Long-Term Safety Study of Vedolizumab Injections in Children and Teens With Ulcerative Colitis or Crohns Disease

What this Trial Is About

Researchers are studying the long-term safety of vedolizumab given as a subcutaneous injection to children and teenagers aged 2 to 17 years with moderate to severe active ulcerative colitis UC or Crohns disease CD. The study aims to understand medical problems that may arise from extended use of vedolizumab SC, as well as its impact on hospital visits due to bowel inflammation and on the quality of life for these young participants. This Phase 3b extension study follows participants from an earlier study VedolizumabSC-3003 who have responded well or not to treatment. Participants who responded well to vedolizumab SC in the parent study will continue treatment in this extension study, receiving the same dose and frequency. They will be randomly assigned to receive vedolizumab 108 mg either via a prefilled syringe with an autoinjector pen or with a needle safety device. Dosage is every two weeks for participants weighing at least 30 kg and every four weeks for those weighing between 10 and under 30 kg. Those who did not respond well or recently used corticosteroids will not receive vedolizumab in this study but will be observed in an observational cohort. Throughout the study, participants will visit their study clinic multiple times over up to two years. Researchers will monitor adverse events and serious adverse events up to 18 weeks after the last dose, as well as special safety events in the observational group. They will also assess time to major inflammatory bowel disease-related events and changes in quality of life using the IMPACT-III questionnaire at regular intervals. Participants will have a safety follow-up visit after treatment ends, and those in the observational group will be followed for about two years after their last dose in the parent study.

A Long-Term Extension Study of Vedolizumab in Children and Teenagers With Ulcerative Colitis (UC) or Crohn's Disease (CD)