{"nct_id":"NCT04859582","title":"Pembrolizumab (MK-3475) Plus Chemotherapy Versus Placebo Plus Chemotherapy in Participants Gastric or Gastroesophageal Junction (GEJ) Adenocarcinoma (MK-3475-859/KEYNOTE-859)-China Extension","status":"WITHDRAWN","status_verified_date":"2021-12","start_date":"2018-11-08","start_date_type":"ACTUAL","primary_completion_date":"2024-11-29","primary_completion_date_type":"ESTIMATED","completion_date":"2024-11-29","completion_date_type":"ESTIMATED","phases":["PHASE3"],"tickers":["MRK"]}