{"nct_id":"NCT03221426","title":"Study of Pembrolizumab (MK-3475) Plus Chemotherapy Versus Placebo Plus Chemotherapy in Participants With Gastric or Gastroesophageal Junction (GEJ) Adenocarcinoma (MK-3475-585/KEYNOTE-585)","status":"COMPLETED","status_verified_date":"2025-06","start_date":"2017-10-09","start_date_type":"ACTUAL","primary_completion_date":"2024-02-16","primary_completion_date_type":"ACTUAL","completion_date":"2025-04-23","completion_date_type":"ACTUAL","phases":["PHASE3"],"tickers":["MRK"]}