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benzinga Corporate Catalyst Impact 85/100 ● positive

BeOne Medicines' Topline Data From Second Interim Analysis of Phase 3 HERIZON-GEA-01 Trial of ZIIHERA (zanidatamab) Plus Chemo, With and Without TEVIMBRA (tislelizumab) Show Statistically Significant and Clinically Meaningful Improvement in Overall Survival Trastuzumab Plus Chemo for HER2+ locally advanced or metastatic gastroesophageal adenocarcinoma

Aug 31, 2026, 10:09 AM UTC · Primary ticker $ONC

BeOne Medicines announced positive topline results from the second interim analysis of its Phase 3 HERIZON-GEA-01 trial, showing ZIIHERA plus chemotherapy significantly improved overall survival in HER2+ gastroesophageal adenocarcinoma. This positive data reinforces the drug's efficacy and potential market position, especially when combined with TEVIMBRA, and could lead to regulatory approvals and increased revenue for BeOne Medicines.

BeOne Medicines reported highly positive results from the second interim analysis of its Phase 3 HERIZON-GEA-01 trial for ZIIHERA, both as a monotherapy with chemotherapy and in combination with TEVIMBRA. The statistically significant and clinically meaningful improvement in overall survival for ZIIHERA plus chemotherapy, meeting a primary endpoint, is a major win. This data strengthens the drug's profile and increases the likelihood of regulatory approval, which could significantly boost BeOne Medicines' future revenue and market share in the oncology space. For traders, this presents a short-term opportunity for ONC stock to rally on the positive news, with long-term implications tied to successful commercialization and market adoption of ZIIHERA.

$ONC positive Positive Phase 3 trial results for key drug
Source: benzinga
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