WO2024216391A1 - Method of diagnosis and treatment of pancreatic cancer - Google Patents
Method of diagnosis and treatment of pancreatic cancer Download PDFInfo
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- WO2024216391A1 WO2024216391A1 PCT/CA2024/050507 CA2024050507W WO2024216391A1 WO 2024216391 A1 WO2024216391 A1 WO 2024216391A1 CA 2024050507 W CA2024050507 W CA 2024050507W WO 2024216391 A1 WO2024216391 A1 WO 2024216391A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/574—Immunoassay; Biospecific binding assay; Materials therefor for cancer
- G01N33/57407—Specifically defined cancers
- G01N33/57438—Specifically defined cancers of liver, pancreas or kidney
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
- G01N2030/8809—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample
- G01N2030/8813—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample biological materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
- G01N2030/8809—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample
- G01N2030/8813—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample biological materials
- G01N2030/8831—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample biological materials involving peptides or proteins
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/72—Mass spectrometers
Definitions
- the present disclosure relates generally to the field of diagnosing and treating pancreatic cancer.
- Pancreatic cancer has poor prognosis. This is often because early detection is difficult. Patients usually have no symptoms until the cancer is untreatable and/or has spread throughout the body. Moreover, tumours are difficult to visualize since they are located deep within the body.
- pancreatic cancer In addition, few drugs are available to treat pancreatic cancer. In the past few years, numerous targeted agents have been tested, such as ECFR inhibitors (erlotinib), VEGF and VEGFR inhibitors, phosphoinositide-3-kinase-mTOR pathway inhibitors, Janus kinase inhibitors, and Ras pathway inhibitors. Unfortunately, most of these agents were ineffective at treating the disease (Zhu et al., 2018, “Pancreatic cancer: challenges and opportunities”, BMC Medicine 16(214)).
- ECFR inhibitors erlotinib
- VEGF vascular endothelial growth factor
- VEGFR inhibitors phosphoinositide-3-kinase-mTOR pathway inhibitors
- Janus kinase inhibitors Janus kinase inhibitors
- Ras pathway inhibitors Unfortunately, most of these agents were ineffective at treating the disease (Zhu et al., 2018, “Pancreatic cancer: challenges and opportunities”, BMC Medicine 16(214)).
- pancreatic cancer is not only difficult to detect early, but remains one of the most untreatable forms of cancer in humans.
- pancreatic cancer there is a need for an improved method for the diagnosis of pancreatic cancer, and/or to determine a subject’s predisposition for developing pancreatic cancer, and treatment thereof.
- stage 1 or 2 early stage pancreatic cancer.
- the present disclosure provides a method for diagnosing and treating or causing the treating of pancreatic cancer.
- a new proteomic profile for pancreatic cancer is used to diagnose and treat and/or ameliorate pancreatic cancer.
- the treatment comprises surgery to remove the tumour or optionally administering an anti-cancer therapeutic agent, e.g., for reducing pancreatic cancer progression.
- the new proteomic profile is used to monitor disease progression and/or remission.
- the proteomic profile for pancreatic cancer comprises at least one, at least two, at least three, at least four, at least five, at least six or at least seven pancreatic cancer-related proteins selected from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor or C6 complement factor and fibronectin.
- pancreatic cancer-related proteins selected from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor or C6 complement factor and fibronectin.
- a subject is diagnosed as having pancreatic cancer by determining whether one, two, three, four, five, six, seven or more of the proteins are elevated, such as elevated by at least 1.2 times, 1.4 times, 1.6 times, 1.8 times, 2.0 times or more relative to a level that is considered normal (e.g., a baseline) in a subject(s) without pancreatic cancer.
- the proteomic profile comprising a plurality of the foregoing proteins or peptide fragments thereof is elevated in a subject suffering from early-stage pancreatic cancer (stage 1) as compared to a pancreatic cancer- negative individual.
- stage 1 early-stage pancreatic cancer
- the levels of the pancreatic cancer-related proteins are elevated in the circulation of the subject having pancreatic cancer as compared to an individual without pancreatic cancer.
- the levels of pancreatic cancer-related proteins in circulation of the subject are monitored as described herein and if changes over time are detected, the subject is identified for further assessment.
- the levels of the pancreatic cancer-related proteins are altered in the blood (e.g., serum, plasma), body fluids (e.g., cerebrospinal fluid, pleural fluid, amniotic fluid, semen, or saliva), urine, and/or feces of the subject having pancreatic cancer.
- body fluids e.g., cerebrospinal fluid, pleural fluid, amniotic fluid, semen, or saliva
- the treatment method may further comprise a step or steps of obtaining a biopsy to positively confirm the presence of pancreatic cancer followed by surgery and/or administration of a pancreatic cancer drug.
- the treatment comprises a combination of a biopsy and surgery after a positive diagnosis.
- a method for treating pancreatic cancer in a subject comprising: (i) receiving a proteomic profile from a subject, the proteomic profile previously obtained by: (a) providing a biological sample obtained from the subject; (b) measuring concentration levels of one or a combination of, at least two, at least three, at least four or at least five pancreatic cancer-related proteins, or peptide fragment thereof, selected from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin from the obtained sample; (c) comparing the concentration levels of the pancreatic cancer-related proteins, or peptide fragments thereof, from the obtained sample to the concentration levels of reference pancreatic cancer-related proteins or
- a method for diagnosing and treating pancreatic cancer in a subject comprising: (a) providing a biological sample obtained from the subject; (b) measuring concentration levels of one or a combination of, at least two, at least three, at least four or at least five pancreatic cancer-related proteins, or peptide fragment thereof, selected from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin from the obtained sample; (c) comparing the concentration levels of the pancreatic cancer-related proteins, or peptide fragments thereof, from the obtained sample to the concentration levels of reference pancreatic cancer-related proteins or peptide fragments thereof from a pancreatic cancer-negative reference value and/
- a method for diagnosing and treating pancreatic cancer in a subject comprising: (a) providing a biological sample obtained from the subject; (b) measuring or having measured in a spectroscopy unit the concentration levels of a combination of pancreatic cancer-related proteins, or peptide fragments thereof, selected from selected from apolipoprotein Al; apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin from the obtained sample; (c) comparing or having compared concentration levels of the pancreatic cancer-related proteins, or peptide fragments thereof, as determined in the spectroscopy unit to the concentration levels of reference pancreatic cancer- related proteins, or peptide fragments thereof, from a pancreatic
- the pancreatic cancer treatment comprises lowering the blood levels of one or more of the pancreatic cancer-related proteins or peptide fragments thereof in the subj ect diagnosed as having the pancreatic cancer.
- the adjustment of the blood levels of one or more of the pancreatic cancer-related proteins or peptide fragments thereof in the subject occurs until the pancreatic cancer-related proteins or peptide fragments thereof are lowered to a predetermined level in the subject.
- the identifying step occurs upon determination that the concentration levels of at least one, at least two, at least three, at least four or at least five of the pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample are elevated by about 10% or more, 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration levels of the reference pancreatic cancer-related proteins or peptide fragments thereof from the pancreatic cancer-negative reference value and/or relative to concentrations levels in a sample obtained previously from the subject.
- measuring the concentration levels of the pancreatic cancer-related proteins or peptide fragments comprises measuring at least one, at least two, least three, or each one of L-selectin, tetranectin, phospholipid transfer protein and fibronectin. [0018] According to any one of the foregoing aspects or embodiments, the concentration level of at least tetranectin is measured.
- the obtained sample is blood or urine.
- the obtained sample is serum or plasma.
- the obtained sample is urine.
- the pancreatic cancer- related proteins or peptide fragments thereof are measured by a spectroscopic technique, wherein the spectroscopic technique is selected from the group consisting of liquid chromatography, gas chromatography, liquid chromatography mass spectrometry, gas chromatography mass spectrometry, high performance liquid chromatography mass spectrometry, capillary electrophoresis mass spectrometry, nuclear magnetic resonance spectrometry (NMR), raman spectroscopy and infrared spectroscopy.
- the spectroscopic technique is selected from the group consisting of liquid chromatography, gas chromatography, liquid chromatography mass spectrometry, gas chromatography mass spectrometry, high performance liquid chromatography mass spectrometry, capillary electrophoresis mass spectrometry, nuclear magnetic resonance spectrometry (NMR), raman spectroscopy and infrared spectroscopy.
- the spectroscopic technique comprises mass spectrometry.
- the comparison of the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof or peptide fragments thereof from the obtained sample to the concentration levels of the reference values comprises using multivariate statistical analysis.
- the multivariate statistical analysis is selected from principal component analysis (PCA), or partial least squares projects to latent structures discriminant analysis (PLS-DA).
- PCA principal component analysis
- PLS-DA latent structures discriminant analysis
- a method of monitoring protein or peptide fragments in a subject and treating pancreatic cancer in a subject comprising: (a) providing a first biological sample obtained from the subject at a first time point; (b) assessing a first pancreatic cancer-related proteomic profile by measuring concentration levels of at least one, at least two, at least three, at least four or at least five pancreatic cancer-related proteins, or peptide fragments thereof, selected from pancreatic cancer-related proteins or peptide fragments thereof selected from apolipoprotein Al; apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin from the first biological sample; (c) comparing the first pancreatic cancer-related proteomic profile
- the period of time between the first time and the second time points is at least 1 month, at least 2 months, at least 3 months or at least 6 months.
- measuring the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the first and/or second biological samples comprises measuring at least one, at least two, least three, or each one of L-selectin, tetranectin, phospholipid transfer protein and fibronectin.
- the concentration level of at least tetranectin is measured.
- the first sample, the second sample, or both are blood or urine or wherein both samples are the same specimen type and are selected from serum, plasma or urine.
- a kit for diagnosis of pancreatic cancer comprising: (a) a detector configured to detect concentration levels of at least one, at least two, at least three, at least four or at least five pancreatic cancer-related proteins, or peptide fragments thereof, selected from apolipoprotein Al; apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin obtained from a biological sample; (b) a composition comprising apolipoprotein Al; apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronect
- the detector comprises a multi -proteomic detector configured to measure the levels of the pancreatic cancer- related proteins, or peptide fragments thereof, comprising the apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin.
- a multi -proteomic detector configured to measure the levels of the pancreatic cancer- related proteins, or peptide fragments thereof, comprising the apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibro
- the detector is configured to measure the concentration levels of the pancreatic cancer-related proteins or peptide fragments comprising at least one, at least two, least three, or each one of L-selectin, tetranectin, phospholipid transfer protein and fibronectin.
- the detector is configured to measure at least tetranectin.
- a computer-implemented method for processing a biological sample of a subject, diagnosing pancreatic cancer and treating the pancreatic cancer comprising: (a) receiving a biological sample obtained from the subject; (b) processing the sample in a spectroscopy unit directly or wirelessly linked to a processing device, the processing device having memory for storing measurement data from the spectroscopy unit; (c) in the spectroscopy unit, measuring levels of least one, at least two, at least three, at least four or at least five pancreatic cancer-related proteins, or peptide fragments thereof, selected from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor or C6 complement factor and fibronectin
- the displayed result is included in a user interface that is a dashboard.
- the displayed result is part of multi-omic information displayed on the user interface.
- the spectroscopy unit comprises a detector or is operatively connected to a detector that is configured to measure the concentration levels of the pancreatic cancer-related proteins or peptide fragments optionally configured to measure at least one, at least two, least three, or each one of L-sel ectin, tetranectin, phospholipid transfer protein and fibronectin.
- the detector is configured to measure at least tetranectin.
- a method for diagnosing and treating pancreatic cancer in a subject comprising: (a) providing a biological sample obtained from the subject; (b) measuring concentration levels of at least one, at least two, at least three, at least four or at least five pancreatic cancer-related proteins or peptide fragments thereof selected from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L- selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor or C6 complement factor and fibronectin; (c) comparing the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample to the concentration levels of reference pancreatic cancer-related proteins or peptide fragments thereof from a pancreatic cancernegative sample and/or from a sample obtained at an earlier time point from the subject
- measuring the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the first and/or second biological samples comprises measuring at least one, at least two, least three, or each one of L-selectin, tetranectin, phospholipid transfer protein and fibronectin.
- the concentration level of at least tetranectin is measured.
- a method for diagnosing and treating pancreatic cancer in a subject comprising: (a) providing a first biological sample obtained from the subject; (b) at a first time point, measuring concentration levels of at least one, at least two, at least three, at least four or at least five pancreatic cancer-related proteins or peptide fragments thereof selected from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor or C6 complement factor and fibronectin from the obtained sample; (c) comparing the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample to the concentration levels of reference pancreatic cancer-related proteins or peptide fragments thereof from a pancreatic cancer- negative sample and
- the identifying step (f) occurs upon determination that the concentration levels of at least one, at least two, at least three, at least four, or at least five of the pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample are elevated by about 10% or more, about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration levels of the reference pancreatic cancer-related proteins or peptide fragments thereof from the pancreatic cancer-negative sample.
- the identifying step (f) occurs upon determination that the concentration levels of at least three, at least four, or at least five of the pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample are elevated by about 10% or more, about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more or about 70% or more relative to the concentration levels of the reference pancreatic cancer-related proteins or peptide fragments thereof from the pancreatic cancer-negative sample.
- measuring the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the first and/or second biological samples comprises measuring at least one, at least two, least three, or each one of L-selectin, tetranectin, phospholipid transfer protein and fibronectin.
- the concentration level of at least tetranectin is measured.
- the obtained sample is blood or urine, or is serum, plasma or urine.
- the pancreatic cancer-related proteins or peptide fragments thereof are measured by a spectroscopic technique, wherein the spectroscopic technique is selected from the group consisting of liquid chromatography, gas chromatography, liquid chromatography mass spectrometry, gas chromatography mass spectrometry, high performance liquid chromatography mass spectrometry, capillary electrophoresis mass spectrometry, nuclear magnetic resonance spectrometry (NMR), raman spectroscopy, and infrared spectroscopy.
- the spectroscopic technique is selected from the group consisting of liquid chromatography, gas chromatography, liquid chromatography mass spectrometry, gas chromatography mass spectrometry, high performance liquid chromatography mass spectrometry, capillary electrophoresis mass spectrometry, nuclear magnetic resonance spectrometry (NMR), raman spectroscopy, and infrared spectroscopy.
- the comparison of the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample to the concentration levels of the reference pancreatic cancer-related proteins or peptide fragments thereof from the pancreatic cancer-negative sample comprises multivariate statistical analysis.
- measuring the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the second biological sample comprises measuring at least one, at least two, least three, or each one of L-selectin, tetranectin and phospholipid transfer protein and wherein if the measured levels of L-selectin, tetranectin and/or phospholipid transfer protein in the second biological sample, when compared to respective concentration levels measured at the first time point, are elevated by at least 10%, 15%, 20% or 25%, the subject is identified as having pancreatic cancer or as having a risk of having pancreatic cancer.
- the concentration level of at least fibronectin is measured and wherein if the measured level of fibronectin in the second biological sample, when compared to a respective concentration level measured at the first time point, is elevated or decreased by at least 10%, 15%, 20% or 25%, the subject is identified as having pancreatic cancer or as having a risk of having pancreatic cancer.
- a proteolyzed sample for use in mass spectrometry to diagnose pancreatic cancer in a subject comprising one or a combination of peptide fragments of apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin.
- a proteolyzed sample for use in mass spectrometry to diagnose pancreatic cancer in a subject comprising a peptide fragment of L- selectin, tetranectin, phospholipid transfer protein and/or fibronectin.
- the method further comprises obtaining a biopsy sample from the subject identified as having a risk of having pancreatic cancer after measurement of the pancreatic cancer proteins or fragments thereof and if cancerous cells are identified in the sample, surgically removing cancerous tissue from the pancreas and/or bile duct(s) of the subject.
- levels of the tetranectin increase over time as measured at two or more time points within in a 1 -month to 3 -year time period or are elevated at a single time point over a control, thereby identifying the subject as having pancreatic cancer (e.g., stage 1).
- Such embodiment may further comprise measuring levels of at least one of L-selectin and phospholipid transfer protein, and wherein the levels of at least one of L-selectin and phospholipid transfer protein increase over time as measured at two or more time points within a 1 -month to 3 -year time period or are elevated at a single time point over a control.
- the method or kit further comprises measuring fibronectin. In some embodiments, the method further comprises measuring at least one of apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor or a combination thereof.
- pancreatic cancer-negative with reference to a sample, generally refers to a biological sample from an individual that does not suffer from pancreatic cancer or is not predisposed to developing pancreatic cancer.
- baseline or “control” generally refers to a value corresponding to a concentration of a protein or peptide fragment thereof in an individual that does not suffer from pancreatic cancer or is not predisposed to developing pancreatic cancer or a value derived from a population of such individuals and/or from published data.
- pancreatic cancer treatment regime generally refers to an intervention made in response to a subject suffering from pancreatic cancer.
- the aim of the regime may include, but is not limited to, one or more of the alleviation or prevention of symptoms, slowing or stopping the progression or worsening of pancreatic cancer and causing the remission of pancreatic cancer.
- pancreatic cancer treatment regime refers to therapeutic treatment (e.g., changing pancreatic cancer-related proteomic levels) by one or more suitable therapeutic agents administered to a patient, such as chemotherapeutic agents.
- pancreatic cancer-related proteome or “proteomic profile” generally refers to a profile of proteins associated with pancreatic cancer comprising a plurality of proteins comprising at least one of apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin or a combination thereof.
- the phrase “reference value derived therefrom” in connection with comparing the level of a protein in a sample with a reference refers to a value that is derived from a sample or from a plurality of subjects that do not have pancreatic cancer.
- the reference value may be derived from statistical data previously collected from subjects that do not have pancreatic cancer.
- the terms “preventing” and “prevention” are used interchangeably and generally refer to any activity that leads to a reduction in risk of developing pancreatic cancer in the subject.
- the term “subject” generally refers to a vertebrate, such as a mammal.
- the term “mammal” is defined as individual belonging to the class Mammalia. In some embodiments, the subject is human.
- treating generally refers to an intervention made in response to pancreatic cancer or associated symptoms thereof.
- the aim of treatment may include, but is not limited to, one or more of the alleviation or prevention of pancreatic cancer, slowing or stopping the progression or worsening of pancreatic cancer and the remission of pancreatic cancer.
- treatment refers to surgery and/or administration of a therapeutic agent for treatment of pancreatic cancer. Such treatment may further comprise radiation treatment.
- pancreatic cancer drug refers to any therapeutic agent or prodrug used to treat or reduce progression of pancreatic cancer.
- the drug may be included in a pharmaceutical formulation and optionally comprises excipients.
- biopsy refers to a composition comprising cells and/or fluids, without limitation, from one or more of the duodenum, bile ducts, pancreas and/or pancreatic duct of the subject.
- the term “computer-implemented” with reference to a method or process means that all or a significant portion of the steps of the method are carried out by an electronic data processor and/or by distributed computing, such as cloud computing.
- the modelling data is obtained from a pancreatic cancer test and control group data, each group data subjected to a computer-implemented calculation comprising at least one of: a computer-generated Receiver Operating Characteristic (ROC) curve analysis, a Principal Component Analysis (PCA) plot, and a latent structures discriminant analysis (PLS-DA) model and/or a Variable Importance of Projection (VIP) plot and thereby obtaining a set of at least 2, 3, 4, 5, 6, 7, 8, 9, 10 or more biomarkers identified as contributing to the diagnosis, development or regression of pancreatic cancer relative to other biomarkers measured.
- ROC Receiver Operating Characteristic
- PCA Principal Component Analysis
- VIP Variable Importance of Projection
- the disclosure is based on identifying a subject as having a risk of having pancreatic cancer by determining whether a biological sample from the patient has elevated or reduced levels of a novel combination of proteins or fragments thereof identified by the inventors as being predictive of the presence of pancreatic cancer.
- the identified subject is then subjected to one or more steps comprising obtaining a biopsy (e.g., cells and/or fluids from the duodenum, bile duct(s), pancreas and/or pancreatic duct) and analyzing the biopsy for the presence of cancerous cells.
- a biopsy e.g., cells and/or fluids from the duodenum, bile duct(s), pancreas and/or pancreatic duct
- the biomarkers are previously selected from proteomic profiles obtained from computer modelling. In some non -limiting examples, at least 2, 3, 4, or 5 proteomic biomarkers are measured. In further embodiments, up to 100, 95, 90, 85, 80, 75, 70, 65, 60, 55, 50, 45, 40, 35, 30, 25 or 20 proteomic biomarkers are identified based on the computer modelling. Optionally, this includes selecting metabolomic biomarkers in addition to proteomic biomarkers.
- the biomarkers are selected from computer modelling based on assigning a weight to biomarkers in a proteomic profile, and optionally further based on a metabolic profile, the weight based on the ability of the marker to diagnose and/or assess pancreatic cancer progression.
- the present disclosure relates to methods for (e.g., early) diagnosis and treatment of pancreatic cancer, and any associated symptoms, in a subject.
- the disclosure in some embodiments provides, at least in part, the identification of proteins or peptide fragments thereof that provide etiological data related to pancreatic cancer and provides an opportunity for objective protein-based or peptide-based diagnosis of pancreatic cancer that can lead to more effective therapy.
- proteomic profiling optionally in combination with other profiling (e.g., genomic and/or metabolomic profiling), can provide an approach towards a better understanding of pancreatic cancer and the development of diagnostic tests that aid in individualized treatment decisions.
- the method comprises a proteomic analysis within a multi-omic analysis, which includes a proteomic and a genomic and/or metabolomic analysis.
- Multi-omic based analysis has the advantage to identify biomarker profiles derived from an individual’s inherited genes as well as capture the interactions of the individual’s current lifestyle behaviors (e.g., smoking, alcohol consumption, sleep behaviours, physical activity and the like), gut microbiome, dietary, and environmental factors that contribute to the unique protein profile of a subject with pancreatic cancer.
- Combining early diagnoses and a pancreatic cancer treatment regime has the further advantage of increased positive therapeutic outcomes. Described herein are methods that provide for the identification of new proteomic profiles among subjects with pancreatic cancer that serve to diagnose and treat those subjects. Therefore, the present disclosure provides an advancement in the art.
- a new proteomic profile for pancreatic cancer is identified in a subject having pancreatic cancer.
- the proteomic profile for pancreatic cancer comprises at least one, at least two, at least three, at least four, at least five, at least six or at least seven pancreatic cancer-related proteins selected from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor or C6 complement factor and fibronectin.
- the protein, apolipoprotein Al is identified herein as a biomarker of pancreatic cancer and in some embodiments is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference apolipoprotein Al in pancreatic cancer-negative individuals. In some embodiments, an elevated level of apolipoprotein Al of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer. Apolipoprotein Al is currently believed to be a tumor suppressor. Apolipoprotein Al (ApoAl) is a protein involved in lipid metabolism and has been studied for its potential role in pancreatic cancer.
- the protein, apolipoprotein A-II is identified herein as a biomarker of pancreatic cancer and in some embodiments is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference apolipoprotein A-II in pancreatic cancer-negative individuals. In some embodiments, an elevated level of apolipoprotein A-II of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- the protein, plasma protease Cl inhibitor may be measured as a biomarker of pancreatic cancer.
- the plasma protease Cl inhibitor may be elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference plasma protease Cl inhibitor in pancreatic cancer-negative individuals.
- an elevated level of plasma protease Cl inhibitor of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- Plasma protease inhibitor 1 is a protein involved in the regulation of the complement system, which is a component of the immune system.
- L-selectin may be measured as a biomarker of pancreatic cancer.
- L-selectin is a cell adhesion molecule that is expressed on the surface of immune cells and is involved in the migration of these cells to sites of inflammation.
- L-selectin is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference L-selectin in pancreatic cancer-negative individuals.
- an elevated level of L-selectin of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- the protein, tetranectin may be measured as a biomarker of pancreatic cancer.
- Tetranectin also known as plasminogen activator inhibitor-tissue factor pathway inhibitor-2, is a protein involved in blood coagulation and has also been shown to have anti-tumor properties. Tetranectin is produced by various cell types in the body, including endothelial cells, platelets, and monocytes. It is also found in various tissues, including the liver, lung, and placenta.
- tetranectin elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference tetranectin in pancreatic cancer-negative individuals.
- an elevated level of tetranectin of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- the protein, phospholipid transfer protein may be measured as a biomarker of pancreatic cancer.
- phospholipid transfer protein is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference phospholipid transfer protein in pancreatic cancer-negative individuals.
- an elevated level of phospholipid transfer protein of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- the protein, Apolipoprotein M may be measured as a biomarker of pancreatic cancer and in some embodiments is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference Apolipoprotein M in pancreatic cancernegative individuals. In some embodiments, an elevated level of Apolipoprotein M of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- Cis complement factor may be measured as a biomarker of pancreatic cancer and in some embodiments is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference Cis complement factor in pancreatic cancer-negative individuals. In some embodiments, an elevated level of Cis complement factor of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- C4b complement factor may be measured as a biomarker of pancreatic cancer and in some embodiments is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference C4b complement factor in pancreatic cancer-negative individuals. In some embodiments, an elevated level of C4b complement factor of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- C6 complement factor may be measured as a biomarker of pancreatic cancer and in some embodiments is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference C6 complement factor in pancreatic cancer-negative individuals. In some embodiments, an elevated level of C6 complement factor of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- the protein, gelsolin may be measured as a biomarker of pancreatic cancer.
- Gelsolin has established roles in cell motility and in some embodiments is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference gelsolin in pancreatic cancer-negative individuals.
- an elevated level of gelsolin of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- adipocyte plasma membrane-associated protein may be measured as a biomarker of pancreatic cancer.
- Adipocyte plasma membrane-associated protein also known as adipophilin, is a protein that is expressed in lipid droplets, which are cellular organelles that store lipids such as fats. Adipophilin is expressed in adipose (fat) tissue, and thus, weight loss can lead to a decrease in its levels in the blood. Regular physical activity has been shown to reduce adipose tissue and thus, lower adipophilin levels in the blood. Consuming a diet that is low in fat and high in fiber, fruits, and vegetables may help to reduce adipophilin levels in the blood.
- Certain medications such as statins, which are used to lower cholesterol levels, have been shown to reduce adipophilin levels in the blood, and in some embodiments is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference adipocyte plasma membrane-associated protein in pancreatic cancer-negative individuals.
- an elevated level of adipocyte plasma membrane-associated protein of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- the protein fibronectin may be measured as a biomarker of pancreatic cancer and in some embodiments is elevated to a level of about 1.2 to 10 times or greater compared to a median level of a reference fibronectin in pancreatic cancer-negative individuals. In some embodiments, an elevated level of fibronectin of 1.2 times or more identifies the subject as having pancreatic cancer, such as stage 1 or 2 pancreatic cancer.
- the present disclosure provides for a method of diagnosing and treating pancreatic cancer in a subject. The method comprises step (a) providing a biological sample obtained from the subject, such as a human.
- any type of biological sample that originates anywhere from the body of a subject may be tested, including but not limited to, blood (including, but not limited to serum or plasma), cerebrospinal fluid (“CSF”), pleural fluid, urine, stool, sweat, tears, breath condensate, saliva vitreous humour, a tissue sample, amniotic fluid, a chorionic villus sampling, brain tissue, a biopsy of any solid tissue including tumor, adjacent normal, smooth and skeletal muscle, adipose tissue, liver, skin, hair, brain, kidney, pancreas, lung or the like may be used.
- the biological sample is obtained from blood.
- the pancreatic cancer-related proteins may be extracted from the biological source using any number of extraction/purification procedures that are typically used in quantitative analytical chemistry.
- the method further comprises step (b), which includes measuring concentration levels of at least one, at least two, at least three, at least four, at least five, at least six or at least seven pancreatic cancer-related proteins or peptide fragments thereof selected from the group consisting of apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin from the obtained sample.
- the method comprises measuring at least 8, 9, 10, 11, 12, 13, 14 or 15 pancreatic cancer-related proteins or fragments thereof from the obtained sample.
- the method may further include measuring the concentration levels of one or more additional pancreatic cancer-related proteins or peptide fragments thereof in addition to the foregoing proteins, including, but not limited to, any of those known in the art.
- markers include carbohydrate antigen 19-9 (CA 19-9) (See Goonetilleke and Siriwardena, 2007, Eur J Surg Oncol. 33(3): 266-70, which is incorporated herein by reference), CA 242, hCG beta, CA 72-4 and carcinoembryonic antigen (CEA) (See Louhimo et al., 2004, Oncology, 66(2): 125-31, which is incorporated herein by reference).
- the method described herein further comprises step (c) comparing the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample to the concentration levels of reference pancreatic cancer-related proteins or peptide fragments thereof from a pancreatic cancer-negative sample(s) or a reference value derived therefrom.
- references can be established as a value representative of the level of pancreatic cancer-related proteins or peptide fragments thereof in a population that do not have pancreatic cancer for the comparison.
- the reference is from a pancreatic cancer-negative sample or an average of a number of samples.
- concentration levels of the reference pancreatic cancer-related proteins or peptide fragments thereof are derived from patient populations.
- the method described herein further comprises step (d) identifying the subject as having pancreatic cancer if the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample are different relative to the concentration levels of the reference pancreatic cancer-related proteins or peptide fragments thereof from the pancreatic cancer-negative sample(s) or a reference value derived therefrom.
- the identifying step (d) occurs upon determination that the concentration level of the at least one pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample differs by about 10% or more, 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the at least one reference pancreatic cancer-related protein from the pancreatic cancer-negative sample(s) or a reference value derived therefrom.
- the identifying step (d) occurs upon determination that the concentration levels of at least two, at least three, at least four, at least five, at least six or at least seven pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample differ by about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration levels of the reference pancreatic cancer-related proteins or fragments from the pancreatic cancer-negative sample(s) or a reference value derived therefrom.
- the identifying step (d) occurs upon determination that the concentration levels of at least the apolipoprotein Al from the obtained sample are decreased relative to the concentration levels of the reference apolipoprotein Al from the pancreatic cancernegative sample(s) or a reference value derived therefrom.
- the concentration level of the apolipoprotein Al level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference apolipoprotein Al obtained or derived from the pancreatic cancer-negative sample(s) or a reference value derived therefrom.
- the concentration level of the apolipoprotein Al level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference apolipoprotein Al from the pancreatic cancer-negative sample(s) or a reference value derived therefrom.
- the identifying step (d) occurs upon determination that the concentration levels of at least the apolipoprotein A-II from the obtained sample are decreased relative to the concentration levels of the reference apolipoprotein A-II from the pancreatic cancernegative sample(s) or a reference value derived therefrom.
- the concentration level of the apolipoprotein A-II level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference apolipoprotein A-II from the pancreatic cancernegative sample(s) or a reference value derived therefrom.
- the concentration level of the apolipoprotein A-II level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference apolipoprotein A-II from the pancreatic cancernegative sample(s) or a reference value derived therefrom.
- the identifying step (d) occurs upon determination that the concentration levels of at least the plasma protease Cl inhibitor from the obtained sample are decreased relative to the concentration levels of the reference plasma protease Cl inhibitor from the pancreatic cancer-negative sample(s) or a reference value derived therefrom.
- the concentration level of the plasma protease C 1 inhibitor level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference plasma protease Cl inhibitor from the pancreatic cancer-negative sample(s) or a reference value derived therefrom.
- the concentration level of the plasma protease Cl inhibitor level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference plasma protease Cl inhibitor from the pancreatic cancer- negative sample(s) or a reference value derived therefrom.
- the identifying step (d) occurs upon determination that the concentration levels of at least the L-selectin from the obtained sample are decreased relative to the concentration levels of the reference L-selectin from the pancreatic cancer-negative sample.
- the concentration level of the L-selectin level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference L-selectin from the pancreatic cancer-negative sample.
- the concentration level of the L-selectin level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference L-selectin from the pancreatic cancer- negative sample.
- the identifying step (d) occurs upon determination that the concentration levels of at least the tetranectin from the obtained sample are decreased relative to the concentration levels of the reference tetranectin from the pancreatic cancer-negative sample.
- the concentration level of the tetranectin level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference tetranectin from the pancreatic cancer-negative sample.
- the concentration level of the tetranectin level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference tetranectin from the pancreatic cancer- negative sample.
- the identifying step (d) occurs upon determination that the concentration levels of at least the phospholipid transfer protein from the obtained sample are decreased relative to the concentration levels of the reference phospholipid transfer protein from the pancreatic cancer-negative sample.
- the concentration level of the phospholipid transfer protein level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference phospholipid transfer protein from the pancreatic cancernegative sample.
- the concentration level of the phospholipid transfer protein level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference phospholipid transfer protein from the pancreatic cancer- negative sample.
- the identifying step (d) occurs upon determination that the concentration levels of at least the apolipoprotein M from the obtained sample are decreased relative to the concentration levels of the reference apolipoprotein M from the pancreatic cancernegative sample.
- the concentration level of the apolipoprotein M level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference apolipoprotein M from the pancreatic cancer-negative sample.
- the concentration level of the apolipoprotein M level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference apolipoprotein M from the pancreatic cancer- negative sample.
- the identifying step (d) occurs upon determination that the concentration levels of at least the gelsolin from the obtained sample are decreased relative to the concentration levels of the reference gelsolin from the pancreatic cancer-negative sample.
- the concentration level of the gelsolin level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference gelsolin from the pancreatic cancer-negative sample.
- the concentration level of the gelsolin level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference gelsolin from the pancreatic cancer- negative sample.
- the identifying step (d) occurs upon determination that the concentration levels of at least the adipocyte plasma membrane-associated protein from the obtained sample are decreased relative to the concentration levels of the reference adipocyte plasma membrane-associated protein from the pancreatic cancer-negative sample.
- the concentration level of the adipocyte plasma membrane-associated protein level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference adipocyte plasma membrane-associated protein from the pancreatic cancer-negative sample. In some aspects, the concentration level of the adipocyte plasma membrane-associated protein level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference adipocyte plasma membrane-associated protein from the pancreatic cancer- negative sample.
- the identifying step (d) occurs upon determination that the concentration levels of at least the Cis complement factor from the obtained sample are decreased relative to the concentration levels of the reference Cis complement factor from the pancreatic cancer-negative sample.
- the concentration level of the Cis complement factor level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference Cis complement factor from the pancreatic cancer-negative sample.
- the concentration level of the Cis complement factor level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference Cis complement factor from the pancreatic cancer- negative sample.
- the identifying step (d) occurs upon determination that the concentration levels of at least the C4b complement factor from the obtained sample are decreased relative to the concentration levels of the reference C4b complement factor from the pancreatic cancer-negative sample.
- the concentration level of the C4b complement factor level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference C4b complement factor from the pancreatic cancer-negative sample.
- the concentration level of the C4b complement factor level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference C4b complement factor from the pancreatic cancer-negative sample.
- the identifying step (d) occurs upon determination that the concentration levels of at least the C6 complement factor from the obtained sample are decreased relative to the concentration levels of the reference C6 complement factor from the pancreatic cancer-negative sample.
- the concentration level of the C6 complement factor level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference C6 complement factor from the pancreatic cancer-negative sample.
- the concentration level of the C6 complement factor level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference C6 complement factor from the pancreatic cancer- negative sample.
- the identifying step (d) occurs upon determination that the concentration levels of at least the fibronectin from the obtained sample are decreased relative to the concentration levels of the reference fibronectin from the pancreatic cancer-negative sample.
- the concentration level of the fibronectin level from the obtained sample is higher than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference fibronectin from the pancreatic cancer-negative sample.
- the concentration level of the fibronectin level from the obtained sample is lower than about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more, or about 70% or more relative to the concentration level of the reference fibronectin from the pancreatic cancer- negative sample.
- the method described herein further comprises step (e) treating the subject so identified as having pancreatic cancer with a pancreatic cancer treatment regime.
- the comparison of the concentration level of the at least one pancreatic cancer-related protein from the obtained sample, or a value derived therefrom, to the concentration level of the reference pancreatic cancer-related protein from the pancreatic cancer-negative sample comprises using multivariate statistical analysis.
- the multivariate statistical analysis is selected from principal component analysis (“PC A”), or partial least squares projects to latent structures discriminant analysis (“PLS-DA”).
- a computer is used for statistical analysis. Data for statistical analysis can be extracted from chromatograms (i.e., spectra of mass signals) using software for statistical methods known in the art.
- the present disclosure relates to a method of monitoring pancreatic cancer progression and treating the pancreatic cancer in a subject.
- the method includes quantifying the pancreatic cancer-related proteins, or peptide fragments thereof, at one or more time points after the initiation of treatment to monitor pancreatic cancer progression or regression in a subject.
- the method comprises: (a) providing a first biological sample obtained from the subject at a first time; (b) assessing a first pancreatic cancer-related proteomic profile by measuring concentration levels of at least one, at least two, at least three, at least four, at least five, at least six or at least seven pancreatic cancer-related proteins or peptide fragments thereof selected from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L- selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectinfrom the first obtained sample; (c) comparing the first pancreatic cancer- related proteomic profile with a reference pancreatic cancer-related proteomic profile from a pancreatic cancer-negative sample; (d) determining that there is a first difference between the first pancreatic cancer-related proteomic profile and the reference
- the period between the first time and the second time is at least 1 month, at least 2 months, at least 3 months, at least 6 months, at least 9 months, or at least 12 months, preferably at least 3 months.
- the treatment has been administered to the subject before the first two biological samples have been obtained. In other embodiments, the treatment has been administered to the subject in the interval(s) between the taking of the biological samples.
- the first biological sample, the second biological sample, or both are blood or urine, preferably serum, plasma or urine.
- the present disclosure also provides for a method for diagnosing and treating pancreatic cancer in a subject.
- the method comprises: (a) providing a biological sample obtained from the subject; (b) measuring concentration levels of at least one, at least two, at least three, at least four, at least five, at least six or at least seven pancreatic cancer-related proteins or protein fragments thereof, selected from the group consisting of apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin; (c) comparing the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof from the obtained sample to the concentration levels of reference pancreatic cancer-related proteins or fragments thereof from an pancreatic cancer-negative sample; (d) identifying the subject as having pancreatic
- the present disclosure also provides for a method for diagnosing and treating pancreatic cancer in a subject that comprises: (a) providing a biological sample obtained from the subject; (b) measuring concentration levels of at least one, at least two, at least three, at least four, at least five, at least six or at least seven pancreatic cancer-related proteins or fragments thereof selected from the group consisting of apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L- selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin from the obtained sample; (c) comparing the concentration levels of the pancreatic cancer-related proteins or fragments thereof from the obtained sample to the concentration levels of reference pancreatic cancer-related proteins or fragments thereof from a pancreatic cancer-negative sample or baseline; (d) measuring concentration levels of at least one, at least two
- the identifying step (f) occurs upon determination that the concentration levels of at least one, at least two, at least three, at least four, at least five, at least six or at least seven of the pancreatic cancer-related proteins or fragments thereof from the obtained sample differ by about 20% or more, about 30% or more, about 40% or more, about 50% or more, about 60% or more or about 70% or more relative to the concentration levels of the reference pancreatic cancer-related proteins or fragments from the pancreatic cancernegative sample or baseline.
- the pancreatic cancer-related proteins or peptide fragments thereof are measured by a spectroscopic technique, the spectroscopic technique being selected from the group consisting of liquid chromatography, gas chromatography, liquid chromatography mass spectrometry, gas chromatography mass spectrometry, high performance liquid chromatography mass spectrometry, capillary electrophoresis mass spectrometry, nuclear magnetic resonance spectrometry (NMR), raman spectroscopy, and infrared spectroscopy.
- a spectroscopic technique being selected from the group consisting of liquid chromatography, gas chromatography, liquid chromatography mass spectrometry, gas chromatography mass spectrometry, high performance liquid chromatography mass spectrometry, capillary electrophoresis mass spectrometry, nuclear magnetic resonance spectrometry (NMR), raman spectroscopy, and infrared spectroscopy.
- the measurement of the concentration levels of the pancreatic cancer-related proteins or peptide fragments thereof may be performed by a method comprising mass spectrometry, including but not limited to gas chromatography mass spectrometry (GC-MS) GC and liquid chromatography mass spectrometry (e.g., LC-MS, LC-MS-MS, LC-MRM, LC- SIM, and LC-SRM).
- the mass spectrometry is a multiple reaction monitoring mass spectrometry, a parallel reaction monitoring mass spectrometry, a matrix-assisted laser desorption/ionization (MALDI) mass spectrometry or a data-independent acquisition mass spectrometry.
- the multiple reaction monitoring mass spectrometry is an immuno-multiple reaction monitoring mass spectrometry, an immuno-parallel reaction monitoring, an immuno-MALDI or an immuno-data independent acquisition mass spectrometry.
- the procedure comprising mass spectrometry includes introducing a protein sample into a mass spectrometry unit, which is subsequently fragmented inside the mass spectrometry unit and the masses of the fragments are recorded and provided for analysis.
- the mass spectrometry process for determining whether the pancreatic-related proteins are elevated comprises enzymatic or chemical digestion of the proteins or peptide fragments thereof of a sample obtained from a subject into peptide fragments.
- the peptide fragments are optionally separated and/or ionized and captured by mass spectrometry.
- the digestion may comprise a proteolytic digestion involving treating a preparation comprising the pancreatic cancer-related proteins with an acid, base, or an enzyme such as trypsin or other proteolytic enzyme.
- One embodiment comprises a shotgun proteomics quantification in which the whole proteins in a complex mixture, such as serum, urine, and cell lysates, are hydrolyzed or otherwise cut into peptides and followed by multidimensional HPLC-MS, which aims to generate a global profile of protein mixtures as genome “shotgun” sequencing.
- a complex mixture such as serum, urine, and cell lysates
- pancreatic-related proteins, or peptide fragments thereof are elevated in a sample obtained from a subject, the pancreatic-related proteins or peptide fragments thereof being selected from at least one of pancreatic cancer-related proteins, or peptide fragments thereof, comprising the apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin, the method comprising enzymatic or chemical digestion of the proteins or peptide fragments thereof of the sample obtained from a subject into peptide fragments to produce peptide fragments thereof; introducing a solution comprising the peptide fragments to a mass spectrometer, optionally after one or more treatments comprising the apolipoprotein Al, apolipoprotein A-II, plasma protea
- the baseline is a normal level of a protein or peptide derived from a subject or a population of subjects that do not have pancreatic cancer.
- the standard may comprise one or more of the pancreatic cancer-related proteins, or peptide fragments thereof, at concentrations that correspond to such normal levels.
- the standard may be a value derived from a sample or samples obtained previously from subjects without pancreatic cancer.
- the standard may comprise one or more of the apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin, or fragments thereof.
- a plurality of standards comprising one or more of the pancreatic cancer-related peptide fragments, at concentrations that correspond to normal levels.
- the standards may comprise any combination of peptide fragments derived from apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin.
- the subject Prior to pancreatic cancer treatment, the subject will typically have a biopsy to confirm the presence of pancreatic cancer.
- the biopsy may be selected from percutaneous biopsy, endoscopic biopsy or a surgical biopsy.
- a percutaneous biopsy involves inserting a hollow needle through the skin and into the pancreas to remove a tumour sample. The procedure may be facilitated by imaging, such as ultrasound or CT scans.
- An endoscopic biopsy involves passing an endoscope to the pancreas via the throat and small intestine. Samples are obtained from the bile or pancreatic ducts using an endoscopic ultrasound to pass a needle into the tumour or a brush is used to remove cells from the bile or pancreatic ducts.
- a surgical biopsy may be performed if it is desirable to determine whether the pancreatic cancer has spread.
- a surgical biopsy may be performed using laparoscopy (keyhole surgery).
- additional tests are performed to assess if cancer cells obtained from the biopsy have mutations in certain genes. If mutations in genes implicated in pancreatic cancer are found, targeted therapy may be part of the pancreatic treatment regime.
- the data from the proteomic profile assessment may be used in conjunction with this information.
- Imaging tests may be performed to facilitate diagnosis. Imaging tests may use x-rays, magnetic fields, sound waves, or radioactive substances to visualize a tumour. Examples of imaging include computer tomography (CT) scan, magnetic resonance imaging, ultrasound, cholangiopancreatography, such as magnetic resonance cholangiopancreatography or percutaneous transhepatic cholangiography, positron emission tomography scan or angiography.
- CT computer tomography
- magnetic resonance imaging such as magnetic resonance cholangiopancreatography or percutaneous transhepatic cholangiography
- positron emission tomography scan or angiography positron emission tomography
- the pancreatic treatment regime may include surgery to remove a tumour.
- the pancreatic cancer treatment regime may alternatively or additionally include one or more therapeutic agents to treat pancreatic cancer.
- therapeutic agents include the following: Abraxane (Paclitaxel Albumin-stabilized Nanoparticle Formulation); Afinitor (Everolimus); Capecitabine; Erlotinib Hydrochloride; Everolimus; 5-FU (Fluorouracil Injection); Fluorouracil; Gemcitabine, MRTX1133, which targets Kras G12D mutants, and/or Olaparib.
- the pancreatic cancer treatment may additionally or alternatively include radiation treatment to reduce tumour size.
- the one or more therapeutics are formulated in a delivery vehicle, such as a lipid nanoparticle.
- Therapeutics that are formulated into a delivery vehicle, such as a lipid nanoparticle may include one or more RNA sequences of the pancreatic cancer biomarkers mentioned above or the RNA sequences of biomarkers associated with the aforementioned pancreatic biomarkers, which may be used to suppress their disease action or reduce their levels.
- the proteomic profile described herein may be utilized in tests, assays, methods, kits for diagnosing, predicting, modulating or monitoring pancreatic cancer, including ongoing assessment, monitoring and/or susceptibility assessment.
- the present disclosure includes a kit for diagnosis of pancreatic cancer by measuring and identifying at least one or more pancreatic cancer- related proteins or fragments thereof associated with pancreatic cancer.
- the kit may comprise (a) a detector configured to detect concentration levels of at least one, at least two, at least three, at least four, at least five, at least six or at least seven pancreatic cancer-related proteins or fragments thereof selected from the group consisting of apolipoprotein Al, apolipoprotein A- II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin in control levels corresponding to control group of pancreatic cancer-negative subjects, (c) a multivariate analysis system configured to analyze a difference in the concentration levels of the pancreatic cancer- related proteins or fragments thereof and the control levels, and (d) optionally, instructions for an pancreatic cancer diagnosis method, wherein the method comprises measuring, using the detector, the levels of the pancreatic cancer-related proteins or peptide fragments thereof from the group consist
- the pancreatic cancer diagnosis method comprises a multi-metabolite detector configured to measure the levels of pancreatic cancer- related proteins or peptides thereof.
- the detector may be part of a mass spectrometry unit, optionally operably communicating with a chromotography unit, such as a liquid chromatography unit.
- the kit may be for the measurement of the pancreatic cancer-related proteins or fragments thereof by a physical separation technique (as described herein above).
- the kit may be for measurement of the pancreatic cancer-related proteins or peptides by a methodology other than a physical separation method, such as for non-limiting example, a colorimetric, enzymatic, and immunological methodology.
- the kit may also include one or more appropriate negative and/or positive controls.
- Kit of the present disclosure may include other reagents such as buffers and solutions for performing the tests.
- the disclosure is also directed to a computer-implemented method for processing a biological sample of a subject, diagnosing pancreatic cancer and treating the pancreatic cancer.
- the computer-implemented method may further allow monitoring of pancreatic cancer progression across multiple time points to support a more effective treatment regime.
- the computer-implemented method comprises receiving a biological sample from the subject; processing the sample in a spectroscopy unit directly or wirelessly linked, or may utilize any suitable communication technology, to a processing device, the processing device having memory for storing measurement data from the spectroscopy unit; and in the spectroscopy unit, measuring levels of least one, at least two, at least three, at least four, at least five pancreatic, at least six or at least seven cancer-related proteins or fragments thereof selected from the group consisting of apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin and storing the measurement data in the processor.
- the processing device comprises one or more data storage devices that may be configured or adapted to store data related to the method.
- the data storage device may be configured or adapted to store measurement data from the spectroscopy unit.
- the data storage device may also comprise computer program code stored thereon.
- the program code of this embodiment may include program code for at least performing the steps of the method aspect upon execution thereof.
- the computer-implemented method further comprises comparing the stored measurement data to a value in the memory representing an pancreatic cancer-negative sample using multivariate statistical analysis; storing in the processing device a result corresponding to at least one, at least two, at least three, at least four, at least five, at least six or at least seven pancreatic cancer-related proteins or fragments thereof selected from the group consisting of apolipoprotein Al, apolipoprotein A-II, plasma protease Cl inhibitor, L-selectin, tetranectin, phospholipid transfer protein, apolipoprotein M, gelsolin, adipocyte plasma membrane-associated protein, Cis complement factor, C4b complement factor, C6 complement factor and fibronectin from the obtained sample, wherein the result identifies the subject as having pancreatic cancer if the measurement data representing the level of the pancreatic cancer-related protein or fragment thereof is different relative to a concentration value of a reference pancreatic cancer-related protein or fragment thereof from an pancreatic
- the displayed result or treatment regime comprises electronic text, optionally with graphical icons.
- the graphical icons are part of an electronic dashboard that displays the result in a format that simplifies the result and/or provides a treatment recommendation based on the result.
- the computer-implemented method may further allow monitoring of pancreatic cancer-related proteins across multiple time points to support a more effective treatment regime.
- a biological sample e.g., serum sample
- Tl time point 1
- the sample is subjected to a proteolysis 10A to produce hydrolyzed proteins, the hydrolyzed proteins are subjected to mass spectrometry 20A and pancreatic cancer-related proteins are measured 30A.
- the concentrations are compared to a pancreatic cancer negative sample 40A and it is determined whether the concentrations of the protein(s) are increased or decreased relative to the standard 50A.
- the pancreatic cancer-related proteins are at least one of L-selectin, tetranectin, phospholipid transfer protein and/or fibronectin.
- At least one of L-selectin, tetranectin, and/or phospholipid transfer protein are elevated relative to a baseline (e.g., pancreatic negative sample).
- a baseline e.g., pancreatic negative sample
- the subject is identified as having a possible risk of having pancreatic cancer or developing the disease (YES). If the concentrations of L-selectin, tetranectin, phospholipid transfer protein and/or fibronectin do not differ significantly from the standard, then the subject is identified has having a low pancreatic cancer risk 60 (NO).
- the pancreatic cancer-related proteins and the pancreatic cancer-related proteins from the pancreatic negative sample the “worse off’ the individual’s likelihood of having pancreatic cancer or developing the disease. It is desirable that this information is obtained earlier in the individual’s life (e.g., 40 years or below, 35 years or below, 30 years or below, or 25 years or below), so as to increase any benefits from the delay or offset of the progress of the pancreatic cancer.
- pancreatic cancer-related proteins While a smaller magnitude of the elevation between the measured pancreatic cancer-related proteins and the pancreatic cancer-related proteins from the pancreatic negative sample reflects the individual’s low likelihood of having or developing pancreatic cancer up to that point in time, there is no assurance that the magnitude of the elevation will continue to remain small at a later time point. Therefore, it is advisable for these individuals to continually monitor their risk of having or developing pancreatic cancer on a regular basis. For example, if the subject is identified as having a possible risk of having pancreatic cancer or developing the disease (YES), a second biological sample (e.g., serum sample) is obtained at time point 2 (T2), which is after Tl .
- T2 time point 2
- the individual’s risk of having or developing pancreatic cancer is measured over the lifetime of the individual (or at least over an extended period of time such as, for example, at least two months, at least four months, at least six months, at least a year, at least two years, at least five years, at least a decade, at least two decades, or at least three decades).
- the sample is subjected to a proteolysis 10B to produce hydrolyzed proteins, the hydrolyzed proteins are subjected to mass spectrometry 20B and pancreatic cancer-related proteins are measured 3 OB.
- the concentrations are compared to T2 40B and it is determined whether the protein(s) are increased or decreased relative to T2 concentration levels 50B.
- pancreatic cancer- related proteins selected from L-selectin, tetranectin, phospholipid transfer protein and/or fibronectin are elevated relative to T1 by a threshold value (e.g., at least 10%, at least 20%, at least 30%), then the subject is identified as having a high risk of having pancreatic cancer or developing the disease 70 (YES).
- the subject is typically identified as having pancreatic cancer after a biopsy is taken and analyzed for the presence of cancerous cells (e.g., using microscopy). If the concentrations of L-selectin, tetranectin, phospholipid transfer protein and/or fibronectin do not differ significantly from Tl, then the subject is identified as having a low pancreatic cancer risk 60 (NO).
- the pancreatic cancer-related proteins can be measured at a third time point, time point 3 (T3), which is after T2, if required.
- T3 time point 3
- the concentrations of the pancreatic cancer-related proteins at T3 can be compared to the levels at one or both of T2 and Tl to identify the subject has having a high or low risk of having pancreatic cancer or developing the disease.
- the method according to the present disclosure allows for monitoring changes in status of the pancreatic cancer or risk of developing (or redeveloping) pancreatic cancer over time, particularly after any treatment regime.
- the treatment regime typically involves surgery, but may additionally or alternatively comprise administration of chemotherapeutic agents and/or radiation treatment.
- Example 1 Diagnosis and treatment of a patient with stage one pancreatic cancer as determined by monitoring changes in concentrations of pancreatic related proteins over time
- the proteomic profile of a patient was monitored over the course of three years from 2019 to 2022 as part of a multi-omics health assessment provided by the Applicant.
- Each of the proteins set forth below in Table 1 were identified as exhibiting a significant change in blood concentration (nM) as measured over the three-year period.
- certain proteins L-selectin, tetranectin and phospholipid transfer protein
- T2 timepoint 2
- Tl timepoint 1
- fibronectin decreased by 323.98% from timepoint 3 (T3) to timepoint 2 (T2).
- L-selectin, Tetranectin and phospholipid transfer protein were elevated at T2 (timepoint 2) and thus were identified as early indicators of pancreatic cancer. The concentrations of each of these proteins were also elevated at T3 (timepoint 3). In addition, fibronectin levels were low at T1 (242.0 nM) and T3 (295.7 nM) timepoints but elevated at T2 (1254.2 nM). A -323.98% change in fibronectin was observed between T2 and T3.
- Tetranectin levels have been shown to be decreased in pancreatic cancer in previous studies (Caputo et al., 2022, Cancers (Basel), 14(19):4658; and Felix et al., 2013, PloS ONE, 8e82755). However, the inventors found that this protein was increased over the time period of measurement.
- pancreatic cancer The patient was assessed by a medical practitioner and diagnosed with stage 1 pancreatic cancer. A biopsy was obtained from the patient and examined by microscopy to confirm the diagnosis. The patient underwent surgery to remove the tumour. To the inventors’ knowledge, this is the first positive early stage diagnosis and treatment of pancreatic cancer using the novel proteomic profile identified herein.
- the changes in blood concentration of one or a combination of certain pancreatic cancer- related proteins measured over time provides a tool for early-stage detection of pancreatic cancer that has not otherwise been available using known diagnostic approaches. Monitoring of the combination of proteins identified as being elevated in the patient to diagnose and treat pancreatic cancer thus represents a significant advance over the art.
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| Title |
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| EHMANN MICHAEL; FELIX KLAUS; HARTMANN DANIEL; SCHNOELZER MARTINA; NEES MATTHIAS; VORDERWUELBECKE SONJA; BOGUMIL RALF; BUECHLER MAR: "Identification of potential markers for the detection of pancreatic cancer through comparative serum protein expression profiling.", PANCREAS, vol. 34, no. 2, 1 March 2007 (2007-03-01), US , pages 205 - 214, XP008183746, ISSN: 1536-4828, DOI: 10.1097/01.mpa.0000250128.57026.b2 * |
| KIM HONGBEOM, KANG KYUNG NAM, SHIN YONG SUNG, BYUN YOONHYEONG, HAN YOUNGMIN, KWON WOOIL, KIM CHUL WOO, JANG JIN-YOUNG: "Biomarker Panel for the Diagnosis of Pancreatic Ductal Adenocarcinoma", CANCERS, vol. 12, no. 6, 1 January 2020 (2020-01-01), CH , pages 1 - 11, XP093225715, ISSN: 2072-6694, DOI: 10.3390/cancers12061443 * |
| KLAUS FELIX, OLIVER HAUCK, STEFAN FRITZ, ULF HINZ, MARTINA SCHNÖLZER, TORE KEMPF, UWE WARNKEN, ANGELIKA MICHEL, MICHAEL PAWLITA, J: "Serum Protein Signatures Differentiating Autoimmune Pancreatitis versus Pancreatic Cancer", PLOS ONE, vol. 8, no. 12, 1 December 2013 (2013-12-01), pages 1 - 9, XP055355208, DOI: 10.1371/journal.pone.0082755 * |
| XIN DONG , YAN BO LOU , YUN CHUAN MU , MU XING KANG , YU LIAN WU: "Predictive Factors for Differentiating Pancreatic Cancer- Associated Diabetes Mellitus from Common Type 2 Diabetes Mellitus for the Early Detection of Pancreatic Cancer", DIGESION, vol. 98, no. 4, 1 January 2018 (2018-01-01), CH , pages 209 - 216, XP009558342, ISSN: 0012-2823, DOI: 10.1159/000489169 * |
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