Overview A Study of the Safety and Efficacy of Ustekinumab (CNTO 1275) in Participants With Crohn's Disease Status: Completed Trial end date: 2006-10-01 Target enrollment: Participant gender: Summary The purpose of this study is to examine the safety and efficacy of CNTO 1275 in participants with active Crohn's Disease. Phase: Phase 2 Details Lead Sponsor: Centocor, Inc.Treatments: Ustekinumab