{"nct_id":"NCT00831649","title":"A Phase II, Multicenter, Open-Label, Long-Term Study of the Safety, Tolerability, and Efficacy of Intravenous Natalizumab in Subjects With Rheumatoid Arthritis Who Have Previously Participated in Study ELN100226-RA201","status":"TERMINATED","status_verified_date":"2009-01","start_date":"2004-09","start_date_type":null,"primary_completion_date":"2005-02","primary_completion_date_type":"ACTUAL","completion_date":null,"completion_date_type":null,"phases":["PHASE2"],"tickers":["BIIB"]}