{"nct_id":"NCT05228821","title":"Voxelotor Brain Oxygenation and Neurocognitive Study","status":"WITHDRAWN","status_verified_date":"2024-08","start_date":"2023-08-09","start_date_type":"ACTUAL","primary_completion_date":"2023-08-23","primary_completion_date_type":"ACTUAL","completion_date":"2023-08-23","completion_date_type":"ACTUAL","phases":["PHASE4"],"tickers":["PFE"]}