Abstract
Tumor-educated blood platelets (TEPs) are implicated as central players in the systemic and local responses to tumor growth, thereby altering their RNA profile. We determined the diagnostic potential of TEPs by mRNA sequencing of 283 platelet samples. We distinguished 228 patients with localized and metastasized tumors from 55 healthy individuals with 96% accuracy. Across six different tumor types, the location of the primary tumor was correctly identified with 71% accuracy. Also, MET or HER2-positive, and mutant KRAS, EGFR, or PIK3CA tumors were accurately distinguished using surrogate TEP mRNA profiles. Our results indicate that blood platelets provide a valuable platform for pan-cancer, multiclass cancer, and companion diagnostics, possibly enabling clinical advances in blood-based "liquid biopsies".
Copyright © 2015 The Authors. Published by Elsevier Inc. All rights reserved.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Aged
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Aged, 80 and over
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Biomarkers, Tumor / blood
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Biomarkers, Tumor / genetics*
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Blood Platelets / metabolism*
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Class I Phosphatidylinositol 3-Kinases
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ErbB Receptors / genetics
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Female
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Gene Expression Profiling / methods
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Gene Ontology
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Humans
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Male
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Middle Aged
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Mutation
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Neoplasms / blood
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Neoplasms / diagnosis
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Neoplasms / genetics*
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Pathology, Molecular / methods
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Phosphatidylinositol 3-Kinases / genetics
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Proto-Oncogene Proteins c-met / genetics
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Proto-Oncogene Proteins p21(ras) / genetics
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Receptor, ErbB-2 / genetics
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Reproducibility of Results
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Sensitivity and Specificity
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Sequence Analysis, RNA / methods
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Signal Transduction / genetics*
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Support Vector Machine
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Young Adult
Substances
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Biomarkers, Tumor
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KRAS protein, human
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Phosphatidylinositol 3-Kinases
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Class I Phosphatidylinositol 3-Kinases
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PIK3CA protein, human
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EGFR protein, human
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ErbB Receptors
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MET protein, human
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Proto-Oncogene Proteins c-met
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Receptor, ErbB-2
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Proto-Oncogene Proteins p21(ras)