{"nct_id":"NCT06555419","title":"A Study to Find Out How Nusinersen is Processed in the Body When Given Through the ThecaFlex DRx™ System in Adult and Pediatric Participants With Spinal Muscular Atrophy (PIERRE-PK)","status":"RECRUITING","status_verified_date":"2025-09","start_date":"2025-01-16","start_date_type":"ACTUAL","primary_completion_date":"2026-05-15","primary_completion_date_type":"ESTIMATED","completion_date":"2026-05-15","completion_date_type":"ESTIMATED","phases":["PHASE1"],"tickers":["BIIB"]}