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2017 ; 13
(9
): 942
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Revisiting biomarker discovery by plasma proteomics
#MMPMID28951502
Geyer PE
; Holdt LM
; Teupser D
; Mann M
Mol Syst Biol
2017[Sep]; 13
(9
): 942
PMID28951502
show ga
Clinical analysis of blood is the most widespread diagnostic procedure in
medicine, and blood biomarkers are used to categorize patients and to support
treatment decisions. However, existing biomarkers are far from comprehensive and
often lack specificity and new ones are being developed at a very slow rate. As
described in this review, mass spectrometry (MS)-based proteomics has become a
powerful technology in biological research and it is now poised to allow the
characterization of the plasma proteome in great depth. Previous "triangular
strategies" aimed at discovering single biomarker candidates in small cohorts,
followed by classical immunoassays in much larger validation cohorts. We propose
a "rectangular" plasma proteome profiling strategy, in which the proteome
patterns of large cohorts are correlated with their phenotypes in health and
disease. Translating such concepts into clinical practice will require
restructuring several aspects of diagnostic decision-making, and we discuss some
first steps in this direction.