Effectiveness and safety of vedolizumab for maintenance treatment in inflammatory bowel disease-The Israeli real world experience.

Several real-world experience (RWE) studies with vedolizumab (VDZ) for induction of remission in inflammatory bowel diseases (IBD) have been published; however, long-term RWE data is scarce. To describe the effectiveness and safety of VDZ in maintenance treatment of IBD. A multicenter retrospective national study. The primary outcome of was clinical response at week 52; main secondary aims included clinical remission at week 52, rates of secondary loss of response and treatment discontinuation. We included 193 (133-CD; 60-UC) patients from 9 Israeli IBD centers. At week 52, response was observed in 62/133 (46.7%) CD patients, including 28 (21%) in clinical remission; 71 (53.3%) discontinued treatment or did not respond. For UC, response at week 52 was observed in 27/60 (45%), including 20 (33%) in clinical remission; 33 (55%) discontinued treatment or did not respond. Secondary non-response by week 52 occurred in 19.4% and 23.5% of week 14 responders in CD and UC, respectively. Week 14 response was associated with treatment continuation at week 52: no predictors of secondary loss of response were identified. VDZ is safe and effective for maintenance of response and remission in IBD; week 14 response is positively associated with long-term response in both UC and CD.

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