This is a multicenter, multicountry, randomized, double-blind, placebo-controlled phase II clinical trial to evaluate the efficacy and safety of CBP-307 in subjects with moderate to severe ulcerative colitis (UC). CBP-307 capsules are administered orally. This study includes stage 1 and stage 2. After screening, subjects will enter the randomized, double-blind, placebo-controlled induction therapy for 12 weeks, i.e., the study stage 1. All subjects who complete 12 weeks of induction therapy (with CBP-307 or placebo) in the study stage 1 and complete all examinations (including colonoscopy) at the week 12 visit can choose to enter the study stage 2 of a total of 40 weeks, including 36 weeks of continuous administration and 4 weeks of safety follow-up after the last dose.
This study will evaluate the efficacy and safety of CBP-307 in subjects with moderate to severe ulcerative colitis (UC).