumab on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-3.
- This figure shows the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Obinutuzumab on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-13.
- This figure shows the rate of change in tumor volume on Day 25 for each individual, based on the tumor volume on Day 10 as a baseline, due to the in vivo anti-tumor effect of humanized anti-CD37 antibody-drug conjugates and/or Obinutuzumab on SCID mice transplanted with the CD37-positive human chronic lymphocytic leukemia cell line JVM-13.
- the term "gene” refers to a nucleic acid molecule containing a nucleotide sequence encoding the amino acids of a protein or a complementary strand thereof.
- polynucleotides, oligonucleotides, DNA, mRNA, cDNA, cRNA, etc. having a nucleotide sequence encoding the amino acids of a protein or a nucleotide sequence complementary to that sequence are included in the meaning of "gene”.
- genes are single-stranded, double-stranded, or triple-stranded or more nucleotides, and the term "gene” also includes an association of a DNA strand and an RNA strand, a mixture of ribonucleotides (RNA) and deoxyribonucleotides (DNA) on a single nucleotide strand, and double-stranded or triple-stranded or more nucleotides containing such a nucleotide strand.
- the "CD37 gene” of the present invention can include, for example, DNA, mRNA, cDNA, cRNA, etc., containing a nucleotide sequence encoding the amino acid sequence of the CD37 protein.
- nucleotide refers to DNA, RNA, probes, oligonucleotides, polynucleotides, primers, etc. are also included in the meaning.
- nucleotides are single-stranded, double-stranded or three or more stranded nucleotides, and the meaning of "nucleotide” also includes an aggregate of a DNA strand and an RNA strand, a mixture of ribonucleotides (RNA) and deoxyribonucleotides (DNA) on a single nucleotide strand, and an aggregate of a double strand or three or more strands containing such a nucleotide strand.
- RNA ribonucleotides
- DNA deoxyribonucleotides
- polypeptide In the present invention, "polypeptide,” “peptide,” and “protein” are synonymous.
- protein refers to “protein” from any vertebrate source, including mammals such as primates (e.g., humans and monkeys) and rodents (e.g., mice and rats).
- the "full-length amino acid sequence of an antibody heavy chain” or the “full-length amino acid sequence of an antibody light chain” refers to the amino acid sequence of a protein obtained by transcription and translation (or translation) from nucleotides including a nucleotide sequence encoding an antibody heavy chain or an antibody light chain. These may include the amino acid sequence of a signal sequence, but the signal sequence may be cleaved when the antibody heavy chain and the antibody light chain are combined to form an antibody molecule.
- antigen may be used to mean “immunogen.”
- cells also include various cells derived from individual animals, subcultured cells, primary cultured cells, cell lines, recombinant cells, and microorganisms.
- the "site" to which an antibody binds refers to a partial peptide or partial higher-order structure on an antigen to which the antibody binds or recognizes. In the present invention, such a site is also called an epitope or an antibody binding site.
- sites on the CD37 protein to which the anti-CD37 antibody of the present invention binds or recognizes include partial peptides or partial higher-order structures on the CD37 protein.
- CDR Complementarity Determining Region
- FR Framework Region
- FRH1 to FRH4 The portion other than CDRH1 to CDRH3 in the heavy chain variable region amino acid sequence is called FR, and the portions from the amino terminal to just before CDRH1, from after CDRH1 to just before CDRH2, from after CDRH2 to just before CDRH3, and from after CDRH3 to the carboxyl terminal are called FRH1 to FRH4, respectively.
- the portions of the light chain variable region amino acid sequence other than CDRL1 to CDRL3 are also FR, and the portions from the amino terminus to just before CDRL1, from after CDRL1 to just before CDRL2, from after CDRL2 to just before CDRL3, and from after CDRL3 to the carboxyl terminus are called FRL1 to FRL4, respectively. That is, in the heavy and light chain variable regions (amino acid sequences), the portions are arranged continuously from the amino terminus to the carboxyl terminus in the order FRH1-CDRH1-FRH2-CDRH2-FRH3-CDRH3-FRH4 and FRL1-CDRL1-FRL2-CDRL2-FRL3-CDRL3-FRL4.
- antigen-binding fragment of an antibody refers to an antibody fragment that exhibits at least a part of the antigen-binding ability exhibited by the original antibody.
- antigen-binding fragment of an antibody include, but are not limited to, Fab, F(ab')2, scFv, Fab', single-chain immunoglobulin, etc.
- Such antigen-binding fragment of an antibody may be a recombinant protein produced in an appropriate host cell using a recombinant gene, in addition to those obtained by treating a full-length antibody protein molecule with an enzyme such as papain or pepsin.
- other drugs refers to drugs administered in combination with a specific antibody-drug conjugate.
- the specific antibody-drug conjugate in the present invention is preferably an anti-CD37 antibody-drug conjugate.
- the other drugs in the present invention are preferably one or more drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents.
- the term "pharmacologically acceptable salt” refers to a salt that is not significantly toxic and can be used as a pharmaceutical composition.
- Compounds having acidic substituents can be converted into salts by reacting them with bases.
- the salts include alkali metal salts such as sodium salts, potassium salts, and lithium salts; alkaline earth metal salts such as calcium salts and magnesium salts; metal salts such as aluminum salts and iron salts; inorganic salts such as ammonium salts; amine salts such as tert-butylamine salts, tert-octylamine salts, dibenzylamine salts, morpholine salts, glucosamine salts, phenylglycine alkyl ester salts, ethylenediamine salts, N-methylglucamine salts, guanidine salts, diethylamine salts, triethylamine salts, dicyclohexylamine salts, N,N'-di
- Compounds having basic substituents can be converted into salts by reacting with an acid.
- examples include, but are not limited to, inorganic acid salts such as hydrochloric acid, hydrobromic acid, hydroiodic acid, nitric acid, sulfuric acid, and phosphoric acid; organic carboxylates such as acetic acid, fumaric acid, maleic acid, succinic acid, citric acid, tartaric acid, adipic acid, lactic acid, and trifluoroacetic acid; organic sulfonates such as methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid, and naphthalenesulfonic acid; and amino acid salts such as glycine salts, lysine salts, arginine salts, ornithine salts, glutamic acid salts, and aspartic acid salts.
- inorganic acid salts such
- drugs and their pharmacologically acceptable salts used in the present invention may exist as solvates, and these solvates are also included in the other drugs and their pharmacologically acceptable salts used in the present invention.
- a "prodrug” is a derivative of the compound of the present invention that has a chemically or metabolically decomposable group and that, after administration to a living body, is restored to the original compound by, for example, hydrolysis, solvolysis, or decomposition under physiological conditions, thereby exhibiting the original medicinal effect, and also includes non-covalent complexes and salts.
- Prodrugs are used, for example, to improve absorption in oral administration or for targeting to a target site.
- modification sites include highly reactive functional groups in the compound of the present invention, such as hydroxyl groups, carboxy groups, and amino groups.
- cancer and “tumor” are used interchangeably.
- Cancer and “tumor” include malignant lymphoma.
- malignant lymphoma refers to a type of blood cancer (hematopoietic tumor) in which lymphocytes in white blood cells become cancerous.
- Malignant lymphomas are broadly classified into B cell lymphoma, T cell lymphoma/NK cell lymphoma, and Hodgkin's lymphoma.
- B cell lymphoma, T cell lymphoma, and NK cell lymphoma are sometimes collectively called non-Hodgkin's lymphoma.
- “several” means 1 to 10, 1 to 9, 1 to 8, 1 to 7, 1 to 6, 1 to 5, 1 to 4, 1 to 3, or 1 or 2.
- CD37 is a four-transmembrane protein belonging to the tetraspanin superfamily (Charrin S., et al., J Cell Sci., 3641-3648, 127, 2014). It is a membrane protein consisting of 281 amino acids, and both the amino and carboxyl terminal ends are located intracellularly. It can be referenced by accession numbers such as NM_001774 and NP_001765 (NCBI).
- the CD37 protein used in the present invention can be directly purified from CD37-expressing cells of humans or non-human mammals (rats, mice, monkeys, etc.) or can be prepared from a cell membrane fraction of the cells. It can also be obtained by synthesizing CD37 in vitro or by producing it in a host cell through genetic manipulation. Specifically, in genetic manipulation, the protein can be obtained by incorporating CD37 cDNA into an expression vector, synthesizing it in a solution containing enzymes, substrates, and energy substances necessary for transcription and translation, or by expressing CD37 by transforming other prokaryotic or eukaryotic host cells. It is also possible to use the above-mentioned genetically engineered CD37-expressing cells or cell lines expressing CD37 as the CD37 protein. It is also possible to directly administer an expression vector incorporating CD37 cDNA to an animal to express CD37 in the body of the animal to be immunized.
- CD37 also includes proteins that have an amino acid sequence in which one or more amino acids have been substituted, deleted, and/or added to the amino acid sequence of the CD37 protein and have biological activity equivalent to that of the protein.
- Human CD37 protein has the amino acid sequence set forth in SEQ ID NO: 18.
- the extracellular region of human CD37 protein is composed of extracellular domain 1 (also referred to herein as EC1) having the amino acid sequence of amino acids 39 to 59 of the amino acid sequence set forth in SEQ ID NO: 18, and extracellular domain 2 (also referred to herein as EC2) having the amino acid sequence of amino acids 112 to 241 of the amino acid sequence set forth in SEQ ID NO: 18.
- extracellular domain 1 also referred to herein as EC1
- extracellular domain 2 also referred to herein as EC2
- the sequence of human CD37 protein can also be found at the following link (https://www.uniprot.org/uniprot/P11049).
- Anti-CD37 Antibody (1) Antibody In the present invention, an antibody that binds to CD37 and an antibody that recognizes CD37 may both be referred to as an "anti-CD37 antibody” or abbreviated as "CD37 antibody”.
- the anti-CD37 antibody of the present invention may be derived from any species, but preferably includes human, rat, mouse, and rabbit. If derived from a species other than human, it is desirable to chimerize or humanize it using known techniques.
- the antibody of the present invention may be a polyclonal or monoclonal antibody, but is preferably a monoclonal antibody.
- the anti-CD37 antibody of the present invention is an antibody that can target tumor cells, i.e., it has the properties of being able to recognize tumor cells, being able to bind to tumor cells, and being taken up and internalized within tumor cells. Therefore, the anti-CD37 antibody of the present invention can be linked to a compound having anti-tumor activity via a linker to form an antibody-drug conjugate.
- the binding of antibodies to tumor cells can be confirmed using flow cytometry.
- the uptake of antibodies into tumor cells can be confirmed using (1) an assay in which an antibody taken up into the cells is visualized by a fluorescent microscope using a secondary antibody (fluorescently labeled) that binds to the therapeutic antibody (Cell Death and Differentiation (2008) 15, 751-761), (2) an assay in which a secondary antibody (fluorescently labeled) that binds to the therapeutic antibody is used to measure the amount of fluorescence taken up into the cells (Molecular Biology of the Cell Vol.
- a recombinant conjugate protein consisting of the catalytic domain of diphtheria toxin and protein G can also be used as an immunotoxin.
- high internalization ability means that the viability of CD37-expressing cells administered with the antibody and a saporin-labeled anti-rat IgG antibody is 80% or less (expressed as a relative rate assuming that the cell viability when no antibody is added is 100%), preferably 70% or less, and more preferably 60% or less.
- the antibody-drug conjugate of the present invention is bound to a compound that exerts an antitumor effect, so it is preferable, but not essential, that the antibody itself has an antitumor effect.
- the antibody For the purpose of exerting the cytotoxicity of the antitumor compound specifically and selectively in tumor cells, it is important and preferable that the antibody has the property of being internalized and transferred to tumor cells.
- Anti-CD37 antibodies can be obtained by immunizing animals with an antigenic polypeptide and collecting and purifying the antibodies produced in the body using methods used in this field.
- CD37 is a four-transmembrane protein, it is preferable to use CD37 that retains its three-dimensional structure as the antigen.
- One such method is DNA immunization.
- the origin of the antigen is not limited to humans, and animals can also be immunized with antigens derived from animals other than humans, such as mice and rats.
- antibodies that can be applied to human diseases can be selected by testing the cross-reactivity of the obtained antibodies that bind to the heterologous antigen with human antigens.
- a hybridoma can be established by fusing an antibody-producing cell that produces an antibody against an antigen with a myeloma cell, and a monoclonal antibody can be obtained.
- Antigens can be obtained by genetically engineering a gene encoding an antigen protein in a host cell to produce it. Specifically, a vector capable of expressing an antigen gene is prepared, introduced into a host cell to express the gene, and the expressed antigen is purified. Antibodies can also be obtained by immunizing an animal with the above-mentioned genetically engineered antigen-expressing cells or a cell line expressing the antigen.
- antibodies can be obtained without using an antigen protein by incorporating the cDNA of the antigen protein into an expression vector and administering it to an animal to be immunized, thereby expressing the antigen protein in the body of the animal to produce antibodies against the antigen protein.
- the anti-CD37 antibody used in the present invention is not particularly limited, but for example, an antibody specified by the amino acid sequence shown in the sequence listing of the present application can be preferably used.
- the anti-CD37 antibody used in the present invention preferably has the following characteristics: (i) an antibody characterized by the following properties: -Specifically binds to CD37. - It has the activity of being internalized into CD37-expressing cells by binding to CD37. (ii) The antibody described in (i) above, wherein CD37 is human CD37. (iii) The antibody according to (i) or (ii) above, which recognizes the higher-order structure of CD37.
- the method for obtaining the antibody against CD37 of the present invention is not particularly limited as long as it is possible to obtain an anti-CD37 antibody, but since CD37 is a transmembrane protein, it is preferable to use CD37 that retains its higher-order structure as an antigen.
- the DNA immunization method is a method in which an expression plasmid for an antigen is introduced into an individual animal such as a mouse or rat, and the antigen is expressed within the individual, thereby inducing immunity against the antigen.
- gene introduction including direct injection of the plasmid into the muscle, intravenous injection of an introduction reagent such as liposome or polyethyleneimine, a method using a viral vector, a method in which gold particles with a plasmid attached are shot with a gene gun, and a hydrodynamic method in which a large amount of plasmid solution is rapidly injected intravenously.
- a technique called in vivo electroporation is known as a method for improving the expression level, in which the plasmid is injected intramuscularly and then electroporation is performed at the same site (Aihara H, Miyazaki J. Nat Biotechnol. 1998 Sep; 16(9): 867-7 0 or Mir LM, Bureau MF, Gehl J, Rangara R, Rouy D, Caillaud JM, Delaere P, Branellec D, Schw artz B, Scherman D. Proc Natl Acad Sci U S A. 1999 Apr 13;96(8):4262-7. ).
- expression levels can be further improved by treating the muscle with hyaluronidase before intramuscular injection of the plasmid (McMahon JM1, Signori E, Wells KE, Fazio VM, Wells DJ. Gene Ther. 2001 Aug;8(16):1264-70).
- Hybridomas can be produced by known methods, for example, using the Hybridune Hybridoma Production System (Cyto Pulse Sciences).
- CD37 cDNA is incorporated into an expression vector, and the vector is directly administered to an animal to be immunized by electroporation, a gene gun, or the like, thereby expressing CD37 in the animal's body, thereby eliciting an immune response.
- the administration of the vector by electroporation or the like may be performed once or multiple times, preferably multiple times, if necessary to increase the antibody titer.
- tissue e.g., lymph nodes
- myeloma preparation of myeloma cells
- cell fusion between antibody-producing cells and myelomas screening for hybridomas producing the desired antibody
- division into single cell clones cloning
- culturing hybridomas for the mass production of monoclonal antibodies or raising animals implanted with hybridomas (h) Examination of the physiological activity (internalization activity) and binding specificity of the monoclonal antibody thus produced, or assay of its properties as a labeling reagent.
- the resulting monoclonal antibody has high antigen specificity for CD37.
- the monoclonal antibody is not particularly limited, but an example of the monoclonal antibody is the anti-CD37 mouse monoclonal antibody HH1 (Smeland E, et al., Scand J Immunol, 21(3), 205-214 (1985)).
- the antibody titer measurement method used in (a) may be, for example, flow cytometry or Cell-ELISA, but is not limited to these methods.
- steps (a) to (h) of the specific examples of obtaining a monoclonal antibody described in "3. Production of an anti-CD37 antibody” are performed again to obtain a monoclonal antibody separately and independently, or if a monoclonal antibody is obtained by another method, it is possible to obtain an antibody having a cytotoxic activity equivalent to that of the anti-CD37 antibody obtained in step (g).
- An example of such an antibody is an antibody that binds to the same epitope as the anti-CD37 antibody obtained in step (g).
- a newly produced monoclonal antibody binds to a partial peptide or partial three-dimensional structure to which the anti-CD37 antibody binds, it can be determined that the monoclonal antibody binds to the same epitope.
- the monoclonal antibody competes with the binding of the anti-CD37 antibody to CD37 (i.e., the monoclonal antibody prevents the binding of the anti-CD37 antibody to CD37)
- it can be determined that the monoclonal antibody binds to the same epitope as the anti-CD37 antibody, even if the sequence or structure of the specific epitope has not been determined. If it is confirmed that the epitopes are identical, it is highly expected that the monoclonal antibody will have antigen-binding ability or biological activity equivalent to that of the anti-CD37 antibody.
- the antibodies of the present invention also include genetically engineered antibodies that have been artificially modified for the purposes of reducing heterologous antigenicity against humans, improving the physical properties of antibody-drug conjugates, etc., such as chimeric antibodies, humanized antibodies, and human antibodies. These antibodies can be produced using known methods.
- Chimeric antibodies include antibodies whose variable and constant regions are heterologous, such as chimeric antibodies in which the variable region of a mouse or rat antibody is joined to a constant region of human origin (see Proc. Natl. Acad. Sci. U.S.A., 81, 6851-6855, (1984)).
- Humanized antibodies include antibodies in which only the CDRs have been incorporated into a human-derived antibody (see Nature (1986) 321, pp. 522-525), antibodies in which not only the CDR sequences but also some framework amino acid residues have been grafted onto a human antibody by CDR grafting (WO 90/07861), and antibodies in which the amino acid sequences of some of the CDRs have been altered while still maintaining the antigen-binding ability.
- humanized antibodies of anti-CD37 mouse monoclonal antibody HH1 include antibodies comprising the light chain variable region of hmAb-L11 and the heavy chain variable region of any of hmAb-H11, hmAb-H541, hmAb-H551, or hmAb-H11a.
- the full-length amino acid sequence of the light chain of hmAb-L11 is shown in SEQ ID NO:2, and the full-length amino acid sequences of the heavy chains of hmAb-H11, hmAb-H541, hmAb-H551, or hmAb-H11a are shown in SEQ ID NO:4, 6, 8, or 10, respectively.
- the light chain variable region consists of the sequence shown in amino acid numbers 21 to 128 of the full-length amino acid sequence of the light chain shown in SEQ ID NO:2, and the heavy chain variable region consists of the sequence shown in amino acid numbers 20 to 138 of the full-length amino acid sequence of the heavy chain shown in each SEQ ID NO.
- the antibody of the present invention includes an antibody comprising a light chain of hmAb-L11 and a heavy chain of any one of hmAb-H11, hmAb-H541, hmAb-H551, or hmAb-H11a.
- the amino acid sequence of the light chain of hmAb-L11 comprises the sequence shown in amino acid numbers 21 to 234 of the amino acid sequence of the full-length light chain of hmAb-L11 shown in SEQ ID NO:2, and the amino acid sequence of the heavy chain of hmAb-H11, hmAb-H541, hmAb-H551, or hmAb-H11a comprises the sequence shown in amino acid numbers 20 to 468 of the amino acid sequence of the full-length heavy chain of hmAb-H11, hmAb-H541, hmAb-H551, or hmAb-H11a shown in SEQ ID NO:4, 6, 8, or 10, respectively.
- humanized antibodies of the anti-CD37 mouse monoclonal antibody HH1 include hmAb-H11L11, hmAb-H541L11, hmAb-H551L11, and hmAb-H11aL11.
- the sequence consisting of amino acid residues 44 to 54 represents CDRL1
- the sequence consisting of amino acid residues 70 to 76 represents CDRL2
- the sequence consisting of amino acid residues 109 to 117 represents CDRL3.
- the sequence consisting of amino acid residues 45 to 54 (GYSFTDYNMY: SEQ ID NO:22) represents CDRH1
- the sequence consisting of amino acid residues 69 to 78 (YIDPYNGDTT: SEQ ID NO:23) represents CDRH2
- the sequence consisting of amino acid residues 118 to 127 (SPYGHYAMDY: SEQ ID NO:24) represents CDRH3.
- the CDR sequences described are based on the AbM definition (Handbook of Therapeutic Antibodies, Chapter 5, Bioinformatics Tools for Antibody Engineering, Andrew C. R. Martin, James Allen, 2007).
- amino acid substitutions are substitutions that occur within amino acid groups that are related to the amino acid side chains.
- antibodies that have biological activity equivalent to each of the above antibodies By combining sequences that show high homology with the above heavy chain amino acid sequences and light chain amino acid sequences, it is possible to select antibodies that have biological activity equivalent to each of the above antibodies. Such homology is generally 80% or more, preferably 85% or more, more preferably 90% or more, even more preferably 95% or more, and most preferably 99% or more. It is also possible to select antibodies that have biological activity equivalent to each of the above antibodies by combining amino acid sequences in which one or several amino acid residues have been substituted, deleted, or added to the heavy chain or light chain amino acid sequences.
- the BLAST ratio can be determined by using the default parameters of the BLAST algorithm (see Lipman (1997), "Gapped BLAST and PSI-BLAST: a new generation of protein database search programs", Nucleic Acids Res. 25:3389-3402).
- the Blast algorithm can also be used by accessing the Internet at www.ncbi.nlm.nih.gov/blast.
- the amino acid sequence consisting of amino acid residues 1 to 20 is a signal sequence
- the amino acid sequence consisting of amino acid residues 21 to 128 is a variable region
- the amino acid sequence consisting of amino acid residues 129 to 234 is a constant region.
- the sequence of SEQ ID NO:2 is shown in Figure 2.
- amino acid sequence consisting of amino acid residues 1 to 19 is a signal sequence
- amino acid sequence consisting of amino acid residues 20 to 138 is a variable region
- amino acid sequence consisting of amino acid residues 139 to 468 is a constant region.
- the sequence of SEQ ID NO: 4, 6, 8 or 10 is shown in Figure 4, 6, 8 or 10.
- Antibodies of the present invention further include human antibodies that bind to CD37.
- An anti-CD37 human antibody means a human antibody that has only the gene sequence of an antibody derived from a human chromosome.
- An anti-CD37 human antibody can be produced by a method using a human antibody-producing mouse that has a human chromosome fragment containing the heavy and light chain genes of a human antibody (Tomizuka, K. et al., Nature Genetics (1997) 16, pp. 133-143,; Kuroiwa, Y. et al., Nucl. Acids Res. (1998) 26, pp. 3447-3448; Yoshida, H. et al., Animal Cell Technolo gy: Basic and Applied Aspects vol.
- Such human antibody-producing mice can be produced by producing knockout animals and transgenic animals, which are genetically modified animals in which the endogenous immunoglobulin heavy and light chain gene loci have been destroyed and instead the human immunoglobulin heavy and light chain gene loci have been introduced via yeast artificial chromosome (YAC) vectors or the like, and by crossing these animals together.
- knockout animals and transgenic animals which are genetically modified animals in which the endogenous immunoglobulin heavy and light chain gene loci have been destroyed and instead the human immunoglobulin heavy and light chain gene loci have been introduced via yeast artificial chromosome (YAC) vectors or the like, and by crossing these animals together.
- YAC yeast artificial chromosome
- eukaryotic cells can be transformed with cDNAs encoding the heavy and light chains of such human antibodies, preferably with a vector containing said cDNAs, and the transformed cells that produce recombinant human monoclonal antibodies can be cultured to obtain the antibodies from the culture supernatant.
- the host may be, for example, a eukaryotic cell, preferably a mammalian cell such as a CHO cell, lymphocyte, or myeloma cell.
- a mammalian cell such as a CHO cell, lymphocyte, or myeloma cell.
- the phage display method (Nature Biotechnology (2005), 23, (9), pp. 1105-1116) can be used, in which the variable region of a human antibody is expressed on the surface of a phage as a single-chain antibody (scFv) and phages that bind to the antigen are selected.
- scFv single-chain antibody
- an expression vector containing that sequence can be prepared and introduced into an appropriate host for expression to obtain a human antibody (WO 92/01047, WO 92/20791, WO 93/06213, WO 93/11236, WO 93/19172, WO 95/01438, WO 95/15388, Annu. Rev. Immunol (1994) 12, p. 433-455, Nature Biotechnology (2005) 23 (9), p. 1105-1116).
- a newly created human antibody binds to a partial peptide or partial three-dimensional structure to which the anti-CD37 antibody described herein binds, it can be determined that the human antibody binds to the same epitope. Furthermore, by confirming that the human antibody competes with the binding of the anti-CD37 antibody described herein to CD37 (i.e., the human antibody prevents the binding of the anti-CD37 antibody described herein to CD37), it can be determined that the human antibody binds to the same epitope as the anti-CD37 antibody described herein, even if the specific epitope sequence or structure has not been determined. If it is confirmed that the epitopes are the same, it is strongly expected that the human antibody has antigen-binding ability or biological activity equivalent to that of the anti-CD37 antibody described herein.
- the chimeric, humanized, or human antibodies obtained by the above methods can be evaluated for their binding to antigens by known methods, and suitable antibodies can be selected.
- DSC Differential scanning calorimetry
- Tm thermal denaturation midpoint
- the antibody of the present invention also includes modified antibodies.
- the modified antibody means an antibody of the present invention that has been chemically or biologically modified. Chemical modifications include the attachment of a chemical moiety to the amino acid backbone, chemical modifications of N- or O-linked carbohydrate chains, and the like. Biological modifications include those that have been post-translationally modified (e.g., N- or O-linked glycosylation, amino- or carboxyl-terminal processing, deamidation, aspartic acid isomerization, methionine oxidation, tryptophan oxidation), and those that have been expressed using a prokaryotic host cell to add a methionine residue to the amino terminus.
- chemical modifications include the attachment of a chemical moiety to the amino acid backbone, chemical modifications of N- or O-linked carbohydrate chains, and the like.
- Biological modifications include those that have been post-translationally modified (e.g., N- or O-linked glycosylation, amino- or carboxyl-terminal processing, de
- modified antibodies of the present invention are useful for improving the stability and blood retention of the antibody, reducing antigenicity, and detecting or isolating the antibody or antigen, and the like.
- antibody-dependent cellular cytotoxicity can be enhanced by adjusting the sugar chain modification bound to the antibody of the present invention (glycosylation, defucosylation, etc.).
- Techniques for adjusting the sugar chain modification of antibodies are known, including, but not limited to, those disclosed in International Publication Nos. 1999/54342, 2000/61739, 2002/31140, 2007/133855, and 2013/120066.
- the antibodies of the present invention also include antibodies in which the sugar chain modification has been adjusted.
- an antibody gene is isolated and then introduced into a suitable host to produce an antibody, a suitable combination of a host and an expression vector can be used.
- a specific example of an antibody gene is a combination of a gene encoding the heavy chain sequence and a gene encoding the light chain sequence of an antibody described herein.
- the heavy chain sequence gene and the light chain sequence gene can be inserted into the same expression vector, or can be inserted into separate expression vectors.
- the light chain sequence gene comprises the nucleotide sequence shown in SEQ ID NO: 1.
- the sequence of SEQ ID NO: 1 is depicted in FIG. 1.
- the heavy chain sequence gene comprises the nucleotide sequence shown in SEQ ID NO: 3, 5, 7 or 9.
- the sequence of SEQ ID NO: 3, 5, 7 or 9 is shown in Figure 3, 5, 7 or 9.
- the light chain sequence gene has the nucleotide sequence shown in SEQ ID NO: 1, and the heavy chain sequence gene comprises the nucleotide sequence shown in SEQ ID NO: 3, 5, 7, or 9. That is, it is particularly preferred that the antibody gene of the present invention is any one of the following (i) to (iv): (i) an antibody gene, wherein the light chain sequence gene has the nucleotide sequence shown in SEQ ID NO:1 and the heavy chain sequence gene comprises the nucleotide sequence shown in SEQ ID NO:3; (ii) an antibody gene, wherein the light chain sequence gene has the nucleotide sequence shown in SEQ ID NO:1 and the heavy chain sequence gene comprises the nucleotide sequence shown in SEQ ID NO:5; (iii) an antibody gene, wherein the light chain sequence gene has the nucleotide sequence shown in SEQ ID NO:1 and the heavy chain sequence gene comprises the nucleotide sequence shown in SEQ ID NO:7; or
- animal cells When eukaryotic cells are used as hosts, animal cells, plant cells, and eukaryotic microorganisms can be used.
- animal cells include mammalian cells, such as monkey cells, COS cells (Gluzman, Y. Cell (1981) 23, p. 175-182, ATCC CRL-1650), mouse fibroblast cells NIH3T3 (ATCC No. CRL-1658), dihydrofolate reductase-deficient strains of Chinese hamster ovary cells (CHO cells, ATCC CCL-61) (Urlaub, G. and Chasin, L.A. Proc. Natl. Acad. Sci. U.S.A. (1980) 77, p. 4126-4220), and FreeStyle 293F cells (Invitrogen).
- mammalian cells such as monkey cells, COS cells (Gluzman, Y. Cell (1981) 23, p. 175-182, ATCC CRL-1650), mouse fibroblast cells NIH3T3 (ATCC
- examples include Escherichia coli and Bacillus subtilis.
- Antibodies can be obtained by introducing the desired antibody gene into these cells by transformation and culturing the transformed cells in vitro.
- the yield may vary depending on the antibody sequence, and it is possible to select antibodies that are easy to produce as a pharmaceutical using the yield as an indicator from among antibodies with equivalent binding activity. Therefore, the antibodies of the present invention also include antibodies obtained by a production method for the antibody, which is characterized by including a step of culturing the transformed host cells described above, and a step of collecting the desired antibody or an antigen-binding fragment of the antibody from the culture obtained in this step.
- the antibody according to the present invention includes the modified antibody and the antigen-binding fragment of the antibody, and also includes a deletion in which one or two amino acids are deleted at the carboxyl terminus of the heavy chain, and an amidated deletion (for example, a heavy chain in which the proline residue at the carboxyl terminus is amidated).
- an amidated deletion for example, a heavy chain in which the proline residue at the carboxyl terminus is amidated.
- the deletion at the carboxyl terminus of the heavy chain of the antibody according to the present invention is not limited to the above types.
- the two heavy chains constituting the antibody according to the present invention may be any one of the heavy chains selected from the group consisting of full-length and the above deletions, or a combination of two of them.
- the ratio of the amounts of each deletion may be affected by the type and culture conditions of the cultured mammalian cells that produce the antibody according to the present invention, but the main component of the antibody according to the present invention may be a case in which one amino acid residue is deleted at the carboxyl terminus in both of the two heavy chains.
- the isotype of the antibody of the present invention can be, for example, IgG (IgG1, IgG2, IgG3, IgG4), etc., with IgG1 or IgG2 being preferred.
- the biological activities of an antibody generally include antigen-binding activity, activity of internalizing the antibody into cells expressing the antigen by binding to the antigen, activity of neutralizing antigen activity, activity of enhancing antigen activity, antibody-dependent cellular cytotoxicity (ADCC) activity, complement-dependent cytotoxicity (CDC) activity, and antibody-dependent cell-mediated phagocytosis (ADCP).
- the function of the antibody according to the present invention is binding activity to CD37, and preferably activity of internalizing the antibody into cells expressing CD37 by binding to CD37.
- the antibody according to the present invention may have ADCC activity, CDC activity, and/or ADCP activity in addition to the cell-internalizing activity.
- the obtained antibodies can be purified to homogeneity.
- the separation and purification of antibodies can be performed using the separation and purification methods used for normal proteins.
- the antibodies can be separated and purified by appropriately selecting and combining column chromatography, filter filtration, ultrafiltration, salting out, dialysis, preparative polyacrylamide gel electrophoresis, isoelectric focusing, etc. (Strategies for Protein Purification and Characterization: A Laboratory Course Manual, Da Examples of such antibodies include, but are not limited to, Niel R. Marshak et al. eds., Cold Spring Harbor Laboratory Press (1996); Antibodies: A Laboratory Manual. Ed Harlow and David Lane, Cold Spring Harbor Laboratory (1988).
- chromatography examples include affinity chromatography, ion exchange chromatography, hydrophobic chromatography, gel filtration chromatography, reverse phase chromatography, and adsorption chromatography.
- Columns used in affinity chromatography include protein A columns and protein G columns.
- columns using protein A columns include Hyper D, POROS, and Sepharose F. F. (Pharmacia).
- Anti-CD37 Antibody-Drug Conjugate The anti-CD37 antibody-drug conjugate used in the present invention has the following formula:
- the anti-CD37 antibody-drug conjugate is an anti-CD37 antibody-drug conjugate in which a drug linker represented by the formula:
- the partial structure of the anti-CD37 antibody-drug conjugate consisting of a linker and a drug is referred to as the "drug linker.”
- This drug linker is bonded to a thiol group (in other words, the sulfur atom of a cysteine residue) generated at the disulfide bond site between the antibody chains (two sites between the heavy chains and the heavy chains, and two sites between the heavy chains and the light chains).
- the drug linker of the present invention is composed of the topoisomerase I inhibitor exatecan (IUPAC name: (1S,9S)-1-amino-9-ethyl-5-fluoro-1,2,3,9,12,15-hexahydro-9-hydroxy-4-methyl-10H,13H-benzo[de]pyrano[3',4':6,7]indolizino[1,2-b]quinoline-10,13-dione, (chemical name: (1S,9S)-1-amino-9-ethyl-5-fluoro-2,3-dihydro-9-hydroxy-4-methyl-1H,12H-benzo[de]pyrano[3',4':6,7]indolizino[1,2-b]quinoline-10,13(9H,15H)-dione)).
- Exatecan has the following formula:
- camptothecin derivative with antitumor effects represented by the formula:
- the anti-CD37 antibody-drug conjugate used in the present invention can also be represented by the following formula:
- n is synonymous with the so-called average drug binding number (DAR; Drug-to-Antibody Ratio) and indicates the average number of drug linkers bound per antibody.
- DAR Drug-to-Antibody Ratio
- the anti-CD37 antibody-drug conjugate used in the present invention is cleaved from the linker after being transferred into the cancer cell, and is converted to the following formula:
- the above compound is considered to be the main component of the antitumor activity of the anti-CD37 antibody-drug conjugate used in the present invention, and has been confirmed to have a topoisomerase I inhibitory effect (Ogitani Y. et al., Clinical Cancer Research, 2016, Oct 15; 22 (20): 5097-5108, Epub 2016 Mar 29).
- the drug linker of the anti-CD37 antibody-drug conjugate used in the present invention is also known to have a bystander antitumor effect (Ogitani Y. et al., Cancer Science (2016) 107, 1039-1046).
- This bystander antitumor effect is achieved when the anti-CD37 antibody-drug conjugate used in the present invention is internalized in target-expressing cancer cells, and the compound is then released to exert an antitumor effect on nearby cancer cells that do not express the target.
- This bystander antitumor effect is also exhibited as an excellent antitumor effect when the anti-CD37 antibody-drug conjugate of the present invention is used in combination with other drugs.
- the anti-CD37 antibody obtained in the above "3. Production of anti-CD37 antibody” can be made into an anti-CD37 antibody-drug conjugate by binding a drug via a linker structure portion.
- the drug there is no particular limitation on the drug as long as it has a substituent or partial structure that can be bound to the linker structure.
- the anti-CD37 antibody-drug conjugate can be used for various purposes depending on the drug to be bound. Examples of such drugs include substances having antitumor activity, substances having an effect on blood diseases, substances having an effect on autoimmune diseases, anti-inflammatory substances, antibacterial substances, antifungal substances, antiparasitic substances, antiviral substances, antianesthetic substances, etc.
- an antitumor compound as a compound bound to the anti-CD37 antibody-drug conjugate of the present invention is described below.
- the antitumor compound there are no particular limitations on the antitumor compound, so long as it is a compound that has an antitumor effect and has a substituent or partial structure that can be bound to a linker structure.
- the linker In the antitumor compound, a part or all of the linker is cleaved in tumor cells, liberating the antitumor compound portion and exerting the antitumor effect.
- the linker is cleaved at the binding portion with the drug, the antitumor compound is liberated in its original structure, and its original antitumor effect is exerted.
- an antitumor compound that can be used in the present invention is the camptothecin derivative exatecan ((1S,9S)-1-amino-9-ethyl-5-fluoro-2,3-dihydro-9-hydroxy-4-methyl-1H,12H-benzo[de]pyrano[3',4':6,7]indolizino[1,2-b]quinoline-10,13(9H,15H)-dione; formula:)
- exatecan may be released into tumor cells with part of the linker still bound, but even in such a state, it is a compound that exhibits excellent antitumor effects.
- exatecan has a camptothecin structure
- an acidic aqueous medium e.g., at about pH 3
- the equilibrium is biased toward a structure in which a lactone ring is formed (closed ring form)
- a basic aqueous medium e.g., at about pH 10
- the equilibrium is biased toward a structure in which the lactone ring is opened (open ring form).
- Drug conjugates in which exatecan residues corresponding to such closed and open ring structures are introduced are expected to have the same antitumor effect, and conjugates in which exatecan groups corresponding to either structure are introduced are within the scope of the present invention.
- antitumor compounds include, for example, antitumor compounds described in the literature (Pharmacological Reviews, 68, p3-19, 2016), such as auristatins (Auristatins) such as doxorubicin, calchemicin, dorastatin 10, monomethyl auristatin E (MMAE), monomethyl auristatin F (MMAF), and maytansinoids (Maytansinoids) such as DM1 and DM4.
- auristatins such as doxorubicin, calchemicin, dorastatin 10, monomethyl auristatin E (MMAE), monomethyl auristatin F (MMAF)
- maytansinoids Maytansinoids
- pyrrolobenzodiazepine dimer SG2000 SJG-136
- camptothecin derivatives SN-38 duocarmycins such as CC-1065, amanitin, daunorubicin, mitomycin C, bleomycin, cyclocytidine, vincristine, vinblastine, methotrexate, platinum-based antitumor agents (cisplatin or its derivatives), taxol or its derivatives, etc.
- the number of drugs bound to one antibody molecule is an important factor that affects the efficacy and safety.
- Antibody-drug conjugates are produced by specifying reaction conditions such as the amounts of raw materials and reagents used to react so that the number of drugs bound is a certain number, but unlike chemical reactions of low molecular weight compounds, they are usually obtained as a mixture of different numbers of drugs bound.
- the number of drugs bound to one antibody molecule is specified and expressed as an average value, that is, the average number of drugs bound.
- the number of drugs bound means the average value.
- the number of exatecans bound to an antibody molecule can be controlled, and the average number of drugs bound to one antibody can be about 1 to 10, but is preferably 2 to 8, more preferably 5 to 8, even more preferably 7 to 8, and even more preferably about 8 or 8.
- a person skilled in the art would be able to design a reaction for binding the required number of drugs to an antibody based on the description of the examples in this application, and obtain an antibody-drug conjugate in which the number of exatecans bound is controlled.
- the linker structure that binds the anti-CD37 antibody and the drug is not particularly limited as long as it can be used as an antibody-drug conjugate, and can be appropriately selected and used depending on the purpose of use.
- linker structures include linkers described in publicly known literature (Pharmacol Rev 68:3-19, January 2016, Protein Cell DOI 10.1007/s13238-016-0323-0, etc.), and more specific examples include VC (valine-citrulline), MC (maleimidocaproyl), SMCC (succinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxylate), and SMCC (succinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxylate).
- VC valine-citrulline
- MC maleimidocaproyl
- SMCC succinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxylate
- SMCC succinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxylate
- N-maleimidomethyl) cyclohexane-1-carboxylate SPP (N-succinimidyl 4-(2-pyridyldithio) pentanoate, SS (disulfide), SPDB (N-succinimidyl 4-(2-pyridyldithio) butyrate), SS/hydrazone, hydrazone, carbonate.
- linker structures described in U.S. Patent Publication 2016/0297890 for example, those described in paragraphs [0260] to [0289] of said publication
- those having the following structure can be preferably used.
- the left end of the structure shown below is the binding site with the antibody, and the right end is the binding site with the drug.
- GGFG in the following linker structure represents an amino acid sequence linked by a peptide bond consisting of glycine-glycine-phenylalanine-glycine (GGFG).
- “-(Succinimid-3-yl-N)-” is represented by the following formula:
- Fig. 1 The structure shown in Fig. 1 is shown in Fig. 2.
- Position 3 of this partial structure is the binding site for the anti-CD37 antibody.
- the binding to the antibody at position 3 is characterized by forming a thioether bond.
- the nitrogen atom at position 1 of this structural portion bonds to the carbon atom of a methylene group present in the linker containing this structure.
- the drug-linker structure moiety having the following structure is preferably bound to the antibody.
- the average number of these drug-linker structures bound to one antibody may be 1 to 10, preferably 2 to 8, more preferably 5 to 8, even more preferably 7 to 8, and even more preferably about 8 or 8.
- This structure represents the group that is generated when one hydrogen atom is removed from the amino group at position 1 of exatecan.
- AB represents an antibody having a sulfhydryl group.
- L1 is -(Succinimid-3-yl-N)- structure.
- L 1 ' represents a maleimidyl group represented by the following formula:
- the antibody-drug conjugate (1) is described as a structure in which one structural portion from the drug to the linker end is bound to one antibody, but this is a description for convenience of explanation, and in reality, multiple structural portions are often bound to one antibody molecule. This situation is also the same in the explanation of the manufacturing method below.
- the antibody-drug conjugate (1) can be produced by reacting a compound (2) that can be obtained by a known method (for example, the method described in U.S. Patent Publication No. 2016/297890 (for example, the method described in paragraphs [0336] to [0374])) with an antibody having a sulfhydryl group.
- Antibodies having sulfhydryl groups can be obtained by methods well known to those skilled in the art (Hermanson, G.T., Bioconjugate Techniques, pp.56-136, pp.456-493, Academic Press (1996)).
- methods that can be used include, but are not limited to, reacting Traut's reagent with the amino groups of the antibody; reacting N-succinimidyl S-acetylthioalkanoates with the amino groups of the antibody, followed by hydroxylamine; reacting N-succinimidyl 3-(pyridyldithio)propionate, followed by a reducing agent; reacting the antibody with a reducing agent such as dithiothreitol, 2-mercaptoethanol, or tris(2-carboxyethyl)phosphine hydrochloride (TCEP) to reduce the disulfide bonds between the intra-chain portions of the antibody and generate sulfhydryl groups; etc.
- TCEP
- an antibody in which the intra-chain disulfides of the antibody have been partially or completely reduced can be obtained by using TCEP as a reducing agent in an amount of 0.3 to 3 molar equivalents per intra-chain disulfide of the antibody and reacting it with the antibody in a buffer containing a chelating agent.
- chelating agents include ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaacetic acid (DTPA). These can be used at a concentration of 1 mM to 20 mM.
- EDTA ethylenediaminetetraacetic acid
- DTPA diethylenetriaminepentaacetic acid
- As the buffer a solution of sodium phosphate, sodium borate, sodium acetate, etc. can be used.
- an antibody having a partially or completely reduced sulfhydryl group can be obtained by reacting the antibody with TCEP at 4°C to 37°C for 1 hour to 4 hours.
- a reaction is carried out to add the sulfhydryl group to the drug-linker moiety, and the drug-linker moiety can be linked by a thioether bond.
- 2 to 20 molar equivalents of compound (2) per antibody having a sulfhydryl group can be used to produce an antibody-drug conjugate (1) in which 2 to 8 drugs are bound per antibody.
- a solution in which compound (2) is dissolved can be added to a buffer solution containing an antibody having a sulfhydryl group and reacted.
- a sodium acetate solution, sodium phosphate, sodium borate, or the like can be used as the buffer solution.
- the pH during the reaction is 5 to 9, and more preferably, the reaction is performed at around pH 7.
- organic solvents such as dimethyl sulfoxide (DMSO), dimethylformamide (DMF), dimethylacetamide (DMA), and N-methyl-2-pyridone (NMP) can be used.
- DMSO dimethyl sulfoxide
- DMF dimethylformamide
- DMA dimethylacetamide
- NMP N-methyl-2-pyridone
- the organic solvent solution in which compound (2) is dissolved can be added to a buffer solution containing an antibody having a sulfhydryl group at 1 to 20% v/v and reacted.
- the reaction temperature is 0°C to 37°C, more preferably 10°C to 25°C, and the reaction time is 0.5 to 2 hours.
- the reaction can be terminated by deactivating the reactivity of unreacted compound (2) with a thiol-containing reagent.
- the thiol-containing reagent is, for example, cysteine or N-acetyl-L-cysteine (NAC). More specifically, the reaction can be terminated by adding 1 to 2 molar equivalents of NAC relative to the compound (2) used and incubating at room temperature for 10 to 30 minutes.
- NAC N-acetyl-L-cysteine
- the produced antibody-drug conjugate (1) can be subjected to concentration, buffer exchange, purification, and measurement of the antibody concentration and the average number of drugs bound per antibody molecule by the following common procedures, thereby identifying the antibody-drug conjugate (1).
- This gel filtration purification procedure is repeated two or three times in total to obtain an antibody-drug conjugate from which unbound drug linkers and low molecular weight compounds (tris(2-carboxyethyl)phosphine hydrochloride (TCEP), N-acetyl-L-cysteine (NAC), dimethyl sulfoxide) have been removed.
- TCEP tris(2-carboxyethyl)phosphine hydrochloride
- NAC N-acetyl-L-cysteine
- dimethyl sulfoxide dimethyl sulfoxide
- a 280 indicates the absorbance of the antibody-drug conjugate aqueous solution at 280 nm
- a 370 indicates the absorbance of the antibody-drug conjugate aqueous solution at 370 nm
- a A,280 indicates the absorbance of the antibody at 280 nm
- a A,370 indicates the absorbance of the antibody at 370 nm
- a D,280 indicates the absorbance of the conjugate precursor at 280 nm
- a D,370 indicates the absorbance of the conjugate precursor at 370 nm
- ⁇ A,280 indicates the molar absorption coefficient of the antibody at 280 nm
- ⁇ A,370 indicates the molar absorption coefficient of the antibody at 370 nm
- ⁇ D,280 indicates the molar absorption coefficient of the conjugate precursor at 280 nm
- ⁇ D,370 indicates the molar absorption coefficient of the conjugate precursor at 370 nm
- C A indicates the antibody concentration in the antibody-drug conjugate
- C D
- ⁇ A,280, ⁇ A,370, ⁇ D,280, and ⁇ D,370 are values (calculated estimated values or measured values obtained from UV measurement of a compound) prepared in advance.
- ⁇ A,280 can be estimated from the amino acid sequence of an antibody by a known calculation method (Protein Science, 1995, vol. 4, 2411-2423).
- ⁇ A,370 is usually zero.
- the A280 and A370 of the antibody-drug conjugate aqueous solution are measured, and these values are substituted into equations (1) and (2) to solve the simultaneous equations, thereby determining CA and CD . Furthermore, the average number of drugs bound per antibody can be determined by dividing CD by CA.
- HPLC analysis HPLC analysis is carried out under the following measurement conditions.
- HPLC system Agilent 1290 HPLC system (Agilent Technologies) Detector: ultraviolet spectrophotometer (measurement wavelength: 280 nm)
- Mobile phase B 0.075% TFA, 15% 2-propanol in acetonitrile
- Gradient program 14%-36% (0 min-15 min), 36%-80% (15 min-17 min), 80%-14% (17 min-17.01 min), 14% (17.01 min-25 min)
- Sample injection volume 10 ⁇ L
- the light chain (light chain with i drugs bound: L i ) and heavy chain (heavy chain with i drugs bound: H i ) bound to drugs are hydrophobic and have a longer retention time in proportion to the number of drugs bound, and are eluted in the order of, for example, L0, L1, H0, H1, H2, and H3.
- the detection peak can be assigned to any of L0, L1, H0, H1, H2, and H3.
- the number of drugs bound can be defined by a person skilled in the art, but is preferably L0, L1, H0, H1, H2, and H3.
- the peak area value is corrected according to the number of drug linkers bonded, using the molar extinction coefficients of the light chain, heavy chain, and drug linker according to the formula below.
- the molar absorption coefficients (280 nm) of the light and heavy chains of each antibody can be estimated from the amino acid sequences of the light and heavy chains of each antibody using a known calculation method (Protein Science, 1995, vol. 4, 2411-2423). In the case of H01L02, the molar absorption coefficient of the light chain was estimated to be 31710 and the molar absorption coefficient of the heavy chain was estimated to be 79990 according to the amino acid sequence.
- the molar absorption coefficient (280 nm) of the drug linker was the actual molar absorption coefficient (280 nm) of a compound in which each drug linker was reacted with mercaptoethanol or N-acetylcysteine and the maleimide group was converted to succinimide thioether.
- the wavelength at which absorbance is measured can be set appropriately by a person skilled in the art, but is preferably a wavelength at which the peak of the antibody can be measured, and more preferably 280 nm.
- F-3-3 Calculate the ratio (%) of each chain peak area to the total peak area correction value according to the formula below.
- F-3-4 Calculate the average number of drugs bound per antibody molecule in the antibody-drug conjugate according to the following formula.
- Average number of bound drugs ( L0 peak area ratio x 0 + L1 peak area ratio x 1 + H0 peak area ratio x 0 + H1 peak area ratio x 1 + H2 peak area ratio x 2 + H3 peak area ratio x 3) / 100 x 2
- multiple antibody-drug conjugates produced under similar conditions and having similar average drug binding numbers e.g., about ⁇ 1 can be mixed to make a new lot. In this case, the average drug binding number falls within the range of the average drug binding numbers before mixing.
- antibody-drug conjugate of the present invention is the following formula:
- Examples include those having the structure shown below.
- AB represents the anti-CD37 antibody disclosed herein, which is bound to the binding linker via a sulfhydryl group derived from the antibody.
- n is synonymous with the so-called DAR (Drug-to-Antibody Ratio) and represents the drug-antibody ratio per antibody. In other words, it represents the number of drugs bound to one antibody molecule, which is a value specified and expressed as the average value, i.e., the average number of drugs bound.
- n may be 2 to 8, preferably 5 to 8, more preferably 7 to 8, and even more preferably 8 or about 8, as measured by common procedure F.
- the number of drugs or attached drug linkers per antibody molecule in the anti-CD37 antibody-drug conjugate used in the present invention is preferably an integer in the range of 2 to 8, more preferably 2, 4, 6 or 8, and even more preferably 8.
- an example of the antibody-drug conjugate of the present invention is an antibody-drug conjugate or a pharmacologically acceptable salt thereof, in which the antibody represented by AB in the structure represented by the above formula (a) or (b) comprises an antibody having a heavy chain and a light chain, or an antigen-binding fragment thereof, selected from the group consisting of the following (a) to (e): (a) an antibody comprising a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2 and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full-length heavy chain amino acid sequence shown in SEQ ID NO: 4; (b) an antibody comprising a light chain consisting of the amino acid sequence of the 21st to 234th positions of the full-length light chain amino acid sequence shown in SEQ ID NO: 2 and a heavy chain consisting of the amino acid sequence of the 20th to 468th positions of the full
- anti-CD37 antibody-drug conjugates used in the present invention are known in the art.
- examples of such anti-CD37 antibody-drug conjugates include, but are not limited to, those in which an anti-tumor compound or a radionuclide is bound to an anti-CD37 antibody via a linker structure moiety, such as naratuximab emtansine (IMGN529), AGS67E, and 177 Lu-satetraxetan-lilotomab (Betalutin).
- IMGN529 naratuximab emtansine
- Betalutin Lu-satetraxetan-lilotomab
- Anti-CD37 antibody-drug conjugates are also described in WO 2011/112978, U.S. Pat. No. 8,765,917, WO 2015/017552, U.S. Pat. No. 9,925,273, WO 2013/088363 and U.S. Patent Application Publication No
- molecularly targeted drugs refers to drugs that act on specific molecules in cancer cells and exert anti-cancer effects. Molecularly targeted drugs are classified according to their mechanism of action, and examples of molecularly targeted drugs that can be used as other drugs in the present invention include antibodies, BCL-2 inhibitors, BTK inhibitors, etc.
- the antibodies used as other drugs are not particularly limited, but examples include polyclonal antibodies, monoclonal antibodies, and antigen-binding fragments of the antibodies, and preferably anti-CD20 antibodies and anti-CD19 antibodies, which are monoclonal antibodies.
- the terms "anti-CD20 antibody,” “CD20 antibody,” or “antibody that binds to CD20” refer to an antibody capable of binding to CD20 with sufficient affinity.
- the anti-CD20 antibody in the present invention is not particularly limited as long as it is a drug having the above-mentioned properties, and examples thereof include rituximab, ofatumumab, ocrelizumab, veltuzumab, obinutuzumab, AME-133v (LY 2469298), ocaratuzumab, PRO131921, tositumomab, ibritumomab-tiuxetan, BLX-301, and PRO70769 (described in WO2004/056312), and preferably rituximab or obinutuzumab.
- prodrugs of the above drugs that are converted into the above drugs in vivo are also included in the anti-CD20 antibodies of the present invention.
- the property of the anti-CD37 antibody-drug conjugate being taken up and internalized into tumor cells i.e., the internalization rate
- the mechanism of action of the enhanced efficacy of the combination is thought to be due to an increase in the internalization rate of the anti-CD37 antibody-drug conjugate into tumor cells.
- the increase or decrease in the internalization rate can be confirmed, for example, by the experiment described in the next paragraph, and in the examples of the present invention, the experiment described in Example 4 confirmed that the internalization rate of the anti-CD37 antibody-drug conjugate into tumor cells is significantly increased by combination with rituximab.
- the internalization rate of the anti-CD37 antibody-drug conjugate into tumor cells is increased by combination with obinutuzumab, and the efficacy is enhanced by administering the anti-CD37 antibody-drug conjugate in combination with obinutuzumab.
- the fluorescently labeled anti-CD37 antibody-drug conjugate of the present invention and an anti-CD20 antibody or an antibody that does not change the internalization rate are added to tumor cells at appropriate concentrations.
- an antibody-drug conjugate made from human IgG1 that recognizes an antigen unrelated to CD37 and the anti-CD20 antibody or an antibody that does not increase the internalization rate are added to tumor cells at appropriate concentrations. After culturing at 4°C for 1 hour and at 37°C for 1 to 6 hours, respectively, the cells are washed and a buffer solution or an anti-FITC monoclonal antibody is added.
- the terms "anti-CD19 antibody”, “CD19 antibody” or “antibody that binds to CD19” refer to an antibody that has the ability to bind to CD19 with sufficient affinity.
- the anti-CD19 antibody in the present invention is not particularly limited as long as it is a drug having the above properties, but examples include tafasitamab and inebilizumab, and preferably tafasitamab.
- prodrugs of the above drugs that are converted into the above drugs in the body are also included in the anti-CD19 antibodies of the present invention.
- BCL-2 inhibitor refers to an agent that inhibits B-cell lymphoma-2 (BCL-2), an apoptosis-suppressing protein.
- BCL-2 B-cell lymphoma-2
- the BCL-2 inhibitor in the present invention may have an effect of inhibiting proteins other than BCL-2.
- the BCL-2 inhibitor in the present invention is not particularly limited as long as it is a drug having the above-mentioned properties, and examples thereof include venetoclax, 4-[4-[[2-(4-chlorophenyl)-5,5-dimethyl-1-cyclohexen-1-yl]methyl]-1-piperazinyl]-N-[[4-[[(1R)-3-(4-morpholinyl)-1-[(phenylthio)methyl]propyl]amino]-3-[(trifluoromethyl)sulfonyl]phenyl]sulfonyl]benzamide (ABT-263, described in WO2009/155386), tetrocarcin A, antimycin, gossypol (BL), and the like.
- BCL-2 inhibitor of the present invention examples include BH3 peptides, (-)-gossypol acetic acid (AT-101), 4-[4-[(4'-chloro[1,1'-biphenyl]-2-yl)methyl]-1-piperazinyl]-N-[[4-[[(1R)-3-(dimethylamino)-1-[(phenylthio)methyl]propyl]amino]-3-nitrophenyl]sulfonyl]-benzamide (ABT-737, CAS 852808-04-9), Navitoclax, and pharmacologically acceptable salts of these drugs, and preferably venetoclax or a pharmacologically acceptable salt thereof
- BTK inhibitor refers to an agent that inhibits Bruton's tyrosine kinase (BTK), which is one of the enzymes called protein kinases.
- BTK inhibitor in the present invention may have the effect of inhibiting kinases other than BTK.
- the BTK inhibitor in the present invention is not particularly limited as long as it is a drug having the above properties, but examples thereof include spebrutinib (AVL-292, CC-292), tirabrutinib (ONO-4059), ibrutinib, acalabrutinib, zanubrutinib, and pharmacologically acceptable salts of these drugs, and preferably ibrutinib, acalabrutinib, zanubrutinib, or pharmacologically acceptable salts of these drugs.
- prodrugs of the above drugs that are converted into the above drugs in the body are also included in the BTK inhibitor of the present invention.
- drugs related to R-CHOP therapy refers to five drugs used in R-CHOP therapy, specifically, rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone (or prednisone).
- R-CHOP therapy refers to chemotherapy for cancer, and is a treatment method in which five drugs, rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone (or prednisone), are administered in combination.
- the other drug is a drug related to R-CHOP therapy.
- rituximab in the "drugs related to R-CHOP therapy” can be used in place of obinutuzumab in terms of antitumor activity, safety, toxicity, etc.
- five drugs, obinutuzumab, cyclophosphamide, doxorubicin, vincristine, and prednisolone (or prednisone) may be used as other drugs.
- G-CHOP therapy is a chemotherapy for cancer, and is a treatment method in which five drugs, obinutuzumab, cyclophosphamide, doxorubicin, vincristine, and prednisolone (or prednisone), are administered in combination.
- drugs related to R-CHP therapy refers to the four drugs used in R-CHP therapy, specifically, rituximab, cyclophosphamide, doxorubicin, and prednisolone (or prednisone).
- R-CHP therapy refers to chemotherapy for cancer, and is a treatment method in which the four drugs, rituximab, cyclophosphamide, doxorubicin, and prednisolone, are administered in combination.
- the other drug is a drug related to R-CHP therapy.
- rituximab in the "drugs related to R-CHP therapy" can be used in place of obinutuzumab in terms of antitumor activity, safety, toxicity, etc.
- four types of drugs, obinutuzumab, cyclophosphamide, doxorubicin, and prednisolone (or prednisone) may be used as other drugs.
- G-CHP therapy is a chemotherapy for cancer, and is a treatment method in which four types of drugs, obinutuzumab, cyclophosphamide, doxorubicin, and prednisolone (or prednisone), are administered in combination.
- alkylating agent refers to a drug that exerts an anticancer effect by alkylating the DNA of cancer cells and inhibiting cell proliferation.
- the alkylating agent is not particularly limited as long as it is a drug having the above-mentioned properties, and examples thereof include bendamustine (Bendamustine), cyclophosphamide (CPA), ifosfamide (IFO), dacarbazine (DTIC, DIC), temozolomide (TMZ), nimustine (ACNU), busulfan (BSF, BUS), procarbazine, melphalan (L-PAM), ranimustine (MCNU), and pharmacologically acceptable salts of these drugs, and preferably bendamustine or a pharmacologically acceptable salt thereof.
- prodrugs of the above drugs which are converted into the above drugs in vivo, are also included in the alkylating agents of the present invention.
- the term "immunomodulator” refers to a drug that modulates immune activity and exerts an anticancer effect.
- the immunomodulator is not particularly limited as long as it is a drug having the above-mentioned properties, and examples thereof include thalidomide, lenalidomide (LEN), and pharmacologically acceptable salts of these drugs, and preferably lenalidomide or a pharmacologically acceptable salt thereof.
- prodrugs of the above drugs that are converted into the above drugs in vivo are also included in the immunomodulator of the present invention.
- compositions and treatment methods characterized in that the anti-CD37 antibody-drug conjugate according to the present invention is administered in combination with other drugs will be described below.
- the pharmaceutical composition of the present invention may be administered as a pharmaceutical composition containing a pharma- ceutically acceptable carrier, diluent, solubilizer, emulsifier, preservative, adjuvant, etc.
- a pharma- ceutically acceptable carrier etc.
- the "pharma- ceutically acceptable carrier” etc. may be appropriately selected from a wide range depending on the type of target disease and the administration form of the drug.
- the "pharma-ceutically acceptable carrier” etc. may be, for example, a sterile liquid.
- the liquid may include, for example, water and oil (oil of petroleum, animal origin, vegetable origin, or synthetic origin).
- the oil may be, for example, peanut oil, soybean oil, mineral oil, sesame oil, etc. Water is more typical when the pharmaceutical composition is administered intravenously.
- Saline solutions as well as aqueous dextrose and glycerol solutions, may also be used as the liquid, particularly for injection solutions.
- Suitable pharmaceutical excipients may be appropriately selected from those known in the art. Examples of suitable "pharma-ceutically acceptable carriers" etc. are described in E. W. The formulation corresponds to the mode of administration.
- the method of administration of the pharmaceutical composition of the present invention may be appropriately selected, but may be, for example, injection, and may be local injection, intraperitoneal injection, selective intravenous injection, intravenous injection, subcutaneous injection, organ perfusion injection, etc. Administration may be, for example, by infusion or bolus injection.
- the solution for injection may be formulated using a carrier consisting of a salt solution, a glucose solution, or a mixture of salt water and glucose solution, various buffer solutions, etc.
- the solution for injection may be formulated in a powder state, and mixed with the liquid carrier at the time of use to prepare the injection solution.
- the administration of the anti-CD37 antibody-drug conjugate and other agents used in the present invention is by injection. Parenteral administration is the preferred route of administration.
- oral liquids powders, pills, capsules, tablets, etc.
- the liquids can be produced as oral liquid preparations such as suspensions and syrups using water, sugars such as sucrose, sorbitol, fructose, glycols such as polyethylene glycol, oils such as sesame oil and soybean oil, preservatives such as alkyl parahydroxybenzoate, flavors such as strawberry flavor and peppermint, etc.
- Powders, pills, capsules, and tablets can be formulated using excipients such as lactose, glucose, sucrose, mannitol, disintegrants such as starch and sodium alginate, lubricants such as magnesium stearate and talc, binders such as polyvinyl alcohol, hydroxypropyl cellulose, gelatin, surfactants such as fatty acid esters, plasticizers such as glycerin, etc. Tablets and capsules are preferred unit dosage forms in that they are easy to administer. When making tablets or capsules, solid pharmaceutical carriers are used.
- the pharmaceutical composition and treatment method of the present invention may be characterized in that the anti-CD37 antibody-drug conjugate and the other drug are contained as active ingredients in separate preparations and administered simultaneously or at different times, or the anti-CD37 antibody-drug conjugate and the other drug are contained as active ingredients in a single preparation and administered.
- compositions and treatment method of the present invention can be administered in combination with two or more of the other drugs used in the present invention.
- the other drug administered in combination with the anti-CD37 antibody-drug conjugate is not particularly limited, but may be, for example, a combination of one or more other drugs selected from the group consisting of molecular targeted drugs, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents, and is preferably selected from the group consisting of anti-CD20 antibodies, anti-CD19 antibodies, BCL-2 inhibitors, BTK inhibitors, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, alkylating agents, and immunomodulatory agents.
- rituximab obinutuzumab, tafasitamab, venetoclax, ibrutinib, acalabrutinib, zanubrutinib, drugs related to R-CHOP therapy, drugs related to R-CHP therapy, bendamustine, and lenalidomide, and even more preferably a combination with rituximab, or a combination with rituximab and bendamustine or a pharmacologically acceptable salt thereof.
- the pharmaceutical composition and treatment method of the present invention can be used for the treatment of cancer, and can be preferably used for the treatment of non-Hodgkin lymphoma (NHL), such as B-cell non-Hodgkin lymphoma (B-NHL) and T-cell lymphoma (TCL), and more preferably for the treatment of diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL), mantle cell lymphoma (MCL), marginal zone lymphoma (MCL), and other types of lymphoma classified as B-NHL.
- NHL non-Hodgkin lymphoma
- B-NHL B-cell non-Hodgkin lymphoma
- TCL T-cell lymphoma
- DLBCL diffuse large B-cell lymphoma
- FL follicular lymphoma
- MCL mantle cell lymphoma
- MCL marginal zone lymphoma
- other types of lymphoma classified as B-NHL classified as
- It can be used to treat at least one cancer selected from the group consisting of diffuse large B-cell lymphoma (MZL), Burkitt's lymphoma (BL), and chronic lymphocytic leukemia (CLL), as well as peripheral T-cell lymphoma (PTCL) and cutaneous T-cell lymphoma (CTCL), which are classified as TCL, and more preferably, it can be used to treat at least one cancer selected from the group consisting of diffuse large B-cell lymphoma, chronic lymphocytic leukemia, and follicular lymphoma.
- MZL diffuse large B-cell lymphoma
- BL Burkitt's lymphoma
- CLL chronic lymphocytic leukemia
- PTCL peripheral T-cell lymphoma
- CTCL cutaneous T-cell lymphoma
- the pharmaceutical composition and treatment method of the present invention can be used for the treatment of the above-mentioned cancers, as well as for the treatment of myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML).
- MDS myelodysplastic syndromes
- AML acute myeloid leukemia
- the presence or absence of the CD37 tumor marker can be confirmed, for example, by collecting tumor tissue from a cancer patient and testing the formalin-fixed, paraffin-embedded (FFPE) specimen at the gene product (protein) level using immunohistochemistry (IHC), a flow cytometer, Western blot, etc., or by testing at the gene transcription level using in situ hybridization (ISH), quantitative PCR (q-PCR), microarray analysis, etc.
- FFPE formalin-fixed, paraffin-embedded
- IHC immunohistochemistry
- ISH in situ hybridization
- q-PCR quantitative PCR
- microarray analysis etc.
- acellular circulating tumor DNA (ctDNA) can be collected from a cancer patient and tested using a method such as next-generation sequencing (NGS).
- NGS next-generation sequencing
- the pharmaceutical composition and treatment method of the present invention can be preferably used in mammals, but more preferably in humans.
- the antitumor effect of the pharmaceutical composition and treatment method of the present invention can be confirmed, for example, by creating a model in which cancer cells are transplanted into a test animal and measuring the reduction in tumor volume and the life-prolonging effect of administering the pharmaceutical composition and treatment method of the present invention, and can be determined by indices such as estimated tumor volume, tumor growth inhibition rate (TGI), change from baseline in tumor volume, and complete response (CR) rate.
- TGI tumor growth inhibition rate
- CR complete response
- the toxicity of the pharmaceutical composition and treatment method of the present invention can be confirmed, for example, by weight loss in a model before and after administration of the pharmaceutical composition and treatment method of the present invention.
- the weight loss is preferably not more than 50%, more preferably not more than 40%, even more preferably not more than 30%, and particularly preferably not more than 20%.
- the toxicity of the combined use of the anti-CD37 antibody-drug conjugate used in the present invention and other drugs can be confirmed by comparing the toxicity of the anti-CD37 antibody-drug conjugate used in the present invention and other drugs when administered alone.
- the pharmaceutical composition and treatment method of the present invention preferably have the combined effect of the anti-CD37 antibody-drug conjugate used in the present invention and other drugs, without increasing toxicity.
- the antitumor effect of the pharmaceutical composition and treatment method of the present invention can be confirmed in clinical trials by the Response Evaluation Criteria in Solid Tumors (RECIST) evaluation method, the WHO evaluation method, the Macdonald evaluation method, weight measurement, and other methods, and a complete response (CR), partial response (PR), or other similar results can be obtained.
- This can be determined using indicators such as progression (progression rate; PR), progression (progressive disease; PD), objective response rate (ORR), duration of response (DoR), progression-free survival (PFS), and overall survival (OS).
- the above-mentioned method makes it possible to confirm the superiority of the antitumor effect of the pharmaceutical composition and treatment method of the present invention over existing pharmaceutical compositions and treatment methods for cancer treatment.
- the pharmaceutical composition and treatment method of the present invention can slow the growth of cancer cells, inhibit their proliferation, and even destroy them. These actions can relieve cancer patients from symptoms caused by cancer and improve their quality of life, thereby preserving the life of the cancer patient and achieving a therapeutic effect. Even if the cancer cells are not destroyed, the inhibition and control of cancer cell proliferation can enable cancer patients to achieve a higher quality of life and longer survival.
- the pharmaceutical composition of the present invention may be administered containing one or more pharma- ceutical compatible components.
- the pharma-ceutical compatible components may be appropriately selected from formulation additives and other components commonly used in this field depending on the dosage and administration concentration of the anti-CD37 antibody-drug conjugate and other drugs used in the present invention.
- the anti-CD37 antibody-drug conjugate used in the present invention may be administered as a pharmaceutical composition containing a buffer such as a histidine buffer, an excipient such as sucrose or trehalose, and a surfactant such as polysorbate 80 or 20.
- the pharmaceutical composition containing the anti-CD37 antibody-drug conjugate used in the present invention may be preferably used as an injection, more preferably used as an aqueous injection or a lyophilized injection, and even more preferably used as a lyophilized injection.
- the pharmaceutical composition containing the anti-CD37 antibody-drug conjugate used in the present invention is an aqueous injection, it can be preferably administered intravenously by drip infusion after diluting with an appropriate diluent.
- diluents include glucose solution and saline solution, preferably glucose solution, and more preferably 5% glucose solution.
- the pharmaceutical composition containing the anti-CD37 antibody-drug conjugate used in the present invention is a lyophilized injection, it can be preferably dissolved in water for injection, diluted with a required amount of an appropriate diluent, and then administered by intravenous drip.
- the diluent include glucose solution and physiological saline solution, and preferably glucose solution, and more preferably 5% glucose solution.
- the introduction routes that can be used to administer the pharmaceutical composition of the present invention include, for example, intravenous, intradermal, subcutaneous, intramuscular, and intraperitoneal routes, and preferably, intravenous routes.
- the anti-CD37 antibody-drug conjugate used in the present invention can be administered to humans at intervals of once every 1 to 180 days, preferably once every week, 2 weeks, 3 weeks, or 4 weeks, and more preferably once every 3 weeks.
- the anti-CD37 antibody-drug conjugate used in the present invention can be administered at a dose of approximately 0.001 to 100 mg/kg per administration, preferably at a dose of 0.8 to 12.4 mg/kg per administration.
- the molecular targeted drug used in the present invention is rituximab
- it can be preferably administered by intravenous drip infusion at a single dose of 125 mg/m 2 , 250 mg/m 2 , 375 mg/m 2 , or 500 mg/m 2 at weekly intervals.
- the molecular targeted drug used in the present invention is obinutuzumab
- it can be preferably administered intravenously at a dose of 200 mg, 400 mg, 800 mg, 1000 mg, 1200 mg or 2000 mg at one time at intervals of 1 to 2 weeks.
- the molecular targeted drug used in the present invention is tafasitamab, it can be preferably administered intravenously at a dose of 3 mg/kg, 6 mg/kg, 12 mg/kg, or 24 mg/kg at weekly intervals.
- the molecular targeted drug used in the present invention is venetoclax or a pharmacologically acceptable salt thereof, it can be orally administered at a dose of 20 mg, 50 mg, 100 mg, 200 mg, 400 mg or 600 mg once a day.
- the molecular targeted drug used in the present invention is ibrutinib or a pharmacologically acceptable salt thereof, it can be orally administered at a dose of 140 mg, 280 mg, 420 mg, 560 mg, or 700 mg once a day.
- the molecular targeted drug used in the present invention is acalabrutinib or a pharmacologically acceptable salt thereof, it can be orally administered at a dose of 50 mg, 100 mg, 150 mg or 200 mg twice daily.
- the molecular targeted drug used in the present invention is zanubrutinib or a pharmacologically acceptable salt thereof, it can be orally administered at a dose of 40 mg, 80 mg, 160 mg, 240 mg, 320 mg, 400 mg or 480 mg once a day or twice a day.
- the alkylating agent used in the present invention is bendamustine or a pharmacologically acceptable salt thereof, it can be preferably administered by intravenous infusion at a dose of 50 mg/ m2 , 60 mg/ m2 , 75 mg/ m2 , 90 mg/ m2 , 100 mg/ m2 , 120 mg/ m2 or 125 mg/ m2 per administration once a day.
- the immunomodulatory agent used in the present invention is lenalidomide or a pharmacologically acceptable salt thereof, it can be orally administered at a dose of 10 mg, 15 mg, 20 mg, or 25 mg once a day.
- the pharmaceutical composition and treatment method of the present invention may further contain a cancer therapeutic agent other than the antibody-drug conjugate of the present invention and other drugs.
- the pharmaceutical composition and treatment method of the present invention may be administered in combination with other cancer therapeutic agents, thereby enhancing the antitumor effect.
- the other cancer therapeutic agents used for such purposes may be administered to an individual simultaneously with the pharmaceutical composition of the present invention, separately, or consecutively, or may be administered at different administration intervals.
- Such cancer therapeutic agents are not limited as long as they are drugs that have antitumor activity, but include, for example, irinotecan (CPT-11), cisplatin, carboplatin, oxaliplatin, fluorouracil (5-FU), gemcitabine, capecitabine, paclitaxel (Paclitaxel), and the like.
- clitaxel docetaxel
- doxorubicin epirubicin
- cyclophosphamide mitomycin C
- tegafur gimeracil
- oteracil combination drug cetuximab, panitumumab
- bevacizumab Bevacizumab, Ramucirumab Regorafenib
- Trifluridine/Tipiracil combination drug Gefitinib, Erlotinib, Afatinib, Methotrexate, Pemetrexed, Tamoxifen , toremifene, fulvestrant, leuprorelin, goserelin, letrozole, anastrozole, progesterone formulation, trastuzumab, pertuzumab, and lapatinib.
- the pharmaceutical composition and treatment method of the present invention can also be used in combination with radiation therapy.
- a cancer patient can receive radiation therapy before and/or after, or simultaneously with, treatment with the pharmaceutical composition of the present invention.
- the pharmaceutical composition and treatment method of the present invention can also be used as adjuvant chemotherapy in combination with surgery.
- the pharmaceutical composition of the present invention may be administered before surgery to reduce tumor size (referred to as preoperative adjuvant chemotherapy, or neoadjuvant therapy), or after surgery to prevent tumor recurrence (referred to as postoperative adjuvant chemotherapy, or adjuvant therapy).
- the pharmaceutical composition and treatment method of the present invention can also be used as a maintenance therapy.
- treatment can be continued after the initial chemotherapy to prevent recurrence.
- the present invention includes a method of treatment, characterized in that the anti-CD37 antibody-drug conjugate of the present application and another drug of the present application are administered in combination to an individual in need of treatment.
- the present invention includes the anti-CD37 antibody-drug conjugate of the present application for treating a disease by administering in combination with another drug of the present application.
- the present invention includes the use of the anti-CD37 antibody-drug conjugate of the present application for the manufacture of a medicament for treating a disease by administering in combination with another drug of the present application.
- the present invention includes a pharmaceutical product containing the anti-CD37 antibody-drug conjugate of the present application and another drug of the present application for administration in combination.
- the present invention includes a combination pharmaceutical containing the anti-CD37 antibody-drug conjugate of the present application and another drug of the present application.
- the present invention includes a pharmaceutical combination containing the anti-CD37 antibody-drug conjugate of the present application and another drug of the present application.
- the present invention includes the use of the anti-CD37 antibody-drug conjugate of the present application in combination with another drug of the present application for treating a disease.
- the present invention includes a pharmaceutical containing the anti-CD37 antibody-drug conjugate of the present application and other drugs of the present application.
- Example 1 Preparation of humanized anti-CD37 antibody
- 1)-1 Design of anti-CD37 humanized antibody 1-1 Molecular modeling of variable region of anti-CD37 antibody A method known as homology modeling (Methods in Enzymology, 203, 121-153 (1991)) was used. Using a commercially available protein three-dimensional structure analysis program DiscoveryStudio (Dassault Systèmes), structures registered in the Protein Data Bank (Nuc. Acid Res. 35, D301-D303 (2007)) that have high sequence homology to the variable region were searched for. A three-dimensional model structure was created using the hit heavy chain, light chain, and interface structure between the heavy chain and light chain as templates.
- a humanized antibody of anti-CD37 mouse monoclonal antibody HH1 (Smeland E, et al., Scand J Immunol, 21(3), 205-214 (1985)) was constructed by a method generally known as CDR grafting (Proc. Natl. Acad. Sci. USA 86, 10029-10033 (1989)).
- the framework region of the anti-CD37 human chimeric antibody was constructed according to the method described in KABAT et al. Since these sequences have high homology to the consensus sequences of human ⁇ chain subgroup 1 and human ⁇ chain subgroup 1 defined in (Sequences of Proteins of Immunological Interest, 5th Ed. Public Health Service National Institutes of Health, Bethesda, MD.
- a humanized antibody light chain was designed by connecting the ⁇ chain constant region of human IgG1 to the variable region of the designed anti-CD37 humanized antibody light chain, and was named hmAb-L11.
- the full-length amino acid sequence of hmAb-L11 is shown in SEQ ID NO:2.
- the nucleotide sequence encoding the amino acid sequence of SEQ ID NO:2 is shown in SEQ ID NO:1.
- a humanized antibody heavy chain was designed in which the variable region of the designed anti-CD37 humanized antibody heavy chain was connected to the ⁇ -chain constant region of human IgG1 by grafting to the consensus sequence of human ⁇ -chain subgroup 1, which has the highest homology to the anti-CD37 human chimeric antibody, and was named hmAb-H11.
- the full-length amino acid sequence of hmAb-H11 is shown in SEQ ID NO:4.
- the nucleotide sequence encoding the amino acid sequence of SEQ ID NO:4 is shown in SEQ ID NO:3.
- the full-length amino acid sequence of hmAb-H551 is shown in SEQ ID NO:8.
- the nucleotide sequence encoding the amino acid sequence of SEQ ID NO:8 is shown in SEQ ID NO:7.
- the full-length amino acid sequence of hmAb-H11a is shown in SEQ ID NO:10.
- the nucleotide sequence encoding the amino acid sequence of SEQ ID NO:10 is shown in SEQ ID NO:9.
- the anti-CD37 humanized antibody having hmAb-H11 as the heavy chain and hmAb-L11 as the light chain was named hmAb-H11L11.
- the anti-CD37 humanized antibody having hmAb-H541 as the heavy chain and hmAb-L11 as the light chain was named hmAb-H541L11.
- the anti-CD37 humanized antibody having hmAb-H551 as the heavy chain and hmAb-L11 as the light chain was named hmAb-H551L11.
- the anti-CD37 humanized antibody having hmAb-H11a as the heavy chain and hmAb-L11 as the light chain was named hmAb-H11aL11.
- FreeStyle 293F cells (manufactured by Thermo Fisher Scientific) were passaged and cultured according to the manual. FreeStyle 293F cells in the logarithmic growth phase were diluted with FreeStyle293 expression medium (manufactured by Thermo Fisher Scientific) to adjust to 2.0 x 106 cells/mL, and 600 mL was seeded into a 3 L Fernbach Erlenmeyer Flask (manufactured by CORNING). 1.8 mg of polyethyleneimine (Polysciences) was added to 20 mL of Opti-Pro SFM medium (Thermo Fisher Scientific).
- Example 1 1)-2-4 Purification of anti-CD37 humanized antibody
- the antibody was purified from the culture supernatant obtained in Example 1)-2-3 by a two-step process of rProtein A affinity chromatography and ceramic hydroxyapatite.
- the culture supernatant was equilibrated with PBS and applied to a column (manufactured by Cytiva) packed with MabSelectSuRe, and the column was washed with PBS of at least twice the column volume.
- the antibody was then eluted with 2M arginine hydrochloride solution (pH 4.0).
- Fractions containing antibodies were dialyzed using a Slide-A-Lyzer Dialysis Cassette (Thermo Fisher Scientific), buffer-exchanged to PBS, and diluted 5-fold with a buffer of 5 mM sodium phosphate/50 mM MES/pH 7.0, and then applied to a ceramic hydroxyapatite column (Bio-Rad Laboratories) equilibrated with a buffer of 5 mM NaPi/50 mM MES/30 mM NaCl/pH 7.0. Linear gradient elution with sodium chloride was performed, and fractions containing antibodies were collected.
- the fractions were dialyzed using a Dialysis Cassette, and buffer-exchanged to HBSor (25 mM histidine/5% sorbitol, pH 6.0).
- the antibody was concentrated using VIVASPIN 20 (molecular weight cutoff UF10K, manufactured by Sartorius Stedim Biotech) to adjust the IgG concentration to 20 to 25 mg/mL.
- VIVASPIN 20 molecular weight cutoff UF10K, manufactured by Sartorius Stedim Biotech
- Minisart Plus manufactured by Sartorius Stedim Biotech
- hmAb-H11L11 prepared in Example 1)-2 was adjusted to 10.67 mg/mL with PBS6.0/EDTA using common procedures B (using 1.50 mL mg -1 cm -1 as the 280 nm extinction coefficient) and C described in Production Method 1.
- 1M aqueous solution of dipotassium hydrogen phosphate Nacalai Tesque, Inc.; 0.0075 mL
- 10 mM aqueous solution of TCEP Tokyo Chemical Industry Co., Ltd.
- TCEP Tokyo Chemical Industry Co., Ltd.
- hmAb-H11L11 prepared in Example 1)-2 was adjusted to 10.67 mg/mL with PBS6.0/EDTA using common procedures B (using 1.50 mL mg -1 cm -1 as the 280 nm extinction coefficient) and C described in Production Method 1.
- 1M aqueous solution of dipotassium hydrogen phosphate Nacalai Tesque, Inc.; 0.0075 mL
- 10 mM aqueous solution of TCEP Tokyo Chemical Industry Co., Ltd.
- TCEP Tokyo Chemical Industry Co., Ltd.
- hmAb-H11L11 prepared in Example 1)-2 was adjusted to 10.67 mg/mL with PBS6.0/EDTA using common procedures B (using 1.50 mL mg -1 cm -1 as the 280 nm extinction coefficient) and C described in Production Method 1.
- 1M aqueous solution of dipotassium hydrogen phosphate Nacalai Tesque, Inc.; 0.124 mL
- 10 mM aqueous solution of TCEP Tokyo Chemical Industry Co., Ltd.
- TCEP Tokyo Chemical Industry Co., Ltd.
- hmAb-H541L11 prepared in Example 1)-2 was adjusted to 10.63 mg/mL with PBS6.0/EDTA using common procedures B (using 1.50 mL mg -1 cm -1 as the 280 nm extinction coefficient) and C described in Production Method 1.
- B using 1.50 mL mg -1 cm -1 as the 280 nm extinction coefficient
- C described in Production Method 1.
- To this solution (8.9 mL) were added 1 M aqueous solution of dipotassium hydrogen phosphate (Nacalai Tesque, Inc.; 0.133 mL) and 10 mM aqueous solution of TCEP (Tokyo Chemical Industry Co., Ltd.) (0.389 mL; 6.0 equivalents per antibody molecule). After confirming that the pH of this solution was within 7.0 ⁇ 0.1, the solution was incubated at 37° C. for 2 hours to reduce the disulfide bond between the intra-chain portions of the antibody.
- hmAb-H551L11 prepared in Example 1)-2 was adjusted to 10.62 mg/mL with PBS6.0/EDTA using common procedures B (using 1.50 mL mg -1 cm -1 as the 280 nm extinction coefficient) and C described in Production Method 1.
- B using 1.50 mL mg -1 cm -1 as the 280 nm extinction coefficient
- C described in Production Method 1.
- To this solution (9.4 mL) were added 1 M aqueous solution of dipotassium hydrogen phosphate (Nacalai Tesque, Inc.; 0.141 mL) and 10 mM aqueous solution of TCEP (Tokyo Chemical Industry Co., Ltd.) (0.411 mL; 6.0 equivalents per antibody molecule). After confirming that the pH of this solution was within 7.0 ⁇ 0.1, the solution was incubated at 37° C. for 2 hours to reduce the disulfide bond between the intra-chain portions of the antibody.
- hmAb-H11aL11 prepared in Example 1)-2 was adjusted to 10.59 mg/mL with PBS6.0/EDTA using common procedures B (using 1.50 mL mg -1 cm -1 as the 280 nm extinction coefficient) and C described in Production Method 1.
- 1M aqueous solution of dipotassium hydrogen phosphate Nacalai Tesque, Inc.; 0.150 mL
- 10 mM aqueous solution of TCEP Tokyo Chemical Industry Co., Ltd.
- Antitumor tests were evaluated using an animal model in which cells of a CD37-positive human tumor cell line were transplanted into immunodeficient mice.
- SCID mice CB17/Icr-Prkdc[scid]/CrlCrlj: Charles River Japan, Jackson Laboratory Japan, C.B-17/Icr-scid/scidJcl: CLEA Japan
- SCID mice delivered at 4-6 weeks of age were acclimated for 3 days or more under SPF conditions before use in experiments.
- the mice were fed sterilized solid feed (FR-2, Funabashi Farms Co., Ltd.) and given sterilized tap water (sodium hypochlorite solution was prepared to a final concentration of 3 ppm).
- the major and minor axes of the transplanted tumors were measured two or three times a week using an electronic digital caliper (CD-15CX, Mitutoyo Corp.), and the estimated tumor volume was calculated using the following formula. In this specification, the estimated tumor volume may be simply referred to as "tumor volume.”
- Estimated Tumor Volume (mm 3 ) 1/2 ⁇ major axis (mm) ⁇ [minor axis (mm)] 2
- the anti-CD37 antibody-drug conjugate (1) was diluted with ABS buffer (10 mM acetate buffer, 5% sorbitol, pH 5.5) (NACALAI) or histidine buffer (10 mM histidine buffer, pH 5.5, 9% (w/v) sucrose, 0.03% (w/v) PS80) and administered into the tail vein at the dose shown in each Example.
- Rituximab (Zenyaku Kogyo Co., Ltd.), Bendamustine (Symbio Pharmaceuticals Co., Ltd.), Tafasitamab (MorphoSys Co., Ltd.), Lenalidomide (AdooQ Co., Ltd.), Ibrutinib (synthesized by a method well known to those skilled in the art), and Venetoclax (synthesized by a method well known to those skilled in the art) were administered at the dosages shown in each Example.
- an anti-CD37 antibody-drug conjugate (1) prepared by the method described in Example 2)-5, or an anti-CD37 antibody-drug conjugate (1) prepared by the method described in Example 2)-5 with minor modifications in accordance with the scale of preparation was used. Five to six mice were used per group in the experiment.
- CD37-positive human diffuse large B-cell lymphoma cell line OCI-LY7 (DSMZ) was suspended in 50% Matrigel (Corning, diluted with PBS), and 1 ⁇ 10 7 cells were subcutaneously transplanted into the right flank of female SCID mice (Day 0), and random grouping was performed on Day 12.
- anti-CD37 antibody-drug conjugate (1) and Rituximab were administered into the tail vein at doses of 1 mg/kg and 10 mg/kg, respectively.
- Single agent and combination groups, as well as a solvent-administered group as a control group were set up.
- TGI Tumor Growth Inhibition
- Tumor Growth Inhibition (%) (1 - Mean Estimated Tumor Volume of each group / Mean Estimated Tumor Volume of Vehicle Control) x 100
- the percentage change in tumor volume on Day 22 for each individual was calculated using the formula below, with the tumor volume on Day 12 used as the baseline, and is shown in Table 1 and Figure 12.
- the anti-CD37 antibody-drug conjugate (1) administration group, and the Rituximab administration group showed a superior tumor regression effect.
- the CR (Complete Response) rate (%) on the final observation day (Day 61) was calculated using the following formula and listed in Table 1.
- the CR rate represents the percentage (%) of the number of individuals in each group with an Estimated Tumor Volume of 0 mm3 among the total number of individuals in each group.
- the anti-CD37 antibody-drug conjugate (1) administration group, and the Rituximab administration group the size of the tumor reached a humane endpoint during the observation period, whereas the anti-CD37 antibody-drug conjugate (1) and Rituximab combination group showed an excellent tumor regression effect, showing a CR in all individuals until the end of observation.
- no weight loss of 20% or more was observed in any individual of the mice administered each compound.
- the combination of anti-CD37 antibody-drug conjugate (1) and Rituximab increased efficacy without increasing toxicity.
- CR rate (%) (number of individuals with an estimated tumor volume of 0 mm3 in each group/total number of individuals in each group) ⁇ 100
- CD37-positive human diffuse large B-cell lymphoma cell line SU-DHL-4 (DSMZ) was suspended in 50% Matrigel, and 1 x 107 cells were subcutaneously transplanted into the right flank of female SCID mice (Day 0), and randomized into groups on Day 16. Single drug and combination groups, as well as a solvent-administered group as a control group, were set up. The rate of change in TGI and tumor volume on Day 38 was calculated and is shown in Table 2.
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 3 mg/kg at the time of grouping.
- Rituximab was administered into the tail vein at a dose of 10 mg/kg on the day of grouping, and Bendamustine was administered intraperitoneally at a dose of 12.5 mg/kg on the day of grouping and the following day.
- the TGI on Day 38 in the anti-CD37 antibody-drug conjugate (1)-administered group and the RB-administered group were 44% and 28%, respectively, while the combined group showed a superior tumor growth inhibitory effect to each of the single agent groups (TGI, 78%).
- the results of the combined use of anti-CD37 antibody-drug conjugate (1) and Tafasitamab are shown in Figure 15.
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 3 mg/kg at the time of grouping.
- Tafasitamab was administered into the tail vein at a dose of 30 mg/kg every week from the day of grouping.
- the TGI on Day 38 in the anti-CD37 antibody-drug conjugate (1)-administered group and the Tafasitamab-administered group was 44% and 39%, respectively, while the combined use group showed a superior tumor growth inhibitory effect to each of the single-agent groups (TGI, 76%).
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 3 mg/kg at the time of grouping.
- Tafasitamab was administered into the tail vein at a dose of 30 mg/kg once a week from the day of grouping, and lenalidomide was orally administered at a dose of 10 mg/kg five times a week from the day of grouping.
- TGI tumor growth inhibitory effect
- CD37-positive human follicular lymphoma cell line DOHH-2 (DSMZ) was suspended in 50% Matrigel at 3 x 106 cells and subcutaneously implanted into the right flank of female SCID mice (Day 0), and randomized into groups on Day 23. Single drug and combination groups, as well as an untreated control group, were set up. The rate of change in TGI and tumor volume on Day 44 was calculated and is shown in Table 3.
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 0.3 mg/kg at the time of grouping.
- Rituximab was administered into the tail vein at a dose of 1 mg/kg on the day of grouping
- Bendamustine was administered intraperitoneally at a dose of 12.5 mg/kg on the day of grouping and the following day.
- the TGI on Day 44 in the anti-CD37 antibody-drug conjugate (1) group and the RB group were 26% and 68%, respectively, while the combination group showed a superior tumor growth inhibitory effect compared to each single agent group (TGI, 94%).
- TGI tumor growth inhibitory effect
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 0.3 mg/kg at the time of grouping.
- Rituximab was administered into the tail vein at a dose of 1 mg/kg on the day of grouping, and Lenalidomide was orally administered at a dose of 10 mg/kg five times a week from the time of grouping.
- TGI on Day 44 for the anti-CD37 antibody-drug conjugate (1) group and R-Lenalidomide group was 26% and 54%, respectively, and the combined group showed a superior tumor growth inhibitory effect to each of the single agent groups (TGI, 74%).
- the rate of change in tumor volume on Day 44 is shown in Figure 21.
- a clear additive effect was observed by combining anti-CD37 antibody-drug conjugate (1) with each drug, and in particular, the combination of anti-CD37 antibody-drug conjugate (1) with RB was observed to have a tumor regression effect. Furthermore, none of the mice administered each compound experienced a weight loss of 20% or more. Therefore, the combination of anti-CD37 antibody-drug conjugate (1) with the other drugs increased efficacy without increasing toxicity.
- CD37-positive human chronic lymphocytic leukemia cell line JVM-13 (ATCC) was suspended in 50% Matrigel, and 1 ⁇ 10 7 cells were subcutaneously transplanted into the right flank of female SCID mice (Day 0), and randomized into groups on Day 14. Single drug and combination groups, as well as an untreated control group, were set up. The rate of change in TGI and tumor volume on Day 35 was calculated and is shown in Table 4.
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 0.3 mg/kg at the time of grouping.
- Rituximab was administered into the tail vein at a dose of 10 mg/kg on the day of grouping, and Bendamustine was administered intraperitoneally at a dose of 12.5 mg/kg on the day of grouping and the following day.
- the TGI on Day 35 in the anti-CD37 antibody-drug conjugate (1) group and the RB group were 27% and 51%, respectively, while the combination group showed a superior tumor growth inhibitory effect compared to each single agent group (TGI, 81%).
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 0.3 mg/kg at the time of grouping.
- Venetoclax was orally administered at a dose of 100 mg/kg daily from the day of grouping.
- the TGI on Day 35 for the anti-CD37 antibody-drug conjugate (1) group and the Venetoclax group was 27% and 25%, respectively, while the combined group showed a superior tumor growth inhibitory effect to each single-agent group (TGI, 49%).
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 0.3 mg/kg at the time of grouping.
- Rituximab was administered into the tail vein at a dose of 10 mg/kg on the day of grouping, and Venetoclax was orally administered at a dose of 100 mg/kg every day from the day of grouping.
- TGI tumor growth inhibitory effect
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 0.3 mg/kg at the time of grouping.
- Ibrutinib was orally administered at a dose of 200 mg/kg daily from the day of grouping.
- the TGI on Day 35 for the anti-CD37 antibody-drug conjugate (1) group and the Ibrutinib group were 27% and -12%, respectively, while the combined group showed a superior tumor growth inhibitory effect compared to each single-agent group (TGI, 53%).
- the rate of change in tumor volume on Day 35 is shown in Figure 27.
- a clear additive effect was observed by combining anti-CD37 antibody-drug conjugate (1) with each drug, and in particular, the combination of anti-CD37 antibody-drug conjugate (1) with R-Venetoclax was observed to have a tumor regression effect. Furthermore, none of the mice administered each compound experienced a weight loss of 20% or more. Therefore, the combination of anti-CD37 antibody-drug conjugate (1) with the other drugs increased efficacy without increasing toxicity.
- Example 4 Internalization evaluation
- Each type of cell was seeded at 5 ⁇ 10 4 cells/well in a 96-well Clear Round Bottom TC-treated Microplate (Corning), and an anti-CD37 antibody-drug conjugate (1) fluorescently labeled using Alexa Fluor (registered trademark) 488 Antibody Labeling Kit (Thermo Fisher SCIENTIFIC) and Rituximab or Human IgG1, Myeloma (Merck Millipore, hereinafter referred to as "IgG1") were added to a final concentration of 1.5 ⁇ g/mL.
- IgG1 Merck Millipore
- the antibody-drug conjugate (2) is an antibody-drug conjugate made from human IgG1 that recognizes an antigen unrelated to CD37.
- Each plate was cultured at 4°C for 1 hour and at 37°C for 1 to 6 hours, respectively, washed, and ice-cold PBS or Anti-Alexa Fluor (registered trademark) 488, rabbit IgG fraction (Thermo Fisher SCIENTIFIC) diluted to 25 ⁇ g/mL was added. After incubation at 4°C for 30 minutes, 2% PFA/PBS was added, and the cells were fixed at 4°C. After fixation, measurements were performed using a NovoCyte flow cytometer system. Two wells were cultured under each condition, and the average internalization rate calculated using the following formula is shown. MFI stands for Mean Fluorescence Intensity.
- Example 5 Antitumor Test 2
- the antitumor test was carried out in the same manner as in Example 3.
- the anti-CD37 antibody-drug conjugate (1) was diluted with histidine buffer (10 mM histidine buffer, pH 5.5, 9% (w/v) sucrose, 0.03% (w/v) PS80) and administered into the tail vein at the doses shown in each Example.
- CD37-positive human diffuse large B-cell lymphoma cell line OCI-LY7 (DSMZ) was suspended in 50% Matrigel (Corning, diluted with PBS), and 1 x 107 cells were subcutaneously transplanted into the right flank of female SCID mice (Day 0), and randomized into groups on Day 10. Single drug and combination groups, as well as an untreated group as a control group, were set up. The change rates of TGI and tumor volume on Day 18, and the CR rate on the final observation day (Day 42) were calculated and are shown in Table 5.
- the TGI on Day 18 in the anti-CD37 antibody-drug conjugate (1) group and the R-CHP group was 85% and 76%, respectively, while the combination group showed a superior tumor growth inhibition effect compared to each single agent group (TGI, 93%). Furthermore, the CR rate on the final observation day was 100%.
- Predonisone was orally administered once a day at a dose of 0.15 mg/kg for 5 days.
- the TGI on Day 18 in the anti-CD37 antibody-drug conjugate (1) group and the R-CHP group was 85% and 81%, respectively, while the combination group showed a superior tumor growth inhibitory effect compared to each single drug group (TGI, 95%).
- the CR rate on the final observation day was 100%.
- CD37-positive human chronic lymphocytic leukemia cell line JVM-3 (DSMZ) was suspended in 50% Matrigel, and 3 x 106 cells were subcutaneously transplanted into the right flank of female SCID mice (Day 0), and randomized into groups on Day 13. Single drug and combination groups, as well as an untreated control group, were set up. The rate of change in TGI and tumor volume on Day 28 was calculated and is shown in Table 6.
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 0.3 mg/kg at the time of grouping.
- Obinutuzumab was administered into the tail vein at a dose of 30 mg/kg on the day of grouping.
- the TGI on Day 28 in the anti-CD37 antibody-drug conjugate (1) group and the Obinutuzumab group was 47% and 44%, respectively, while the combination group showed a superior tumor growth inhibitory effect compared to each single agent group (TGI, 82%).
- CD37-positive human chronic lymphocytic leukemia cell line JVM-13 (ATCC) was suspended in 50% Matrigel, and 1 ⁇ 10 7 cells were subcutaneously transplanted into the right flank of female SCID mice (Day 0), and randomized into groups on Day 10. Single drug and combination groups, as well as an untreated group as a control group, were set up. The rate of change in TGI and tumor volume on Day 25 was calculated and is shown in Table 7.
- Anti-CD37 antibody-drug conjugate (1) was administered into the tail vein at a dose of 0.3 mg/kg at the time of grouping.
- Obinutuzumab was administered into the tail vein at a dose of 30 mg/kg on the day of grouping.
- the TGI on Day 25 in the anti-CD37 antibody-drug conjugate (1) group and the Obinutuzumab group was 58% and 50%, respectively, while the combination group showed a superior tumor growth inhibitory effect compared to each single agent group (TGI, 86%).
- Example 6 Evaluation of cell proliferation inhibitory activity by combined use of anti-CD37 antibody-drug conjugate (1) and various BTK inhibitors
- CD37-positive human chronic lymphocytic leukemia cell lines JVM-2 (DSMZ), JVM-3 (DSMZ), and JVM-13 (ATCC) were seeded on a 96-well cell culture plate (Corning), and anti-CD37 antibody-drug conjugate (1) diluted to various concentrations was added.
- DMSO solutions of Ibrutinib (synthesized by a method known to those skilled in the art), Acalabrutinib (prepared by purifying a formulation obtained from AstraZeneca by a method known to those skilled in the art) or Zanubrutinib (prepared by purifying a formulation obtained from BeiGene by a method known to those skilled in the art) diluted to various concentrations (hereinafter collectively referred to as "various BTK inhibitors”) or DMSO were added (DMSO concentration 0.1% or less), and the cells were cultured for 6 days. During the culture period, all were cultured at 37°C under 5% CO2 .
- the cell proliferation inhibition rate was calculated based on the following formula from the measured luminescence intensity of various concentrations of anti-CD37 antibody-drug conjugate (1), various BTK inhibitors added group (T), and DMSO added group (C).
- the concentration of anti-CD37 antibody-drug conjugate (1) was converted to a log value, and then curve fitting was performed using a four-parameter logistic model to calculate the 50% cell proliferation inhibition concentration (IC 50 ) for anti-CD37 antibody-drug conjugate (1) alone, various BTK inhibitors alone, and combinations of anti-CD37 antibody-drug conjugate (1) and various BTK inhibitors at various concentrations.
- the present invention can be used in a pharmaceutical composition characterized in that an anti-CD37 antibody-drug conjugate and another drug are administered in combination, and/or a treatment method characterized in that an anti-CD37 antibody-drug conjugate and another drug are administered in combination to an individual.
- SEQ ID NO:1 Nucleotide sequence encoding hmAb-L11 light chain
- SEQ ID NO:2 Amino acid sequence of full length hmAb-L11 light chain
- SEQ ID NO:3 Nucleotide sequence encoding hmAb-H11 heavy chain
- SEQ ID NO:4 Amino acid sequence of full length hmAb-H11 heavy chain
- SEQ ID NO:5 Nucleotide sequence encoding hmAb-H541 heavy chain
- SEQ ID NO:6 Amino acid sequence of full length hmAb-H541 heavy chain
- SEQ ID NO:7 Nucleotide sequence encoding hmAb-H551 heavy chain
- SEQ ID NO:8 Amino acid sequence of full length hmAb-H551 heavy chain
- SEQ ID NO:9 Nucleotide sequence encoding hmAb-H11a heavy chain
- SEQ ID NO:10 Amino acid sequence of full length hmAb-
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Abstract
Description
[1] 抗CD37抗体-薬物コンジュゲートを含む医薬組成物であって、
該抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤が、組み合わされて投与され、
該抗CD37抗体-薬物コンジュゲートは、式
で示される薬物リンカーと、抗CD37抗体とがチオエーテル結合によって結合した抗CD37抗体-薬物コンジュゲートである、医薬組成物。
[2] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[1]の医薬組成物:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[3] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[1]又は[2]の医薬組成物:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[4] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[1]乃至[3]のいずれか1つの医薬組成物。
[5] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[1]乃至[4]のいずれか1つの医薬組成物。
[6] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[1]乃至[5]のいずれか1つの医薬組成物。
[7] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が3.5から4.5個の範囲である、[1]乃至[5]のいずれか1つの医薬組成物。
[8] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[1]乃至[7]のいずれか1つの医薬組成物。
[9] 抗CD20抗体が、リツキシマブ又はオビヌツズマブである、[8]の医薬組成物。
[10] 抗CD19抗体が、タファシタマブである、[8]又は[9]の医薬組成物。
[11] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[8]乃至[10]のいずれか1つの医薬組成物。
[12] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[8]乃至[11]のいずれか1つの医薬組成物。
[13] アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[1]乃至[12]のいずれか1つの医薬組成物。
[14] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[1]乃至[13]のいずれか1つの医薬組成物。
[15] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[1]乃至[9]及び[13]のいずれか1つの医薬組成物。
[16] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[1]乃至[8]、[10]及び[14]のいずれか1つの医薬組成物。
[17] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[1]乃至[9]及び[14]のいずれか1つの医薬組成物。
[18] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[1]乃至[9]及び[11]のいずれか1つの医薬組成物。
[19] 抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[1]乃至[18]のいずれか1つの医薬組成物。
[20] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫等のT細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、[1]乃至[19]のいずれか1つの医薬組成物。
[21] びまん性大細胞型B細胞リンパ腫の治療のための、[20]の医薬組成物。
[22] 慢性リンパ性白血病の治療のための、[20]の医薬組成物。
[23] 濾胞性リンパ腫の治療のための、[20]の医薬組成物。
[24] 抗CD37抗体-薬物コンジュゲートを含む医薬組成物であって、
該抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤が、組み合わされて投与され、
該抗CD37抗体-薬物コンジュゲートは、式
で示される抗CD37抗体-薬物コンジュゲートである、医薬組成物。
[25] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[24]の医薬組成物:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[26] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[24]又は[25]の医薬組成物:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[27] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[24]乃至[26]のいずれか1つの医薬組成物。
[28] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[24]乃至[27]のいずれか1つの医薬組成物。
[29] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[24]乃至[28]のいずれか1つの医薬組成物。
[30] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が3.5から4.5個の範囲である、[24]乃至[28]のいずれか1つの医薬組成物。
[31] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[24]乃至[30]のいずれか1つの医薬組成物。
[32] 抗CD20抗体が、リツキシマブ又はオビヌツズマブである、[31]の医薬組成物。
[33] 抗CD19抗体が、タファシタマブである、[31]又は[32]の医薬組成物。
[34] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[31]乃至[33]のいずれか1つの医薬組成物。
[35] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[31]乃至[34]のいずれか1つの医薬組成物。
[36]アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[24]乃至[35]のいずれか1つの医薬組成物。
[37] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[24]乃至[36]のいずれか1つの医薬組成物。
[38] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[24]乃至[32]及び[36]のいずれか1つの医薬組成物。
[39] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[24]乃至[31]、[33]及び[37]のいずれか1つの医薬組成物。
[40] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[24]乃至[32]及び[37]のいずれか1つの医薬組成物。
[41] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[24]乃至[32]及び[34]のいずれか1つの医薬組成物。
[42] 抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[24]乃至[41]のいずれか1つの医薬組成物。
[43] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫等のT細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、[24]乃至[42]のいずれか1つの医薬組成物。
[44] びまん性大細胞型B細胞リンパ腫の治療のための、[43]の医薬組成物。
[45] 慢性リンパ性白血病の治療のための、[43]の医薬組成物。
[46] 濾胞性リンパ腫の治療のための、[43]の医薬組成物。
[47] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、組み合わされて治療を必要とする個体に投与されることを特徴とする治療方法であって、
該抗CD37抗体-薬物コンジュゲートは、式
で示される薬物リンカーと、抗体とがチオエーテル結合によって結合した抗CD37抗体-薬物コンジュゲートである、治療方法。
[48] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[47]の治療方法:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[49] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[47]又は[48]の治療方法:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[50] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[47]乃至[49]のいずれか1つの治療方法。
[51] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[47]乃至[50]のいずれか1つの治療方法。
[52] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[47]乃至[51]のいずれか1つの治療方法。
[53] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が3.5から4.5個の範囲である、[47]乃至[51]のいずれか1つの治療方法。
[54] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[47]乃至[53]のいずれか1つの治療方法。
[55] 抗CD20抗体が、リツキシマブ又はオビヌツズマブである、[54]の治療方法。
[56] 抗CD19抗体が、タファシタマブである、[54]又は[55]の治療方法。
[57] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[54]乃至[56]のいずれか1つの治療方法。
[58] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[54]乃至[57]のいずれか1つの治療方法。
[59] アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[47]乃至[58]のいずれか1つの治療方法。
[60] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[47]乃至[59]のいずれか1つの治療方法。
[61] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[47]乃至[55]及び[59]のいずれか1つの治療方法。
[62] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[47]乃至[54]、[56]及び[60]のいずれか1つの治療方法。
[63] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[47]乃至[55]及び[60]のいずれか1つの治療方法。
[64] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[47]乃至[55]及び[57]のいずれか1つの治療方法。
[65] 抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[47]乃至[64]のいずれか1つの治療方法。
[66] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫等のT細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、[47]乃至[65]のいずれか1つの治療方法。
[67] びまん性大細胞型B細胞リンパ腫の治療のための、[66]の治療方法。
[68] 慢性リンパ性白血病の治療のための、[66]の治療方法。
[69] 濾胞性リンパ腫の治療のための、[66]の治療方法。
[70] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、組み合わされて治療を必要とする個体に投与されることを特徴とする治療方法であって、
該抗CD37抗体-薬物コンジュゲートは、式
で示される抗CD37抗体-薬物コンジュゲートである、治療方法。
[71] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[70]の治療方法:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[72] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[70]又は[71]の治療方法:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[73] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[70]乃至[72]のいずれか1つの治療方法。
[74] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[70]乃至[73]のいずれか1つの治療方法。
[75] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[70]乃至[74]のいずれか1つの治療方法。
[76] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が3.5から4.5個の範囲である、[70]乃至[74]のいずれか1つの治療方法。
[77] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[70]乃至[76]のいずれか1つの治療方法。
[78] 抗CD20抗体が、リツキシマブ又はオビヌツズマブである、[77]の治療方法。
[79] 抗CD19抗体が、タファシタマブである、[77]又は[78]の治療方法。
[80] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[77]乃至[79]のいずれか1つの治療方法。
[81] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[77]乃至[80]のいずれか1つの治療方法。
[82] アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[70]乃至[81]のいずれか1つの治療方法。
[83] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[70]乃至[82]のいずれか1つの治療方法。
[84] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[70]乃至[78]及び[82]のいずれか1つの治療方法。
[85] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[70]乃至[77]、[79]及び[83]のいずれか1つの治療方法。
[86] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[70]乃至[78]及び[83]のいずれか1つの治療方法。
[87] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[70]乃至[78]及び[80]のいずれか1つの治療方法。
[88] 抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[70]乃至[87]のいずれか1つの治療方法。
[89] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫等のT細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、[70]乃至[88]のいずれか1つの治療方法。
[90] びまん性大細胞型B細胞リンパ腫の治療のための、[89]の治療方法。
[91] 慢性リンパ性白血病の治療のための、[89]の治療方法。
[92] 濾胞性リンパ腫の治療のための、[89]の治療方法。
[93] がんの治療のための、他の薬剤と組み合わせた使用のための抗CD37抗体-薬物コンジュゲート;
該抗CD37抗体-薬物コンジュゲートは、式
で示される薬物リンカーと、抗体とがチオエーテル結合によって結合した抗CD37抗体-薬物コンジュゲートであって、
該他の薬剤は、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤である、抗体-薬物コンジュゲート。
[94] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[93]の抗体-薬物コンジュゲート:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[95] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[93]又は[94]の抗体-薬物コンジュゲート:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[96] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[93]乃至[95]のいずれか1つの抗体-薬物コンジュゲート。
[97] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[93]乃至[96]のいずれか1つの抗体-薬物コンジュゲート。
[98] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[93]乃至[97]のいずれか1つの抗体-薬物コンジュゲート。
[99] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が3.5から4.5個の範囲である、[93]乃至[97]のいずれか1つの抗体-薬物コンジュゲート。
[100] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[93]乃至[99]のいずれか1つの抗体-薬物コンジュゲート。
[101] 抗CD20抗体が、リツキシマブ又はオビヌツズマブである、[100]の抗体-薬物コンジュゲート。
[102] 抗CD19抗体が、タファシタマブである、[100]又は[101]の抗体-薬物コンジュゲート。
[103] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[100]乃至[102]のいずれか1つの抗体-薬物コンジュゲート。
[104] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[100]乃至[103]のいずれか1つの抗体-薬物コンジュゲート。
[105] アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[93]乃至[104]のいずれか1つの抗体-薬物コンジュゲート。
[106] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[93]乃至[105]のいずれか1つの抗体-薬物コンジュゲート。
[107] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[93]乃至[101]及び[105]のいずれか1つの抗体-薬物コンジュゲート。
[108] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[93]乃至[100]、[102]及び[106]のいずれか1つの抗体-薬物コンジュゲート。
[109] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[93]乃至[101]及び[106]のいずれか1つの抗体-薬物コンジュゲート。
[110] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[93]乃至[101]及び[103]のいずれか1つの抗体-薬物コンジュゲート。
[111] 抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[93]乃至[110]のいずれか1つの抗体-薬物コンジュゲート。
[112] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫等のT細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、[93]乃至[111]のいずれか1つの抗体-薬物コンジュゲート。
[113] びまん性大細胞型B細胞リンパ腫の治療のための、[112]の抗体-薬物コンジュゲート。
[114] 慢性リンパ性白血病の治療のための、[112]の抗体-薬物コンジュゲート。
[115] 濾胞性リンパ腫の治療のための、[112]の抗体-薬物コンジュゲート。
[116] がんの治療のための、他の薬剤と組み合わせた使用のための抗CD37抗体-薬物コンジュゲート;
該抗CD37抗体-薬物コンジュゲートは、式
で示される抗CD37抗体-薬物コンジュゲートであって、
該他の薬剤は、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤である、抗体-薬物コンジュゲート。
[117] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[116]の抗体-薬物コンジュゲート:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[118] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[116]又は[117]の抗体-薬物コンジュゲート:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[119] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[116]乃至[118]のいずれか1つの抗体-薬物コンジュゲート。
[120] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[116]乃至[119]のいずれか1つの抗体-薬物コンジュゲート。
[121] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[116]乃至[120]のいずれか1つの抗体-薬物コンジュゲート。
[122] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が3.5から4.5個の範囲である、[116]乃至[120]のいずれか1つの抗体-薬物コンジュゲート。
[123] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[116]乃至[122]のいずれか1つの抗体-薬物コンジュゲート。
[124] 抗CD20抗体が、リツキシマブ又はオビヌツズマブである、[123]の抗体-薬物コンジュゲート。
[125] 抗CD19抗体が、タファシタマブである、[123]又は[124]の抗体-薬物コンジュゲート。
[126] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[123]乃至[125]のいずれか1つの抗体-薬物コンジュゲート。
[127] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[123]乃至[126]のいずれか1つの抗体-薬物コンジュゲート。
[128] アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[116]乃至[127]のいずれか1つの抗体-薬物コンジュゲート。
[129] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[116]乃至[128]のいずれか1つの抗体-薬物コンジュゲート。
[130] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[116]乃至[124]及び[128]のいずれか1つの抗体-薬物コンジュゲート。
[131] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[116]乃至[123]、[125]及び[129]のいずれか1つの抗体-薬物コンジュゲート。
[132] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[116]乃至[124]及び[129]のいずれか1つの抗体-薬物コンジュゲート。
[133] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[116]乃至[124]及び[126]のいずれか1つの抗体-薬物コンジュゲート。
[134] 抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[116]乃至[133]のいずれか1つの抗体-薬物コンジュゲート。
[135] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫等のT細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、[116]乃至[134]のいずれか1つの抗体-薬物コンジュゲート。
[136] びまん性大細胞型B細胞リンパ腫の治療のための、[135]の抗体-薬物コンジュゲート。
[137] 慢性リンパ性白血病の治療のための、[135]の抗体-薬物コンジュゲート。
[138] 濾胞性リンパ腫の治療のための、[135]の抗体-薬物コンジュゲート。
[139] がんの治療のための医薬の製造における、他の薬剤と組み合わせた抗CD37抗体-薬物コンジュゲートの使用;
該抗CD37抗体-薬物コンジュゲートは、式
で示される薬物リンカーと、抗体とがチオエーテル結合によって結合した抗CD37抗体-薬物コンジュゲートであって、
該他の薬剤は、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤である、使用。
[140] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[139]の使用:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[141] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[139]又は[140]の使用:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[142] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[139]乃至[141]のいずれか1つの使用。
[143] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[139]乃至[142]のいずれか1つの使用。
[144] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[139]乃至[143]のいずれか1つの使用。
[145] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が3.5から4.5個の範囲である、[139]乃至[143]のいずれか1つの使用。
[146] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[139]乃至[145]のいずれか1つの使用。
[147] 抗CD20抗体が、リツキシマブ又はオビヌツズマブである、[146]の使用。
[148] 抗CD19抗体が、タファシタマブである、[146]又は[147]の使用。
[149] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[146]乃至[148]のいずれか1つの使用。
[150] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[146]乃至[149]のいずれか1つの使用。
[151] アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[139]乃至[150]のいずれか1つの使用。
[152] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[139]乃至[151]のいずれか1つの使用。
[153] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[139]乃至[147]及び[151]のいずれか1つの使用。
[154] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[139]乃至[146]、[148]及び[152]のいずれか1つの使用。
[155] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[139]乃至[147]及び[152]のいずれか1つの使用。
[156] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[139]乃至[147]及び[149]のいずれか1つの使用。
[157] 抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[139]乃至[156]のいずれか1つの使用。
[158] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫等のT細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、[139]乃至[157]のいずれか1つの使用。
[159] びまん性大細胞型B細胞リンパ腫の治療のための、[158]の使用。
[160] 慢性リンパ性白血病の治療のための、[158]の使用。
[161] 濾胞性リンパ腫の治療のための、[158]の使用。
[162] がんの治療のための医薬の製造における、他の薬剤と組み合わせた抗CD37抗体-薬物コンジュゲートの使用;
該抗CD37抗体-薬物コンジュゲートは、式
で示される抗CD37抗体-薬物コンジュゲートであって、
該他の薬剤は、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤である、使用。
[163] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[162]の使用:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[164] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[162]又は[163]の使用:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[165] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[162]乃至[164]のいずれか1つの使用。
[166] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[162]乃至[165]のいずれか1つの使用。
[167] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[162]乃至[166]のいずれか1つの使用。
[168] 抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が3.5から4.5個の範囲である、[162]乃至[166]のいずれか1つの使用。
[169] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[162]乃至[168]のいずれか1つの使用。
[170] 抗CD20抗体が、リツキシマブ又はオビヌツズマブである、[169]の使用。
[171] 抗CD19抗体が、タファシタマブである、[169]又は[170]の使用。
[172] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[169]乃至[171]のいずれか1つの使用。
[173] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[169]乃至[172]のいずれか1つの使用。
[174] アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[162]乃至[173]のいずれか1つの使用。
[175] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[162]乃至[174]のいずれか1つの使用。
[176] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[162]乃至[170]及び[174]のいずれか1つの使用。
[177] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[162]乃至[169]、[171]及び[175]のいずれか1つの使用。
[178] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[162]乃至[170]及び[175]のいずれか1つの使用。
[179] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[162]乃至[170]及び[172]のいずれか1つの使用。
[180] 抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[162]乃至[179]のいずれか1つの使用。
[181] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫等のT細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、[162]乃至[180]のいずれか1つの使用。
[182] びまん性大細胞型B細胞リンパ腫の治療のための、[181]の使用。
[183] 慢性リンパ性白血病の治療のための、[181]の使用。
[184] 濾胞性リンパ腫の治療のための、[181]の使用。
[A1] 抗CD37抗体-薬物コンジュゲートを含む医薬組成物であって、
該抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤が、組み合わされて投与される、医薬組成物。
[A2] 抗CD37抗体-薬物コンジュゲートの薬物が、トポイソメラーゼI阻害剤である[A1]の医薬組成物。
[A3] 以下の式で表される薬物が、
[A4] 以下の式で表される抗腫瘍化合物が、
[A5] 抗腫瘍化合物が、抗CD37抗体に存在するジスルフィド結合部分に形成されるチオエーテル結合によってリンカーを介して抗CD37抗体に結合している、[A4]の医薬組成物。
[A6] リンカーが-Gly-Gly-Phe-Gly-のテトラペプチド残基を含む、[A4]又は[A5]の医薬組成物。
[A7] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤が、組み合わされて投与され、
該抗CD37抗体-薬物コンジュゲートは、式
で示される薬物リンカーと、抗CD37抗体とがチオエーテル結合によって結合した抗CD37抗体-薬物コンジュゲートである、[A1]乃至[A6]のいずれか1つの医薬組成物。
[A8] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A7]の医薬組成物:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A9] 抗CD37抗体が、以下の(a)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A7]又は[A8]の医薬組成物:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A10] 抗CD37抗体が、以下の(b)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A7]又は[A8]の医薬組成物:
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A11] 抗CD37抗体が、以下の(c)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A7]又は[A8]の医薬組成物:
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A12] 抗CD37抗体が、以下の(d)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A7]又は[A8]の医薬組成物:
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A13] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[A7]又は[A8]の医薬組成物:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A14] 抗CD37抗体が、以下の(e)に記載の重鎖及び軽鎖を含む抗体である、[A7]乃至[A9]及び[A13]のいずれか1つの医薬組成物:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A15] 抗CD37抗体が、以下の(f)に記載の重鎖及び軽鎖を含む抗体である、[A7]、[A8]、[A10]及び[A13]のいずれか1つの医薬組成物:
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A16] 抗CD37抗体が、以下の(g)に記載の重鎖及び軽鎖を含む抗体である、[A7]、[A8]、[A11]及び[A13]のいずれか1つの医薬組成物:
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A17] 抗CD37抗体が、以下の(h)に記載の重鎖及び軽鎖を含む抗体である、[A7]、[A8]、[A12]及び[A13]のいずれか1つの医薬組成物:
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A18] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[A7]乃至[A17]のいずれか1つの医薬組成物。
[A19] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[A7]乃至[A18]のいずれか1つの医薬組成物。
[A20] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[A7]乃至[A19]のいずれか1つの医薬組成物。
[A21] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が約8個である、[A7]乃至[A20]のいずれか1つの医薬組成物。
[A22] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[A7]乃至[A21]のいずれか1つの医薬組成物。
[A23] 抗CD20抗体が、リツキシマブである、[A22]の医薬組成物。
[A24] 抗CD20抗体が、オビヌツズマブである、[A22]の医薬組成物。
[A25] 抗CD19抗体が、タファシタマブである、[A22]乃至[A24]のいずれか1つの医薬組成物。
[A26] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[A22]乃至[A25]のいずれか1つの医薬組成物。
[A27] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[A22]乃至[A26]のいずれか1つの医薬組成物。
[A28] BTK阻害剤が、アカラブルチニブ又はその薬理上許容される塩である、[A22]乃至[A26]のいずれか1つの医薬組成物。
[A29] BTK阻害剤が、ザヌブルチニブ又はその薬理上許容される塩である、[A22]乃至[A26]のいずれか1つの医薬組成物。
[A30] アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[A7]乃至[A29]のいずれか1つの医薬組成物。
[A31] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[A7]乃至[A30]のいずれか1つの医薬組成物。
[A32] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[A7]乃至[A21]のいずれか1つの医薬組成物。
[A33] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[A7]乃至[A21]のいずれか1つの医薬組成物。
[A34] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[A7]乃至[A21]のいずれか1つの医薬組成物。
[A35] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[A7]乃至[A21]のいずれか1つの医薬組成物。
[A36] 他の薬剤が、R-CHOP療法に係る薬剤である、[A7]乃至[A21]のいずれか1つの医薬組成物。
[A37] 他の薬剤が、R-CHP療法に係る薬剤である、[A7]乃至[A21]のいずれか1つの医薬組成物。
[A38] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[A7]乃至[A37]のいずれか1つの医薬組成物。
[A39] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[A7]乃至[A37]のいずれか1つの医薬組成物。
[A40] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための[A7]乃至[A39]のいずれか1つの医薬組成物。
[A41] びまん性大細胞型B細胞リンパ腫の治療のための、[A40]の医薬組成物。
[A42] 慢性リンパ性白血病の治療のための、[A40]の医薬組成物。
[A43] 濾胞性リンパ腫の治療のための、[A40]の医薬組成物。
[A44] 抗CD37抗体-薬物コンジュゲートを含む医薬組成物であって、
該抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤が、組み合わされて投与され、
該抗CD37抗体-薬物コンジュゲートは、式
で示される抗CD37抗体-薬物コンジュゲートである、[A1]乃至[A6]のいずれか1つの医薬組成物。
[A45] 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A44]の医薬組成物:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A46] 抗CD37抗体が、以下の(a)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A44]又は[A45]の医薬組成物:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A47] 抗CD37抗体が、以下の(b)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A44]又は[A45]の医薬組成物:
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A48] 抗CD37抗体が、以下の(c)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A44]又は[A45]の医薬組成物:
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A49] 抗CD37抗体が、以下の(d)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である[A44]又は[A45]の医薬組成物:
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。
[A50] 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、[A44]又は[A45]の医薬組成物:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A51] 抗CD37抗体が、以下の(e)に記載の重鎖及び軽鎖を含む抗体である、[A44]乃至[A46]及び[A50]のいずれか1つの医薬組成物:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A52] 抗CD37抗体が、以下の(f)に記載の重鎖及び軽鎖を含む抗体である、[A44]、[A45]、[A47]及び[A50]のいずれか1つの医薬組成物:
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A53] 抗CD37抗体が、以下の(g)に記載の重鎖及び軽鎖を含む抗体である、[A44]、[A45]、[A48]及び[A50]のいずれか1つの医薬組成物:
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A54] 抗CD37抗体が、以下の(h)に記載の重鎖及び軽鎖を含む抗体である、[A44]、[A45]、[A49]及び[A50]のいずれか1つの医薬組成物:
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。
[A55] 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、[A44]乃至[A54]のいずれか1つの医薬組成物。
[A56] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、[A44]乃至[A55]のいずれか1つの医薬組成物。
[A57] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、[A44]乃至[A56]のいずれか1つの医薬組成物。
[A58] 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が約8個である、[A44]乃至[A57]のいずれか1つの医薬組成物。
[A59] 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、[A44]乃至[A58]のいずれか1つの医薬組成物。
[A60] 抗CD20抗体が、リツキシマブである、[A59]の医薬組成物。
[A61] 抗CD20抗体が、オビヌツズマブである、[A59]の医薬組成物。
[A62] 抗CD19抗体が、タファシタマブである、[A59]乃至[A61]のいずれか1つの医薬組成物。
[A63] BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、[A59]乃至[A62]のいずれか1つの医薬組成物。
[A64] BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、[A59]乃至[A63]のいずれか1つの医薬組成物。
[A65] BTK阻害剤が、アカラブルチニブ又はその薬理上許容される塩である、[A59]乃至[A63]のいずれか1つの医薬組成物。
[A66] BTK阻害剤が、ザヌブルチニブ又はその薬理上許容される塩である、[A59]乃至[A63]のいずれか1つの医薬組成物。
[A67] アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、[A44]乃至[A66]のいずれか1つの医薬組成物。
[A68] 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、[A44]乃至[A67]のいずれか1つの医薬組成物。
[A69] 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、[A44]乃至[A58]のいずれか1つの医薬組成物。
[A70] 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[A44]乃至[A58]のいずれか1つの医薬組成物。
[A71] 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、[A44]乃至[A58]のいずれか1つの医薬組成物。
[A72] 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、[A44]乃至[A58]のいずれか1つの医薬組成物。
[A44] 他の薬剤が、R-CHOP療法に係る薬剤である、[A44]乃至[A58]のいずれか1つの医薬組成物。
[A73] 他の薬剤が、R-CHP療法に係る薬剤である、[A44]乃至[A58]のいずれか1つの医薬組成物。
[A74] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[A44]乃至[A73]のいずれか1つの医薬組成物。
[A75] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[A44]乃至[A73]のいずれか1つの医薬組成物。
[A76] びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための[A44]乃至[A75]のいずれか1つの医薬組成物。
[A77] びまん性大細胞型B細胞リンパ腫の治療のための、[A76]の医薬組成物。
[A78] 慢性リンパ性白血病の治療のための、[A76]の医薬組成物。
[A79] 濾胞性リンパ腫の治療のための、[A76]の医薬組成物。
[B2] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[B1]の治療方法。
[B3] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[B1]の治療方法。
[B4] [A40]又は[A76]で定義される疾患からなる群より選択される少なくとも一つの治療のための、[B1]乃至[B3]のいずれか1つの治療方法。
[C2] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[C1]の抗CD37抗体-薬物コンジュゲート。
[C3] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[C1]の抗CD37抗体-薬物コンジュゲート。
[C4] [A40]又は[A76]で定義される疾患からなる群より選択される少なくとも一つの治療のための、[C1]乃至[C3]のいずれか1つの抗CD37抗体-薬物コンジュゲート。
[D2] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[D1]の使用。
[D3] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[D1]の使用。
[D4] [A40]又は[A76]で定義される疾患からなる群より選択される少なくとも一つの治療のための、[D1]乃至[D3]のいずれか1つの使用。
[E2] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[E1]の医薬製品。
[E3] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[E1]の医薬製品。
[E4] [A40]又は[A76]で定義される疾患からなる群より選択される少なくとも一つの治療のための、[E1]乃至[E3]のいずれか1つの医薬製品。
[F2] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[F1]の組み合わせ医薬。
[F3] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[F1]の組み合わせ医薬。
[F4] [A40]又は[A76]で定義される疾患からなる群より選択される少なくとも一つの治療のための、[F1]乃至[F3]のいずれか1つの組み合わせ医薬。
[G2] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[G1]の薬学的組み合わせ。
[G3] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[G1]の薬学的組み合わせ。
[G4] [A40]又は[A76]で定義される疾患からなる群より選択される少なくとも一つの治療のための、[G1]乃至[G3]のいずれか1つの薬学的組み合わせ。
[H2] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[H1]の使用。
[H3] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[H1]の使用。
[H4] [A40]又は[A76]で定義される疾患からなる群より選択される少なくとも一つの治療のための、[H1]乃至[H3]のいずれか1つの使用。
[I2] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、[I1]の医薬。
[I3] 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、[I1]の医薬。
[I4] [A40]又は[A76]で定義される疾患からなる群より選択される少なくとも一つの治療のための、[I1]乃至[I3]のいずれか1つの医薬。
本発明において、「遺伝子」とは、タンパク質のアミノ酸をコードするヌクレオチド配列が含まれる核酸分子又はその相補鎖を意味し、例えば、タンパク質のアミノ酸をコードするヌクレオチド配列又はその配列に相補的なヌクレオチド配列を有するポリヌクレオチド、オリゴヌクレオチド、DNA、mRNA、cDNA、cRNA等は「遺伝子」の意味に含まれる。これらの遺伝子は一本鎖、二本鎖又は三本鎖以上のヌクレオチドであり、DNA鎖とRNA鎖の会合体、一本のヌクレオチド鎖上にリボヌクレオチド(RNA)とデオキシリボヌクレオチド(DNA)が混在するもの及びそのようなヌクレオチド鎖を含む二本鎖又は三本鎖以上のヌクレオチドも「遺伝子」の意味に含まれる。本発明の「CD37遺伝子」としては、例えば、CD37タンパク質のアミノ酸配列をコードするヌクレオチド配列が含まれるDNA、mRNA、cDNA、cRNA等を挙げることができる。
CD37は、テトラスパニンスーパーファミリーに属する4回膜貫通型タンパクである(Charrin S.,et al.,J Cell Sci.,3641-3648,127,2014)。281アミノ酸からなる膜タンパク質であり、アミノ末端側、カルボキシル末端側共に細胞内に持ち、NM_001774、NP_001765(NCBI)等のアクセッション番号により参照可能である。
MSAQESCLSL IKYFLFVFNL FFFVLGSLIF CFGIWILIDK TSFVSFVGLA FVPLQIWSKV LAISGIFTMG IALLGCVGAL KELRCLLGLY FGMLLLLFAT QITLGILIST QRAQLERSLR DVVEKTIQKY GTNPEETAAE ESWDYVQFQL RCCGWHYPQD WFQVLILRGN GSEAHRVPCS CYNLSATNDS TILDKVILPQ LSRLGHLARS RHSADICAVP AESHIYREGC AQGLQKWLHN NLISIVGICL GVGLLELGFM TLSIFLCRNL DHVYNRLARY R
(1)抗体
本発明においては、CD37と結合する抗体及びCD37を認識する抗体を、いずれも「抗CD37抗体」と表記するか又は「CD37抗体」と略記することがある。
(I)抗原の調製
抗原は抗原タンパク質をコードする遺伝子を遺伝子操作によって宿主細胞に産生させることによって得ることができる。具体的には、抗原遺伝子を発現可能なベクターを作製し、これを宿主細胞に導入して該遺伝子を発現させ、発現した抗原を精製すればよい。上記の遺伝子操作による抗原発現細胞、あるいは抗原を発現している細胞株を動物に免疫する方法を用いることによっても抗体を取得できる。
本発明で使用される抗CD37抗体は、特に制限はないが、例えば、本願の配列表で示されたアミノ酸配列で特定される抗体を好適に使用することができる。本発明において使用される抗CD37抗体としては、以下の特性を有するものが望ましい。
(i)以下の特性を有することを特徴とする抗体;
・CD37に特異的に結合する。
・CD37と結合することによってCD37発現細胞に内在化する活性を有する。
(ii)CD37がヒトCD37である上記(i)に記載の抗体。
(iii)CD37の高次構造を認識する上記(i)又は(ii)に記載の抗体。
(a)CD37のcDNAを発現ベクターに組み込み、エレクトロポレーションや遺伝子銃等の方法によって、そのベクターを直接被免疫動物に投与することによって、動物体内においてCD37を発現させることによって、免疫反応を惹起させることができる。エレクトロポレーション等によるベクターの投与は抗体価を上げるために必要であれば、1回でも複数回でもよく、好ましくは複数回である、
(b)免疫反応を惹起された上述の動物より、抗体産生細胞を含む組織(例えばリンパ節)の採取、
(c)骨髄腫細胞(以下「ミエローマ」という)の調製、
(d)抗体産生細胞とミエローマとの細胞融合、
(e)目的とする抗体を産生するハイブリドーマ群の選別、
(f)単一細胞クローンへの分割(クローニング)、
(g)モノクローナル抗体を大量に製造するためのハイブリドーマ培養、又はハイブリドーマを移植した動物の飼育、
(h)このようにして製造されたモノクローナル抗体の生理活性(内在化活性)、及びその結合特異性の検討、あるいは標識試薬としての特性の検定。
本発明の抗体には、上記CD37に対するモノクローナル抗体に加え、ヒトに対する異種抗原能を低下させること、抗体-薬物コンジュゲートの物性の改善等を目的として人為的に改変した遺伝子組み換え型抗体、例えば、キメラ(Chimeric)抗体、ヒト化(Humanized)抗体、ヒト(Human)抗体等も含まれる。これらの抗体は、既知の方法を用いて製造することができる。
抗体遺伝子を一旦単離した後、適当な宿主に導入して抗体を作製する場合には、適当な宿主と発現ベクターの組み合わせを使用することができる。抗体遺伝子の具体例としては、本明細書に記載された抗体の重鎖配列をコードする遺伝子、及び軽鎖配列をコードする遺伝子を組み合わせたものを挙げることができる。宿主細胞を形質転換する際には、重鎖配列遺伝子と軽鎖配列遺伝子は、同一の発現ベクターに挿入されていることが可能であり、又別々の発現ベクターに挿入されていることも可能である。
(i)軽鎖配列遺伝子が配列番号1に示されるヌクレオチド配列を有しかつ重鎖配列遺伝子が配列番号3に示されるヌクレオチド配列を含む抗体遺伝子、
(ii)軽鎖配列遺伝子が配列番号1に示されるヌクレオチド配列を有しかつ重鎖配列遺伝子が配列番号5に示されるヌクレオチド配列を含む抗体遺伝子、
(iii)軽鎖配列遺伝子が配列番号1に示されるヌクレオチド配列を有しかつ重鎖配列遺伝子が配列番号7に示されるヌクレオチド配列を含む抗体遺伝子、又は
(iv)軽鎖配列遺伝子が配列番号1に示されるヌクレオチド配列を有しかつ重鎖配列遺伝子が配列番号9に示されるヌクレオチド配列を含む抗体遺伝子。
本発明において使用される抗CD37抗体-薬物コンジュゲートは、次式
で示される薬物リンカーと、抗CD37抗体とがチオエーテル結合によって結合した抗CD37抗体-薬物コンジュゲートである。
上記「3.抗CD37抗体の製造」にて取得された抗CD37抗体はリンカー構造部分を介して薬物を結合させることによって、抗CD37抗体-薬物コンジュゲートとすることができる。薬物としては、リンカー構造に結合できる置換基、部分構造を有するものであれば特に制限はない。抗CD37抗体-薬物コンジュゲートは結合する薬物に応じて種々の用途に用いることができる。そのような薬物の例としては、抗腫瘍活性を有する物質、血液疾患に対する効果を有する物質、自己免疫疾患に対する効果を有する物質、抗炎症物質、抗菌物質、抗真菌物質、抗寄生虫物質、抗ウイルス物質、抗麻酔物質等を挙げることができる。
本発明の抗CD37抗体-薬物コンジュゲートに結合される化合物として抗腫瘍化合物を用いる例について以下に述べる。抗腫瘍化合物としては、抗腫瘍効果を有する化合物であって、リンカー構造に結合できる置換基、部分構造を有するものであれば特に制限はない。抗腫瘍化合物は、リンカーの一部又は全部が腫瘍細胞内で切断されて抗腫瘍化合物部分が遊離されて抗腫瘍効果が発現される。リンカーが薬物との結合部分で切断されれば抗腫瘍化合物が本来の構造で遊離され、その本来の抗腫瘍効果が発揮される。
本発明の抗CD37抗体-薬物コンジュゲートにおいて薬物を抗CD37抗体に結合させるリンカー構造について述べる。
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-。
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-。
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-。
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-(NH-DX)、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-(NH-DX)、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2-O-CH2-C(=O)-(NH-DX)、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2CH2-O-CH2-C(=O)-(NH-DX)、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-(NH-DX)、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-(NH-DX)。
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2-O-CH2-C(=O)-(NH-DX)、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2CH2-O-CH2-C(=O)-(NH-DX)、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-(NH-DX)。
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2-O-CH2-C(=O)-(NH-DX)
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-(NH-DX)。
本発明の抗体-薬物コンジュゲートに用いることができる抗体は、上記「3.抗CD37抗体の製造」の項及び実施例に記載の内在化活性を有する抗CD37抗体及び該抗体の抗原結合性断片であれば特に制限がない。
下記式(1)の抗体-薬物コンジュゲートのうち、チオエーテルを介して抗CD37抗体とリンカー構造が結合しているものは抗CD37抗体を還元してジスルフィド結合をスルヒドリル基に変換した抗体ABに対して、既知の方法によって入手しうる化合物(2)(例えば、米国特許公開公報2016/297890号に記載の方法(例えば当該公開公報の段落[0336]~[0374]に記載の方法)で入手可能)を反応させることによって製造することができる。例えば下記の方法によって製造することができる。
ここで、L1は、
-(Succinimid-3-yl-N)-の構造で示される。
L1’は次式で示される、マレイミジル基を示す。]
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-。
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-。
-(Succinimid-3-yl-N)-CH2CH2CH2CH2CH2-C(=O)-GGFG-NH-CH2-O-CH2-C(=O)-、
-(Succinimid-3-yl-N)-CH2CH2-C(=O)-NH-CH2CH2O-CH2CH2O-CH2CH2-C(=O)-GGFG-NH-CH2CH2CH2-C(=O)-。
製造した抗体-薬物コンジュゲート(1)は、以下の共通操作によって濃縮、バッファー交換、精製、抗体濃度及び抗体一分子あたりの薬物平均結合数の測定を行い、抗体-薬物コンジュゲート(1)の同定を行うことができる。
Amicon Ultra(50,000 MWCO,Millipore Corporation)の容器内に抗体もしくは抗体-薬物コンジュゲート溶液を入れ、遠心機(Allegra X-15R,Beckman Coulter,Inc.)を用いた遠心操作(2000G乃至3800Gにて5乃至20分間遠心)にて、抗体もしくは抗体-薬物コンジュゲート溶液を濃縮する。
UV測定器(Nanodrop 1000,Thermo Fisher Scientific Inc.)を用いて、メーカー規定の方法に従い、抗体濃度の測定を行う。その際に、抗体ごとに異なる280nm吸光係数(1.3mLmg-1cm-1乃至1.8mLmg-1cm-1)を用いる。
Sephadex G-25担体を使用したNAP-25カラム(Cat.No.17-0852-02,GE Healthcare Japan Corporation)を、メーカー規定の方法に従い、塩化ナトリウム(50mM)及びEDTA(2mM)を含むリン酸緩衝液(50mM,pH6.0)(本明細書でPBS6.0/EDTAと称する。)にて平衡化させる。このNAP-25カラム一本につき、抗体水溶液2.5mLをのせたのち、PBS6.0/EDTA3.5mLで溶出させた画分(3.5mL)を分取する。この画分を共通操作Aによって濃縮し、共通操作Bを用いて抗体濃度の測定を行ったのちに、PBS6.0/EDTAを用いて10mg/mLに抗体濃度を調整する。
市販のSorbitol(5%)を含む酢酸緩衝液(10mM,pH5.5;本明細書でABSと称する。)のいずれかの緩衝液でNAP-25カラムを平衡化させる。このNAP-25カラムに、抗体-薬物コンジュゲート反応水溶液(約2.5mL)をのせ、メーカー規定の量の緩衝液で溶出させることで、抗体画分を分取する。この分取画分を再びNAP-25カラムにのせ緩衝液で溶出させるゲルろ過精製操作を計2乃至3回繰り返すことで、未結合の薬物リンカーや低分子化合物(トリス(2-カルボキシエチル)ホスフィン塩酸塩(TCEP),N-アセチル-L-システイン(NAC),ジメチルスルホキシド)を除いた抗体-薬物コンジュゲートを得る。
抗体-薬物コンジュゲートにおける結合薬物濃度は、抗体-薬物コンジュゲート水溶液の280nm及び370nmの二波長におけるUV吸光度を測定したのちに下記の計算を行うことで、算出することができる。
A280=AD,280+AA,280=εD,280CD+εA,280CA 式(1)
A370=AD,370+AA,370=εD,370CD+εA,370CA 式(2)
抗体-薬物コンジュゲートにおける抗体一分子あたりの薬物平均結合数は、前述の「(4)-5 共通操作E」に加え、以下の方法を用いる高速液体クロマトグラフィー(HPLC)分析によっても求めることができる。以下に、抗体と薬物リンカーがジスルフィド結合している場合のHPLCによる薬物平均結合数の測定方法を記載する。当業者は、この方法を参照して、抗体と薬物リンカーとの結合様式に依存して適宜、HPLCにより薬物平均結合数を測定し得る。
抗体-薬物コンジュゲート溶液(約1mg/mL、60μL)をジチオトレイトール(DTT)水溶液(100mM、15μL)と混合する。混合物を37℃で30分インキュベートすることで、抗体-薬物コンジュゲートの軽鎖及び重鎖間のジスルフィド結合を切断したサンプルを、HPLC分析に用いる。
HPLC分析を、下記の測定条件にて行う。
検出器:紫外吸光度計(測定波長:280nm)
カラム:ACQUITY UPLC BEH Phenyl(2.1×50mm、1.7μm、130Å;Waters、P/N 186002884)
カラム温度:80℃
移動相A:0.10%トリフルオロ酢酸(TFA)、15%2-プロパノールを含む水溶液
移動相B:0.075%TFA、15%2-プロパノールを含むアセトニトリル溶液
グラジエントプログラム:14%-36%(0分-15分)、36%-80%(15分-17分)、80%-14%(17分-17.01分)、14%(17.01分-25分)
サンプル注入量:10μL
なお、抗体-薬物コンジュゲートの量を確保するために、同様な条件で作製して得られた薬物平均結合数が同程度の複数の抗体-薬物コンジュゲート(例えば±1程度)を混合して新たなロットにすることができる。その場合、薬物平均結合数は混合前の薬物平均結合数の間に収まる。
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖からなる抗体;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖からなる抗体;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖からなる抗体;
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖からなる抗体;又は
(e)重鎖又は軽鎖がN結合型糖鎖付加、O結合型糖鎖付加、アミノ末端のプロセッシング、カルボキシル末端のプロセッシング、脱アミド化、アスパラギン酸の異性化、メチオニンの酸化、トリプトファンの酸化、アミノ末端にメチオニン残基の付加、プロリン残基のアミド化、アミノ末端グルタミンやアミノ末端グルタミン酸のピログルタミン酸化などに代表される翻訳後修飾、及びカルボキシル末端における1つ又は2つのアミノ酸欠失からなる群より選択される1又は2以上の修飾を含む、(a)~(d)からなる群より選択されるいずれか1に記載の抗体。
本発明において、「分子標的薬」とは、がん細胞の特定の分子に作用し、抗がん作用を発揮する薬剤をいう。分子標的薬はその作用機序により分類されるが、本発明において他の薬剤として使用できる分子標的薬としては、例えば、抗体、BCL-2阻害剤、BTK阻害剤等が挙げられる。
内在化率(%)=(37℃ 1~6時間培養後に抗FITCモノクローナル抗体処理したwellのMFI-4℃ 1時間培養後に抗FITCモノクローナル抗体処理したwellのMFIの平均値)/(37℃ 1~6時間培養後に緩衝液処理したwellのMFIの平均値-4℃ 1時間培養後に緩衝液処理した陰性対照のwellのMFIの平均値)×100
ロヘキセン-1-イル]メチル]-1-ピペラジニル]-N-[[4-[[(1R)-3-(4-モルホリニル)-1-[(フェニルチオ)メチル]プロピル]アミノ]-3-[(トリフルオロメチル)スルホニル]フェニル]スルホニル]ベンザミド(ABT-263、WO2009/155386に記載のもの)、テトロカルシンA(Tetrocarcin A)、アンチマイシン(Antimycin)、ゴシポール(Gossypol、BL 193)、オバトクラックス(Obatoclax)、エチル-2-アミノ-6-シクロペンチル-4-(1-シアノ-2-エトキシ-2-オキソエチル)-4Hクロモン-3-カルボキシレート(HA14-1)、オブリメルセン(Oblimersen)、Bak BH3ペプチド、(-)-ゴシポール酢酸(AT-101)、4-[4-[(4’-クロロ[1,1’-ビフェニル]-2-イル)メチル]-1-ピペラジニル]-N-[[4-[[(1R)-3-(ジメチルアミノ)-1-[(フェニルチオ)メチル]プロピル]アミノ]-3-ニトロフェニル]スルホニル]-ベンザミド(ABT-737、CAS852808-04-9)、ナビトクラックス(Navitoclax)、これら薬剤の薬理上許容される塩が挙げられ、好適には、ベネトクラクス又はその薬理上許容される塩である。また、上記薬剤のプロドラッグであり、生体内で上記薬剤へと変化する薬剤も本発明のBCL-2阻害剤に含まれる。
本発明において、「R-CHOP療法に係る薬剤」とは、R-CHOP療法において用いられる5種の薬剤を指し、具体的には、リツキシマブ、シクロホスファミド、ドキソルビシン、ビンクリスチン及びプレドニゾロン(又はプレドニゾン)を指す。本発明において、「R-CHOP療法」とは、がんの化学療法であり、リツキシマブ、シクロホスファミド、ドキソルビシン、ビンクリスチン及びプレドニゾロン(又はプレドニゾン)の5種の薬剤を組み合わせて投与する治療方法である。本発明の好ましい一態様において、他の薬剤はR-CHOP療法に係る薬剤である。
本発明において、「R-CHP療法に係る薬剤」とは、R-CHP療法において用いられる4種の薬剤を指し、具体的には、リツキシマブ、シクロホスファミド、ドキソルビシン及びプレドニゾロン(又はプレドニゾン)を指す。本発明において、「R-CHP療法」とは、がんの化学療法であり、リツキシマブ、シクロホスファミド、ドキソルビシン及びプレドニゾロンの4種の薬剤を組み合わせて投与する治療方法である。本発明の好ましい一態様において、他の薬剤はR-CHP療法に係る薬剤である。
本発明において、「アルキル化剤」とは、がん細胞のDNAをアルキル化し細胞増殖を妨げることにより抗がん作用を発揮する薬剤を指す。アルキル化剤は、上記の性質を有する薬剤であれば特に制限はされないが、例えば、ベンダムスチン(Bendamustine)、シクロホスファミド(Cyclophosphamide、CPA)、イホスファミド(Ifosfamide、IFO)、ダカルバジン(Dacarbazine、DTIC、DIC)、テモゾロミド(Temozolomide、TMZ)、ニムスチン(Nimustine、ACNU)、ブスルファン(Busulfan、BSF、BUS)、プロカルバジン(Procarbazine)、メルファラン(Melphalan、L-PAM)、ラニムスチン(Ranimustine、MCNU)、これら薬剤の薬理上許容される塩が挙げられ、好適には、ベンダムスチン又はその薬理上許容される塩である。また、上記薬剤のプロドラッグであり、生体内で上記薬剤へと変化する薬剤も本発明のアルキル剤に含まれる。
本発明において、「免疫調節薬」とは、免疫の働きを調節し、抗がん作用を発揮する薬剤を指す。免疫調節薬は、上記の性質を有する薬剤であれば特に制限はされないが、例えば、サリドマイド(Thalidomide)、レナリドミド(Lenalidomide、LEN)、これら薬剤の薬理上許容される塩が挙げられ、好適には、レナリドミド又はその薬理上許容される塩である。また、上記薬剤のプロドラッグであり、生体内で上記薬剤へと変化する薬剤も本発明の免疫調節薬に含まれる。
以下、本発明に係る抗CD37抗体-薬物コンジュゲートと他の薬剤とが組み合わされて投与されることを特徴とする医薬組成物及び治療方法等について説明する。
1)-1 抗CD37ヒト化抗体の設計
1)-1-1 抗CD37抗体の可変領域の分子モデリング
ホモロジーモデリングとして公知の方法(Methods in Enzymology,203,121-153(1991))を利用した。市販のタンパク質立体構造解析プログラムDiscoveryStudio(ダッソー・システムズ社製)を用いて、可変領域に対して高い配列相同性を有するProtein data Bank(Nuc.Acid Res.35,D301-D303(2007))に登録されている構造を検索した。ヒットした重鎖、軽鎖及び重鎖と軽鎖の界面構造を鋳型として、三次元モデル構造を作成した。
抗CD37マウスモノクローナル抗体HH1(Smeland E, et al.,Scand J Immunol,21(3),205-214(1985))のヒト化抗体の構築を、CDRグラフティング(Proc.Natl.Acad.Sci.USA 86,10029-10033(1989))として一般的に公知な方法によって実施した。抗CD37ヒトキメラ抗体のフレームワーク領域は、KABAT et al.(Sequences of Proteins of Immunological Interest,5th Ed.Public Health Service National Institutes of Health,Bethesda,MD.(1991))において規定されるヒトκ鎖サブグループ1とヒトγ鎖サブグループ1のコンセンサス配列に、高い相同性を有することから、それらが抗CD37ヒトキメラ抗体の軽鎖と重鎖のアクセプタとしてそれぞれ選択された。また、IMGT(登録商標)(THE INTERNATIONAL IMMUNOGENETICS INFORMATION SYSTEM)において規定されるヒトγ鎖のIGHV1-2*02とIGHJ6*01を抗CD37ヒト化抗体-薬物コンジュゲートの物性の改善を目的に重鎖のアクセプタとして選択した。アクセプタ上に移入すべきドナー残基は、Queen et al.(Proc.Natl.Acad.Sci.USA 86,10029-10033(1989))によって与えられる規準等を参考に、三次元モデルを分析し、各配列に応じて独自に設計した。
設計した抗CD37ヒト化抗体軽鎖の可変領域に、ヒトIgG1のκ鎖定常領域を接続したヒト化抗体軽鎖を設計し、hmAb-L11と命名した。hmAb-L11の全長アミノ酸配列を配列番号2に記載する。配列番号2のアミノ酸配列をコードするヌクレオチド配列を配列番号1に記載する。
抗CD37ヒトキメラ抗体と相同性が最も高いヒトγ鎖サブグループ1のコンセンサス配列へのグラフティングによって、設計した抗CD37ヒト化抗体重鎖の可変領域に、ヒトIgG1のγ鎖定常領域を接続したヒト化抗体重鎖を設計し、hmAb-H11と命名した。hmAb-H11の全長アミノ酸配列を配列番号4に記載する。配列番号4のアミノ酸配列をコードするヌクレオチド配列を配列番号3に記載する。
抗CD37ヒト化抗体-薬物コンジュゲートの物性の改善を目的に設計した抗CD37ヒト化抗体重鎖の可変領域に、ヒトIgG1のγ鎖定常領域を接続したヒト化抗体重鎖をそれぞれ、hmAb-H541、hmAb-H551、hmAb-H11aと命名した。hmAb-H541の全長アミノ酸配列を配列番号6に記載する。配列番号6のアミノ酸配列をコードするヌクレオチド配列を配列番号5に記載する。hmAb-H551の全長アミノ酸配列を配列番号8に記載する。配列番号8のアミノ酸配列をコードするヌクレオチド配列を配列番号7に記載する。hmAb-H11aの全長アミノ酸配列を配列番号10に記載する。配列番号10のアミノ酸配列をコードするヌクレオチド配列を配列番号9に記載する。
1)-2-1 軽鎖発現ベクターpCMA-LKの構築
プラスミドpcDNA3.3-TOPO/LacZ(Thermo Fisher Scientific社製)を制限酵素XbaI及びPmeIで消化して得られる約5.4kbのフラグメントと、配列番号11に示すヒト軽鎖シグナル配列及びヒトκ鎖定常領域をコードするヌクレオチド配列を含むDNA断片をIn-Fusion HD PCRクローニングキット(Takra Bio USA社製)を用いて結合し、pcDNA3.3/LKを作製した。pcDNA3.3/LKからネオマイシン耐性遺伝子を除去することによりpCMA-LKを構築した。
配列番号12に示すhmAb-L11可変領域のヌクレオチド配列のDNA断片を合成した(Thermo Fisher Scientific社製)。In-Fusion HD PCRクローニングキットを用い、実施例1)-2-1で構築したpCMA-LKを制限酵素BsiWIで切断した箇所に合成したDNA断片を挿入することにより、hmAb-L11発現ベクターを構築した。
配列番号13に示す重鎖シグナル配列及びヒト重鎖G1定常領域をコードするヌクレオチド配列を含むDNA断片を合成した(ユーロフィンジェノミクス社製)。このDNA断片を制限酵素XbaI及びPmeIで切断後、アガロースゲル電気泳動により、1.1kbのDNA断片を切り出し、Wizard SV Gel and PCR Clean-Up System(Promega社製)により精製した。実施例1)-2-1で構築したpCMA-LKを制限酵素XbaI及びPmeIで消化して得られる約3.4kbのフラグメントと、1.1kbのDNA断片をLigation High(東洋紡社製)を用いて結合し、pCMA-G1を構築した。
配列番号14に示すhmAb-H11のヌクレオチド配列のDNA断片を合成した。In-Fusion HD PCRクローニングキットを用いて、実施例1)-2-2で構築したpCMA-G1を制限酵素BlpIで切断した箇所に合成したDNA断片を挿入することにより、hmAb-H11発現ベクターを構築した。
配列番号15に示すhmAb-H541のヌクレオチド配列のDNA断片を合成した。In-Fusion HD PCRクローニングキットを用いて、実施例1)-2-2で構築したpCMA-G1を制限酵素BlpIで切断した箇所に合成したDNA断片を挿入することにより、hmAb-H541発現ベクターを構築した。
配列番号16に示すhmAb-H551のヌクレオチド配列のDNA断片を合成した。In-Fusion HD PCRクローニングキットを用いて、実施例1)-2-2で構築したpCMA-G1を制限酵素BlpIで切断した箇所に合成したDNA断片を挿入することにより、hmAb-H551発現ベクターを構築した。
配列番号17に示すhmAb-H11aのヌクレオチド配列のDNA断片を合成した。In-Fusion HD PCRクローニングキットを用いて、実施例1)-2-2で構築したpCMA-G1を制限酵素BlpIで切断した箇所に合成したDNA断片を挿入することにより、hmAb-H11a発現ベクターを構築した。
hmAb-H11を重鎖とし、hmAb-L11を軽鎖とする抗CD37ヒト化抗体をhmAb-H11L11と命名した。hmAb-H541を重鎖とし、hmAb-L11を軽鎖とする抗CD37ヒト化抗体をhmAb-H541L11と命名した。hmAb-H551を重鎖とし、hmAb-L11を軽鎖とする抗CD37ヒト化抗体をhmAb-H551L11と命名した。hmAb-H11aを重鎖とし、hmAb-L11を軽鎖とする抗CD37ヒト化抗体をhmAb-H11aL11と命名した。
FreeStyle 293F細胞(Thermo Fisher Scientific社製)はマニュアルに従い、継代、培養をおこなった。対数増殖期のFreeStyle 293F細胞をFreeStyle293 expression medium (Thermo Fisher Scientific社製)で希釈して2.0×106細胞/mLに調整し、3L Fernbach Erlenmeyer Flask(CORNING社製)に600mL播種した。1.8mgのPolyethyleneimine(Polysciences社製)をOpti-Pro SFM培地(Thermo Fisher Scientific社製)20mLに添加した。次に300μgの重鎖発現ベクターと300μgの軽鎖発現ベクターを20mLのOpti-Pro SFM培地に添加した。Polyethyleneimine/Opti-Pro SFM混合液に、発現ベクター/Opti-Pro SFM混合液を加え穏やかに攪拌し、さらに5分間静置した後にFreeStyle 293F細胞に添加した。37℃、8%CO2インキュベーターで4時間、95rpmで振とう培養後に600mLのEX-CELL VPRO培地(SAFC Biosciences社製)、及び、43.4g/LのBD Recharge CD(BD Biosciences社製)を30mL添加し、37℃、8%CO2インキュベーターで6日間、95rpmで振とう培養して得られた培養上清を孔径0.2μmのボトルトップフィルター(Thermo Fisher Scientific社製)でろ過した。
実施例1)-2-3で得られた培養上清からrProtein Aアフィニティークロマトグラフィーとセラミックハイドロキシアパタイトの2段階工程で抗体を精製した。培養上清をPBSで平衡化し、MabSelectSuReが充填されたカラム(Cytiva社製)にアプライした後に、カラム容量の2倍以上のPBSでカラムを洗浄した。次に2Mアルギニン塩酸塩溶液(pH4.0)で抗体を溶出した。抗体の含まれる画分をSlide-A-Lyzer Dialysis Cassette(Thermo Fisher Scientific社製)を用いて、透析によりPBSにバッファー置換し、5mMリン酸ナトリウム/50mM MES/pH7.0のバッファーで5倍希釈した後に、5mM NaPi/50mM MES/30mM NaCl/pH7.0のバッファーで平衡化したセラミックハイドロキシアパタイトカラム(Bio-Rad Laboratories社製)にアプライした。塩化ナトリウムによる直線的濃度勾配溶出を実施し、抗体の含まれる画分を集めた。その画分をDialysis Cassetteを用いて、透析によりHBSor(25mM ヒスチジン/5% ソルビトール、pH6.0)へバッファー置換した。VIVASPIN 20(分画分子量UF10K、Sartorius Stedim Biotech社製)にて抗体を濃縮し、IgG濃度を20~25mg/mLに調整した。最後にMinisart Plus(Sartorius Stedim Biotech社製)でろ過し、精製サンプルとした。
2)-1 抗体-薬物コンジュゲートの作製(1) hmAb-H11L11-DXd
以下に示される工程によって、hmAb-H11L11-DXdを合成した。
抗体濃度:1.30mg/mL,抗体収量:4.57mg(86%),共通操作Eにて測定された抗体一分子あたりの薬物平均結合数(n):5.6;共通操作Fにて測定された抗体一分子あたりの薬物平均結合数(n):7.5。
以下に示される工程によって、hmAb-H11L11-DXdを合成した。
抗体濃度:1.34mg/mL,抗体収量:4.69mg(88%),共通操作Eにて測定された抗体一分子あたりの薬物平均結合数(n):5.9;共通操作Fにて測定された抗体一分子あたりの薬物平均結合数(n):7.7。
以下に示される工程によって、hmAb-H11L11-DXdを合成した。
抗体濃度:2.23mg/mL,抗体収量:70.29mg(80%),共通操作Eにて測定された抗体一分子あたりの薬物平均結合数(n):5.6;共通操作Fにて測定された抗体一分子あたりの薬物平均結合数(n):7.4。
以下に示される工程によって、hmAb-H541L11-DXd(以下、「抗CD37抗体-薬物コンジュゲート(1)」と表記することがある。)を合成した。
抗体濃度:2.68mg/mL,抗体収量:84.26mg(89%),共通操作Eにて測定された抗体一分子あたりの薬物平均結合数(n):5.9;共通操作Fにて測定された抗体一分子あたりの薬物平均結合数(n):7.8。
以下に示される工程によって、hmAb-H551L11-DXdを合成した。
抗体濃度:2.43mg/mL,抗体収量:85.08mg(85%),共通操作Eにて測定された抗体一分子あたりの薬物平均結合数(n):5.7;共通操作Fにて測定された抗体一分子あたりの薬物平均結合数(n):7.8。
以下に示される工程によって、hmAb-H11aL11-DXdを合成した。
抗体濃度:2.62mg/mL,抗体収量:91.57mg(86%),共通操作Eにて測定された抗体一分子あたりの薬物平均結合数(n):5.7;共通操作Fにて測定された抗体一分子あたりの薬物平均結合数(n):7.6。
抗腫瘍試験は、CD37陽性ヒト腫瘍細胞株の細胞を免疫不全マウスに移植した動物モデルを用いて評価した。4-6週齢で入荷したSCIDマウス(CB17/Icr-Prkdc[scid]/CrlCrlj:日本チャールス・リバー、ジャクソン・ラボラトリー・ジャパン、C.B-17/Icr-scid/scidJcl:日本クレア株式会社)を実験使用前にSPF条件化で3日間以上馴化した。マウスには滅菌した固形飼料(FR-2,Funabashi Farms Co.,Ltd)を給餌し、滅菌した水道水(次亜塩素酸ナトリウム溶液を終濃度3ppmになるように調製)を与えた。移植した腫瘍の長径及び短径を電子式デジタルノギス(CD-15CX,Mitutoyo Corp.)で1週間に2回又は3回測定し、以下に示す計算式により推定腫瘍体積(Estimated Tumor Volume)を算出した。なお、本明細書においては、推定腫瘍体積を単に「腫瘍体積」ということがある。
推定腫瘍体積(Estimated Tumor Volume)(mm3)=1/2×長径(mm)×[短径(mm)]2
抗CD37抗体-薬物コンジュゲート(1)はABS緩衝液(10 mM-Acetate Buffer, 5% Sorbitol, pH5.5)(NACALAI)又はHistidine緩衝液(10 mM Histidine Buffer,pH5.5, 9%(w/v)スクロース,0.03%(w/v)PS80)で希釈し、各実施例に示す用量にて尾静脈内投与した。Rituximab(全薬工業社製)、Bendamustine(シンバイオ製薬社製)、Tafasitamab(MorphoSys社製)、Lenalidomide(AdooQ社製)、Ibrutinib(当業者に周知の方法で合成)、Venetoclax(当業者に周知の方法で合成)は各実施例に示す用法用量で投与した。抗腫瘍試験には、実施例2)-5に記載の方法で作製された抗CD37抗体-薬物コンジュゲート(1)、又は、その作製スケールに合わせて実施例2)-5に記載の方法に軽微な変更を加えた方法で作製された抗CD37抗体-薬物コンジュゲート(1)を用いた。1群あたり5-6匹のマウスを実験に用いた。
CD37陽性ヒトびまん性大細胞型B細胞リンパ腫細胞株OCI-LY7(DSMZ)を50%マトリゲル(コーニング社、PBSで希釈)に懸濁し、1×107cellsを雌SCIDマウスの右側腹部に皮下移植し(Day0)、Day12に無作為に群分けを実施した。群分け実施日に、抗CD37抗体-薬物コンジュゲート(1)及びRituximabをそれぞれ1mg/kg、10mg/kgの用量で尾静脈内投与した。それぞれの単剤と併用群、及びcontrol群として溶媒投与群を設定した。
CD37陽性ヒトびまん性大細胞型B細胞リンパ腫細胞株SU-DHL-4(DSMZ)を50%マトリゲルに懸濁し、1×107cellsを雌SCIDマウスの右側腹部に皮下移植し(Day0)、Day16に無作為に群分けを実施した。それぞれの単剤と併用群、及びcontrol群として溶媒投与群を設定した。Day38におけるTGI及び腫瘍体積の変化率を算出し、表2に示した。
抗CD37抗体-薬物コンジュゲート(1)とTafasitamabとの併用結果を図15に示す。抗CD37抗体-薬物コンジュゲート(1)は3mg/kgの用量で群分け実施時に尾静脈内投与した。Tafasitamabは30mg/kgの用量で群分け実施日から1週間毎に尾静脈内投与した。抗CD37抗体-薬物コンジュゲート(1)投与群、Tafasitamab投与群のDay38におけるTGIはそれぞれ44%、39%に対し、併用群では各単剤群よりも優れた腫瘍増殖抑制効果を示した(TGI, 76%)。
CD37陽性ヒト濾胞性リンパ腫細胞株DOHH-2(DSMZ)を3×106cellsで50%マトリゲルに懸濁し、雌SCIDマウスの右側腹部に皮下移植し(Day0)、Day23に無作為に群分けを実施した。それぞれの単剤と併用群、及びcontrol群として未投与群を設定した。Day44におけるTGI及び腫瘍体積の変化率を算出し、表3に示した。
CD37陽性ヒト慢性リンパ性白血病細胞株JVM-13(ATCC)を50%マトリゲルに懸濁し、1×107cellsを雌SCIDマウスの右側腹部に皮下移植し(Day0)、Day14に無作為に群分けを実施した。それぞれの単剤と併用群、及びcontrol群として未投与群を設定した。Day35におけるTGI及び腫瘍体積の変化率を算出し、表4に示した。
96-well Clear Round Bottom TC-treated Microplate(Corning)に各細胞を5×104cells/wellで播種し、Alexa Fuluor(登録商標)488 Antibody Labeling Kit(Thermo Fisher SCIENTIFIC)を用いて蛍光ラベルした抗CD37抗体-薬物コンジュゲート(1)とRituximab又はHuman IgG1, Myeloma(Merk Millipore、以下「IgG1」)をそれぞれ終濃度1.5μg/mLの濃度になるように添加した。また、陰性対照として、蛍光ラベルした抗体-薬物コンジュゲート(2)とRituximab又はIgG1を添加したwellを調製した。抗体-薬物コンジュゲート(2)は、CD37とは無関係な抗原を認識するヒトIgG1から作製した抗体-薬物コンジュゲートである。各プレートを4℃で1時間、37℃で1~6時間それぞれ培養後、washし、氷冷したPBSあるいは25μg/mLに希釈したAnti-Alexa Fuluor(登録商標)488, rabbit IgG fraction(Thermo Fisher SCIENTIFIC)を添加した。4℃で30分インキュベーション後、2%PFA/PBS添加し、4℃で細胞を固定した。固定後、NovoCyte フローサイトメーターシステムで測定した。各条件2wellずつ培養し、以下の式で算出した内在化率の平均値を示す。MFIはMean Fluorescence Intensityを示す。
OCI-LY7(DSMZ)細胞を用いた評価結果を図28に示す。Rituximab添加群において、IgG1添加群よりも、抗CD37抗体-薬物コンジュゲート(1)の内在化率が顕著に増加した。このことから、Rituximabと抗CD37抗体-薬物コンジュゲート(1)を併用の作用機序として、細胞内への抗CD37抗体-薬物コンジュゲート(1)の取り込み上昇による薬効の増強が示唆された。
SU-DHL-4(DSMZ)細胞を用いた評価結果を図29に示す。Rituximab添加群において、IgG1添加群よりも、抗CD37抗体-薬物コンジュゲート(1)の内在化率が顕著に増加した。このことから、Rituximabと抗CD37抗体-薬物コンジュゲート(1)を併用の作用機序として、細胞内への抗CD37抗体-薬物コンジュゲート(1)の取り込み上昇による薬効の増強が示唆された。
抗腫瘍試験は、実施例3と同様の方法で実施した。抗CD37抗体-薬物コンジュゲート(1)はHistidine緩衝液(10mM Histidine Buffer,pH5.5,9%(w/v)スクロース,0.03%(w/v)PS80)で希釈し、各実施例に示す用量にて尾静脈内投与した。Rituximab(全薬工業社製)、Cyclophosphamide(塩野義製薬社製)、Doxorubicin(協和発酵キリン社製)、Vincristine(日本化薬社製)、Predonisone(WAKO社製)、Obinutuzumab(Roche社製)は各実施例に示す用法用量で投与した。抗腫瘍試験には、実施例2)-5に記載の方法で作製された抗CD37抗体-薬物コンジュゲート(1)、又は、その作製スケールに合わせて実施例2)-5に記載の方法に軽微な変更を加えた方法で作製された抗CD37抗体-薬物コンジュゲート(1)を用いた。1群あたり6匹のマウスを実験に用いた。
CD37陽性ヒトびまん性大細胞型B細胞リンパ腫細胞株OCI-LY7(DSMZ)を50%マトリゲル(コーニング社、PBSで希釈)に懸濁し、1×107cellsを雌SCIDマウスの右側腹部に皮下移植し(Day0)、Day10に無作為に群分けを実施した。それぞれの単剤と併用群、及びcontrol群として未投与群を設定した。Day18におけるTGI及び腫瘍体積の変化率、観察最終日(Day42)におけるCR率を算出し、表5に示した。
CD37陽性ヒト慢性リンパ性白血病細胞株JVM-3(DSMZ)を50%マトリゲルに懸濁し、3×106cellsを雌SCIDマウスの右側腹部に皮下移植し(Day0)、Day13に無作為に群分けを実施した。それぞれの単剤と併用群、及びcontrol群として未投与群を設定した。Day28におけるTGI及び腫瘍体積の変化率を算出し、表6に示した。
CD37陽性ヒト慢性リンパ性白血病細胞株JVM-13(ATCC)を50%マトリゲルに懸濁し、1×107cellsを雌SCIDマウスの右側腹部に皮下移植し(Day0)、Day10に無作為に群分けを実施した。それぞれの単剤と併用群、及びcontrol群として未投与群を設定した。Day25におけるTGI及び腫瘍体積の変化率を算出し、表7に示した。
CD37陽性ヒト慢性リンパ性白血病細胞株JVM-2(DSMZ)、JVM-3(DSMZ)、JVM-13(ATCC)を細胞培養用96-well culture plate(Corning)に播種し、各種濃度に希釈した抗CD37抗体-薬物コンジュゲート(1)を添加した。同時に各種濃度に希釈したIbrutinib(当業者に周知の方法で合成)、Acalabrutinib(アストラゼネカ社から入手した製剤を当業者に周知の方法で精製して調製)若しくはZanubrutinib(BeiGene社から入手した製剤を当業者に周知の方法で精製して調製)(以下併せて「各種BTK阻害剤」という。)のDMSO溶液又はDMSOを添加し(DMSO濃度0.1%以下)、細胞を6日間培養した。培養期間中、いずれも37℃、5%CO2下にて培養した。培養6日後にCelltiter-Glo 2.0 Cell Viability Assay(Promega Corp,)を用いて付属マニュアルに従い反応後、プレートリーダー(Envision2105 XCite マルチモードプレートリーダー、パーキンエルマー、PerkinElmer, Inc.)で各ウェルの発光量を測定した。測定した各種濃度の抗CD37抗体-薬物コンジュゲート(1)及び各種BTK阻害剤添加群(T)およびDMSO添加群(C)の発光量より、次式に基づき細胞増殖抑制率を算出した。
配列番号2:hmAb-L11軽鎖全長のアミノ酸配列
配列番号3:hmAb-H11重鎖をコードするヌクレオチド配列
配列番号4:hmAb-H11重鎖全長のアミノ酸配列
配列番号5:hmAb-H541重鎖をコードするヌクレオチド配列
配列番号6:hmAb-H541重鎖全長のアミノ酸配列
配列番号7:hmAb-H551重鎖をコードするヌクレオチド配列
配列番号8:hmAb-H551重鎖全長のアミノ酸配列
配列番号9:hmAb-H11a重鎖をコードするヌクレオチド配列
配列番号10:hmAb-H11a重鎖全長のアミノ酸配列
配列番号11:軽鎖シグナル配列及びヒトκ軽鎖定常領域をコードするヌクレオチド配列を含むヌクレオチド断片
配列番号12:hmAb-L11軽鎖の可変領域をコードするヌクレオチド配列
配列番号13:重鎖シグナル配列及びヒトG1重鎖定常領域をコードするヌクレオチド配列を含むヌクレオチド断片
配列番号14:hmAb-H11重鎖の可変領域をコードするヌクレオチド配列
配列番号15:hmAb-H541重鎖の可変領域をコードするヌクレオチド配列
配列番号16:hmAb-H551重鎖の可変領域をコードするヌクレオチド配列
配列番号17:hmAb-H11a重鎖の可変領域をコードするヌクレオチド配列
配列番号18:ヒトCD37のアミノ酸配列
配列番号19:ヒト化抗CD37抗体のCDRL1配列
配列番号20:ヒト化抗CD37抗体のCDRL2配列
配列番号21:ヒト化抗CD37抗体のCDRL3配列
配列番号22:ヒト化抗CD37抗体のCDRH1配列
配列番号23:ヒト化抗CD37抗体のCDRH2配列
配列番号24:ヒト化抗CD37抗体のCDRH3配列
Claims (83)
- 抗CD37抗体-薬物コンジュゲートを含む医薬組成物であって、
該抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤が、組み合わされて投与され、
該抗CD37抗体-薬物コンジュゲートは、式
(式中、Aは抗CD37抗体との結合位置を示す)
で示される薬物リンカーと、抗CD37抗体とがチオエーテル結合によって結合した抗CD37抗体-薬物コンジュゲートである、医薬組成物。 - 抗CD37抗体が、以下の(a)乃至(d)からなる群より選択されるいずれか1に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である請求項1に記載の医薬組成物:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域;及び
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。 - 抗CD37抗体が、以下の(a)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である請求項1又は2に記載の医薬組成物:
(a)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号4に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。 - 抗CD37抗体が、以下の(b)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である請求項1又は2に記載の医薬組成物:
(b)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号6に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。 - 抗CD37抗体が、以下の(c)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である請求項1又は2に記載の医薬組成物:
(c)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号8に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。 - 抗CD37抗体が、以下の(d)に記載の重鎖可変領域及び軽鎖可変領域を含む抗体である請求項1又は2に記載の医薬組成物:
(d)配列番号2に示される軽鎖全長アミノ酸配列の21~128番目のアミノ酸配列からなる軽鎖可変領域及び配列番号10に示される重鎖全長アミノ酸配列の20~138番目のアミノ酸配列からなる重鎖可変領域。 - 抗CD37抗体が、以下の(e)乃至(h)からなる群より選択されるいずれか1に記載の重鎖及び軽鎖を含む抗体である、請求項1又は2に記載の医薬組成物:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖;及び
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。 - 抗CD37抗体が、以下の(e)に記載の重鎖及び軽鎖を含む抗体である、請求項1乃至3及び7のいずれか1項に記載の医薬組成物:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。 - 抗CD37抗体が、以下の(f)に記載の重鎖及び軽鎖を含む抗体である、請求項1、2、4及び7のいずれか1項に記載の医薬組成物:
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。 - 抗CD37抗体が、以下の(g)に記載の重鎖及び軽鎖を含む抗体である、請求項1、2、5及び7のいずれか1項に記載の医薬組成物:
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。 - 抗CD37抗体が、以下の(h)に記載の重鎖及び軽鎖を含む抗体である、請求項1、2、6及び7のいずれか1項に記載の医薬組成物:
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。 - 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、請求項1乃至11のいずれか1項に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が2から8個の範囲である、請求項1乃至12のいずれか1項に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、請求項1乃至13のいずれか1項に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が約8個である、請求項1乃至14のいずれか1項に記載の医薬組成物。
- 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、請求項1乃至15のいずれか1項に記載の医薬組成物。
- 抗CD20抗体が、リツキシマブである、請求項16に記載の医薬組成物。
- 抗CD20抗体が、オビヌツズマブである、請求項16に記載の医薬組成物。
- 抗CD19抗体が、タファシタマブである、請求項16乃至18のいずれか1項に記載の医薬組成物。
- BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、請求項16乃至19のいずれか1項に記載の医薬組成物。
- BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、請求項16乃至20のいずれか1項に記載の医薬組成物。
- BTK阻害剤が、アカラブルチニブ又はその薬理上許容される塩である、請求項16乃至20のいずれか1項に記載の医薬組成物。
- BTK阻害剤が、ザヌブルチニブ又はその薬理上許容される塩である、請求項16乃至20のいずれか1項に記載の医薬組成物。
- アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、請求項1乃至23のいずれか1項に記載の医薬組成物。
- 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、請求項1乃至24のいずれか1項に記載の医薬組成物。
- 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、請求項1乃至15のいずれか1項に記載の医薬組成物。
- 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、請求項1乃至15のいずれか1項に記載の医薬組成物。
- 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、請求項1乃至15のいずれか1項に記載の医薬組成物。
- 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、請求項1乃至15のいずれか1項に記載の医薬組成物。
- 他の薬剤が、R-CHOP療法に係る薬剤である、請求項1乃至15のいずれか1項に記載の医薬組成物。
- 他の薬剤が、R-CHP療法に係る薬剤である、請求項1乃至15のいずれか1項に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、請求項1乃至31のいずれか1項に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、請求項1乃至31のいずれか1項に記載の医薬組成物。
- びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、請求項1乃至33のいずれか1項に記載の医薬組成物。
- びまん性大細胞型B細胞リンパ腫の治療のための、請求項34に記載の医薬組成物。
- 慢性リンパ性白血病の治療のための、請求項34に記載の医薬組成物。
- 濾胞性リンパ腫の治療のための、請求項34に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートを含む医薬組成物であって、
該抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤が、組み合わされて投与され、
該抗CD37抗体-薬物コンジュゲートは、式
(式中、抗体は抗CD37抗体であり、薬物リンカーは抗体とチオエーテル結合によって結合しており、nは1抗体あたりの薬物リンカーの平均結合数を示す)
で示される抗CD37抗体-薬物コンジュゲートである、医薬組成物。 - 抗CD37抗体が、以下の(e)に記載の重鎖及び軽鎖を含む抗体である、請求項38に記載の医薬組成物:
(e)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号4に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。 - 抗CD37抗体が、以下の(f)に記載の重鎖及び軽鎖を含む抗体である、請求項38に記載の医薬組成物:
(f)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号6に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。 - 抗CD37抗体が、以下の(g)に記載の重鎖及び軽鎖を含む抗体である、請求項38に記載の医薬組成物:
(g)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号8に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。 - 抗CD37抗体が、以下の(h)に記載の重鎖及び軽鎖を含む抗体である、請求項38に記載の医薬組成物:
(h)配列番号2に示される軽鎖全長アミノ酸配列の21~234番目のアミノ酸配列からなる軽鎖及び配列番号10に示される重鎖全長アミノ酸配列の20~468番目のアミノ酸配列からなる重鎖。 - 抗CD37抗体の、重鎖カルボキシル末端のリシン残基が欠失している、請求項38乃至42のいずれか1項に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が7から8個の範囲である、請求項38乃至43のいずれか1項に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートにおける1抗体あたりの薬物リンカーの平均結合数が約8個である、請求項38乃至44のいずれか1項に記載の医薬組成物。
- 分子標的薬が、抗CD20抗体、抗CD19抗体、BCL-2阻害剤及びBTK阻害剤よりなる群から選択される一つ又は二つ以上の薬剤である、請求項38乃至45のいずれか1項に記載の医薬組成物。
- 抗CD20抗体が、リツキシマブである、請求項46に記載の医薬組成物。
- 抗CD20抗体が、オビヌツズマブである、請求項46に記載の医薬組成物。
- 抗CD19抗体が、タファシタマブである、請求項46乃至48のいずれか1項に記載の医薬組成物。
- BCL-2阻害剤が、ベネトクラクス又はその薬理上許容される塩である、請求項46乃至49のいずれか1項に記載の医薬組成物。
- BTK阻害剤が、イブルチニブ又はその薬理上許容される塩である、請求項46乃至50のいずれか1項に記載の医薬組成物。
- BTK阻害剤が、アカラブルチニブ又はその薬理上許容される塩である、請求項46乃至50のいずれか1項に記載の医薬組成物。
- BTK阻害剤が、ザヌブルチニブ又はその薬理上許容される塩である、請求項46乃至50のいずれか1項に記載の医薬組成物。
- アルキル化剤が、ベンダムスチン又はその薬理上許容される塩である、請求項38乃至53のいずれか1項に記載の医薬組成物。
- 免疫調節薬が、レナリドミド又はその薬理上許容される塩である、請求項38乃至54のいずれか1項に記載の医薬組成物。
- 他の薬剤が、リツキシマブ及びベンダムスチン又はその薬理上許容される塩の組み合わせである、請求項38乃至45のいずれか1項に記載の医薬組成物。
- 他の薬剤が、タファシタマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、請求項38乃至45のいずれか1項に記載の医薬組成物。
- 他の薬剤が、リツキシマブ及びレナリドミド又はその薬理上許容される塩の組み合わせである、請求項38乃至45のいずれか1項に記載の医薬組成物。
- 他の薬剤が、リツキシマブ及びベネトクラクス又はその薬理上許容される塩の組み合わせである、請求項38乃至45のいずれか1項に記載の医薬組成物。
- 他の薬剤が、R-CHOP療法に係る薬剤である、請求項38乃至45のいずれか1項に記載の医薬組成物。
- 他の薬剤が、R-CHP療法に係る薬剤である、請求項38乃至45のいずれか1項に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、請求項38乃至61のいずれか1項に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、請求項38乃至61のいずれか1項に記載の医薬組成物。
- びまん性大細胞型B細胞リンパ腫、濾胞性リンパ腫、マントル細胞リンパ腫、辺縁体リンパ腫、バーキットリンパ腫、慢性リンパ性白血病、末梢性T細胞リンパ腫、皮膚T細胞リンパ腫、骨髄異形成症候群及び急性骨髄性白血病からなる群より選択される少なくとも一つの治療のための、請求項38乃至63のいずれか1項に記載の医薬組成物。
- びまん性大細胞型B細胞リンパ腫の治療のための、請求項64に記載の医薬組成物。
- 慢性リンパ性白血病の治療のための、請求項64に記載の医薬組成物。
- 濾胞性リンパ腫の治療のための、請求項64に記載の医薬組成物。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、組み合わされて治療を必要とする個体に投与されることを特徴とする治療方法であって、該抗CD37抗体-薬物コンジュゲート及び該他の薬剤が請求項1乃至31及び請求項38乃至61のいずれか1項に記載される、治療方法。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、請求項68に記載の治療方法。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、請求項68に記載の治療方法。
- 請求項34又は64に記載される疾患からなる群より選択される少なくとも一つの治療のための、請求項68乃至70のいずれか1項に記載の治療方法。
- 分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤と、組み合わされて投与されることにより、疾患を治療するための医薬の製造のための抗CD37抗体-薬物コンジュゲートの使用であって、該抗CD37抗体-薬物コンジュゲート及び該他の薬剤が請求項1乃至31及び請求項38乃至61のいずれか1項に記載される、使用。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、請求項72に記載の使用。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、請求項72に記載の使用。
- 請求項34又は64に記載される疾患からなる群より選択される少なくとも一つの治療のための、請求項72乃至74のいずれか1項に記載の使用。
- 組み合わせでの投与のための、抗CD37抗体-薬物コンジュゲート及び分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤を含有する医薬製品であって、該抗CD37抗体-薬物コンジュゲート及び該他の薬剤が請求項1乃至31及び請求項38乃至61のいずれか1項に記載される、医薬製品。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、請求項76に記載の医薬製品。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、請求項76に記載の医薬製品。
- 請求項34又は64に記載される疾患からなる群より選択される少なくとも一つの治療のための、請求項76乃至78のいずれか1項に記載の医薬製品。
- 疾患の治療のための、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤と組み合わせた抗CD37抗体-薬物コンジュゲートの使用であって、該抗CD37抗体-薬物コンジュゲート及び該他の薬剤が請求項1乃至31及び請求項38乃至61のいずれか1項に記載される、使用。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、それぞれ別異の製剤に有効成分として含有され、同時に又は異なる時間に投与されることを特徴とする、請求項80に記載の使用。
- 抗CD37抗体-薬物コンジュゲートと、分子標的薬、R-CHOP療法に係る薬剤、R-CHP療法に係る薬剤、アルキル化剤及び免疫調節薬よりなる群から選択される一つ又は二つ以上の他の薬剤とが、同一の製剤に有効成分として含有される、請求項80に記載の使用。
- 請求項34又は64に記載される疾患からなる群より選択される少なくとも一つの治療のための、請求項80乃至82のいずれか1項に記載の使用。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025083205A1 (en) * | 2023-10-18 | 2025-04-24 | Debiopharm International S.A. | Drug combination comprising anti-cd37 antibody maytansine conjugate and bcl2 inhibitor or pi3k inhibitor |
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