{"nct_id":"NCT00280956","title":"Open Label Natalizumab Safety Extension Study for Subjects With Crohn's Disease","status":"COMPLETED","status_verified_date":"2012-03","start_date":"2002-07","start_date_type":null,"primary_completion_date":"2004-09","primary_completion_date_type":"ACTUAL","completion_date":"2004-09","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["BIIB"]}