Akeso's ivonescimab beats durvalumab in biliary tract cancer trial

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Ivonescimab Plus Chemotherapy Demonstrates Statistically Significant Overall Survival Benefit Compared to Durvalumab Plus Chemotherapy in First-Line Advanced Biliary Tract Cancer in Single-Region Tria

August 25, 2026 6:00 PM EDT

HARMONi-GI1 Conducted in China by Akeso Is First Known Phase III Study in Advanced BTC to Demonstrate OS Superiority vs. Anti-PD-(L)1 Plus Chemotherapy

First Phase III Ivonescimab Readout beyond NSCLC Demonstrates Significant OS Benefit

MIAMI--(BUSINESS WIRE)-- Summit Therapeutics Inc. (NASDAQ: SMMT) today noted that its partner Akeso Inc. announced positive topline results from the randomized Phase III HARMONi-GI1 study (AK112-309) evaluating ivonescimab plus chemotherapy compared with durvalumab plus chemotherapy as a first-line treatment for patients with advanced biliary tract cancer (BTC).... More