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ZAP-HETERO study of zolbetuximab + trastuzumab + CapeOX with pembrolizumab by PD-L1 status in HER2-positive and CLDN18.2-positive advanced gastric/GEJ cancer

jRCT2031260183Phase 2Recruiting

Sponsor
Astellas Pharma
Start
Aug 2026
Modality
Monoclonal Antibodies → Antibody-Based Therapeutics, Immune Checkpoint Inhibitors → Monoclonal Antibodies → Antibody-Based Therapeutics, Recombinant Proteins and Enzymes
Countries
1
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Overview

Phase 2, open-label trial of zolbetuximab, trastuzumab, pembrolizumab, oxaliplatin and capecitabine in gastric adenocarcinoma and gastroesophageal junction adenocarcinoma (2 cohorts), sponsored by Astellas Pharma. Primary endpoint: Progression-free survival. Started Aug 2026; status: recruiting.

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Drugs

zolbetuximabtrastuzumabpembrolizumaboxaliplatincapecitabine
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Conditions

gastric adenocarcinomagastroesophageal junction adenocarcinoma

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