This is a non-interventional, prospective study of participants with moderately to severely active IBD (UC or CD) who are initiating or currently ongoing induction or maintenance treatment with vedolizumab in the real world setting.~The study will enroll approximately 160 participants: 100 participants with UC and 60 participants with CD. The data will be collected prospectively at the study sites and will be recorded into electronic case report forms (e-CRFs). All the participants will be assigned to a single observational cohort:~•Participants with IBD~This single center study will be conducted in Poland at public hospitals and institutions that treat UC and CD. The overall duration of the study will be at least 24 months. Data will be collected at baseline, every 3 months within the first year and every 6 months within the second year, and at the time of switch, discontinuation and/or at routine follow-up visits.
The primary reason of this study is to observe current treatment options in participants receiving Vedolizumab, intravenous (IV) or subcutaneous (SC), for IBD in Poland. There is no treatment involved in this study, this is only an observational review of ongoing/initiating treatment data relating to Vedolizumab induction and maintenance treatment for IBD [including Ulcerative Colitis (UC) and Crohn's Disease (CD)].