{"nct_id":"NCT04241068","title":"A Study to Evaluate Safety and Tolerability of Aducanumab in Participants With Alzheimer's Disease Who Had Previously Participated in the Aducanumab Studies 221AD103, 221AD301, 221AD302 and 221AD205","status":"TERMINATED","status_verified_date":"2025-01","start_date":"2020-03-02","start_date_type":"ACTUAL","primary_completion_date":"2024-07-22","primary_completion_date_type":"ACTUAL","completion_date":"2024-07-22","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["BIIB"]}