A Study to Assess Whether Etrolizumab is a Safe and Effective Treatment for Participants With Moderately to Severely Active Crohn's Disease (CD)

A Study to Evaluate the Efficacy, Safety, and Pharmacokinetics of UTTR1147A Compared With Placebo and With Vedolizumab in Participants With Moderate to Severe Ulcerative Colitis (UC)

Open-Label Extension and Safety Study for Patients With Crohn's Disease Previously Enrolled in the Etrolizumab Phase III Study GA29144

Study for Participants With Ulcerative Colitis Previously Enrolled in Etrolizumab Phase II/III Studies