A Study to Evaluate the Safety and Efficacy of Pumitamig in Combination With Chemotherapy Versus Nivolumab in Combination With Chemotherapy in Participants With Previously Untreated Advanced or Metastatic Gastric, Gastroesophageal Junction, or Esophageal Adenocarcinoma (ROSETTA Gastric-204)
Trial Parameters
Brief Summary
The purpose of this study is to evaluate the safety and efficacy of Pumitamig in combination with chemotherapy versus Nivolumab in combination with chemotherapy in participants with previously untreated advanced or metastatic gastric, gastroesophageal junction, or esophageal adenocarcinoma
Eligibility Criteria
Inclusion Criteria * Participants must be previously untreated with systemic treatment for advanced/metastatic disease, histologically or cytologically confirmed advanced or metastatic gastric cancer (GC), gastroesophageal junction adenocarcinoma (GEJC) or distal esophageal adenocarcinoma (EAC). GEJ involvement can be confirmed via biopsy, endoscopy, or imaging. * Participants must have a documented programmed cell death-(ligand)1 (PD-L1) ≥ 1. * Participants must have documented human epidermal growth factor receptor 2 (HER2)-negative cancer, as determined according to local guidelines. * Participants must have measurable disease as defined by RECIST v1.1. Exclusion Criteria * Participants must not have untreated known central nervous system (CNS) metastases. * Participants must not have significant cardiovascular disease, such as myocardial infarction, unstable angina, arterial thrombosis, cerebrovascular accident within 6 months prior to randomization, uncontrolled hypertension (≥ 16