The main purpose of this study is to investigate efficacy, pharmacokinetics and safety of the drug in pediatric participants with moderately to severely active ulcerative colitis (UC).
A Multicenter, Phase 3, Open-Label Study to Investigate the Efficacy, Pharmacokinetics, and Safety of Mirikizumab in Participants 2 Years to Less Than 18 Years of Age With Moderately to Severely Active Ulcerative Colitis
Participants who complete the study will have the option to enter the long-term extension Study I6T-MC-AMAZ (AMAZ).