{"nct_id":"NCT03892980","title":"Robotic-Assisted da Vinci System Prophylactic Nipple-Sparing Mastectomy","status":"RECRUITING","status_verified_date":"2025-06","start_date":"2021-03-26","start_date_type":"ACTUAL","primary_completion_date":"2027-04-30","primary_completion_date_type":"ESTIMATED","completion_date":"2029-12-30","completion_date_type":"ESTIMATED","phases":["NA"],"tickers":["ISRG"]}