{"nct_id":"NCT00492466","title":"Investigating if Interferon-Beta Can be Used in Patients With MS After They Have Developed Neutralizing Antibodies","status":"COMPLETED","status_verified_date":"2008-01","start_date":"2003-03","start_date_type":null,"primary_completion_date":"2006-08","primary_completion_date_type":"ACTUAL","completion_date":"2006-08","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["BIIB"]}