 The study will enroll approximately 100 patients and will be conducted in 2 Parts. Part A will consist of a 26-week treatment period and all participants will receive vedolizumab 300 mg intravenously IV on Day 1 and at Weeks 2, 6, 14 and 22. Part B will consist of a 26-week extension treatment period and all participants will receive vedolizumab 300 mg IV at Weeks 30, 38, and 46. 