{"nct_id":"NCT03861273","title":"A Study to Evaluate the Efficacy and Safety of Factor IX Gene Therapy With PF-06838435 in Adult Males With Moderately Severe to Severe Hemophilia B","status":"ACTIVE_NOT_RECRUITING","status_verified_date":"2025-09","start_date":"2019-07-29","start_date_type":"ACTUAL","primary_completion_date":"2022-11-16","primary_completion_date_type":"ACTUAL","completion_date":"2031-02-25","completion_date_type":"ESTIMATED","phases":["PHASE3"],"tickers":["PFE"]}