Summit Therapeutics Inc. (NASDAQ:SMMT) today noted that its partner Akeso Inc. announced positive overall survival (OS) results from the randomized, double-blind Phase III HARMONi-2 study evaluating ivonescimab monotherapy against pembrolizumab monotherapy in patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) whose tumors have positive PD-L1 expression. HARMONi-2 (AK112-303) is a single-region, multi-center Phase III study conducted in China and sponsored by Akeso, with all relevant data exclusively generated, managed, and analyzed by Akeso.

In this preplanned analysis of OS, a secondary endpoint in the HARMONi-2 study, Akeso reported that ivonescimab monotherapy demonstrated a statistically significant improvement compared to pembrolizumab monotherapy. Results from this HARMONi-2 analysis are scheduled to be presented at an upcoming medical conference.

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