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Sökning: WFRF:(Petren A.) > Örebro universitet

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  • Kalla, R., et al. (författare)
  • Serum proteomic profiling at diagnosis predicts clinical course, and need for intensification of treatment in inflammatory bowel disease
  • 2021
  • Ingår i: Journal of Crohn's & Colitis. - : Elsevier. - 1873-9946 .- 1876-4479. ; 15:5, s. 699-708
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Success in personalised medicine in complex disease is critically dependent on biomarker discovery. We profiled serum proteins using a novel proximity extension assay (PEA) to identify diagnostic and prognostic biomarkers in inflammatory bowel disease (IBD).METHODS: We conducted a prospective case-control study in an inception cohort of 552 patients (328 IBD, 224 non-IBD), profiling proteins recruited across 6 centres. Treatment escalation was characterised by the need for biological agents or surgery after initial disease remission. Nested leave-one-out cross validation was used to examine the performance of diagnostic and prognostic proteins.RESULTS: A total of 66 serum proteins differentiated IBD from symptomatic non-IBD controls including MMP-12 (Holm adjusted p=4.1×10 -23 ) and OSM (p=3.7×10 -16). Nine of these proteins associate with cis- germline variation (59 independent SNPs). Fifteen proteins, all members of TNF independent pathways including IL-1 and OSM predicted escalation, over a median follow-up of 518 (IQR 224-756) days. Nested cross-validation of the entire data set allows characterisation of 5-protein-models (96% comprising five core proteins ITGAV, EpCAM, IL18, SLAMF7, and IL8) which define a high-risk subgroup in IBD (HR 3.90, CI: 2.43-6.26), or allows distinct 2, and 3 protein models for UC and CD respectively.CONCLUSION: We have characterised a simple oligo-protein panel that has the potential to identify IBD from symptomatic controls and to predict future disease course. Further prospective work is required to validate our findings.
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