{"nct_id":"NCT05314023","title":"Immunogenicity and Safety of V503 in Chinese Males 9 Through 19 Years Old (V503-053)","status":"ACTIVE_NOT_RECRUITING","status_verified_date":"2023-01","start_date":"2022-05-07","start_date_type":"ACTUAL","primary_completion_date":"2029-02-19","primary_completion_date_type":"ESTIMATED","completion_date":"2029-02-19","completion_date_type":"ESTIMATED","phases":["PHASE3"],"tickers":["MRK"]}