Overview A Clinical Trial of Natalizumab in Individuals With Moderately to Severely Active Crohn's Disease Status: Completed Trial end date: 2005-03-01 Target enrollment: Participant gender: Summary The purpose of this trial is to evaluate natalizumab in individuals with moderately to severely active Crohn's Disease. Phase: Phase 3 Details Lead Sponsor: BiogenCollaborator: Elan PharmaceuticalsTreatments: Natalizumab