Discovery of biomarker candidates associated with the risk of short- and long-term relapse after infliximab withdrawal in Crohns patients: a proteomics-based study
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ABSTRACT: Objective: A subset of Crohns disease (CD) patients experiences long-term remission after infliximab withdrawal. Biomarkers are needed to identify those patients.Design: New biomarkers of relapse were searched in the baseline serum of CD patients stopping infliximab when they were under combined therapy (antimetabolite and infliximab) and stable clinical remission (STORI cohort, n=102). From shotgun proteomics experiment (discovery step), biomarker candidates were identified and further targeted by selected reaction monitoring (verification step). The dataset was stratified to search for markers of short- (<6 months) or long-term relapse (>6 months). The risk of relapse and the predicting capacity associated with biomarker candidates were evaluated using univariate Cox model and log-rank statistic, respectively. To test their complementary predicting capacity, biomarker candidates were systematically combined in pairs. Results: Distinct biomarker candidates were associated with the risk (hazard ratio: HR) of short- (15 proteins, 2.9
INSTRUMENT(S): Synapt MS
ORGANISM(S): Homo Sapiens (human)
TISSUE(S): Blood Serum
DISEASE(S): Crohn's Disease
SUBMITTER: nicolas Pierre
LAB HEAD: Edouard LOUIS
PROVIDER: PXD019008 | Pride | 2020-10-19
REPOSITORIES: Pride
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