{"nct_id":"NCT00027300","title":"Safety and Efficacy of Natalizumab in the Treatment of Multiple Sclerosis","status":"COMPLETED","status_verified_date":"2017-01","start_date":"2001-11","start_date_type":null,"primary_completion_date":"2004-11","primary_completion_date_type":"ACTUAL","completion_date":"2005-01","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["BIIB"]}