{"nct_id":"NCT00031083","title":"Dose Escalation Study to Determine the Safety of IFN-Beta Gene Transfer in the Treatment of Grade III & Grade IV Gliomas","status":"COMPLETED","status_verified_date":"2020-11","start_date":"2002-04-02","start_date_type":"ACTUAL","primary_completion_date":null,"primary_completion_date_type":null,"completion_date":"2003-10-10","completion_date_type":"ACTUAL","phases":["PHASE1"],"tickers":["BIIB"]}