Phase 3 Study Evaluating the Safety and Effectiveness of Duvakitug in Adults and Older Teens With Moderate to Severe Ulcerative Colitis

What this Trial Is About

This research aims to evaluate the efficacy and safety of duvakitug in people with moderately to severely active Ulcerative Colitis UC. It is a multicenter, randomized, double-blind, placebo-controlled Phase 3 maintenance study that includes participants aged 16 to 80 years. The study is sponsored by Sanofi and focuses on assessing clinical remission and other important health outcomes in UC. Participants receive subcutaneous injections of duvakitug or placebo according to protocol. The study includes a 40-week Pivotal Maintenance Sub-Study followed by a 240-week Open-Label Extension OLE Sub-Study for those who continue. Those not entering the OLE will have a 45-day follow-up after the maintenance period. There are up to 32 on-site visits in total, with 21 visits during the maintenance phase and 11 during the extension. During the study, participants will have clinical assessments including endoscopy to evaluate remission and mucosal healing, symptom tracking such as bowel urgency and abdominal pain, and quality of life questionnaires. Safety is monitored through adverse event reporting and blood tests for drug concentrations and antibodies. The primary outcome is the proportion of participants achieving clinical remission by the modified Mayo Score at Week 40, with follow-up continuing up to 286 weeks for some participants.

A Maintenance Study to Investigate the Efficacy and Safety of Duvakitug in Participants With Moderately to Severely Active Ulcerative Colitis