What this phase means
Phase 2/3: earlier tests looked promising enough to expand. This stage asks, in a larger group, whether the treatment really works and is safe enough to seek approval.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Pumitamig, Folfox, or Capox. The registry lists allocation as randomized. This study wants to measure the safety and how well it works 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
They plan to enroll about 690 people at 161 sites. Taking part typically means taking a study drug (or dummy pill) plus check-ins.
Official title (unrewritten)
ROSETTA Gastric-204: A Blinded, Randomized, Phase 2/3 Study 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
Interventions: Pumitamig, Folfox, Capox, Nivolumab
Primary outcome (registry wording): Objective Response (OR) (confirmed complete response (CR) or partial response (PR)) by Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 per investigator assessment