HUTCHMED Highlights SACHI Phase III Study Data Presented at the 2025 ASCO Annual Meeting

Core Insights - The SACHI Phase III study demonstrated that the combination of savolitinib and osimertinib significantly improves progression-free survival (PFS) in patients with EGFR mutation-positive non-small cell lung cancer (NSCLC) with MET amplification compared to chemotherapy [1][4][9] Study Overview - SACHI is a Phase III clinical trial focusing on the combination of savolitinib and osimertinib for treating patients with locally advanced or metastatic EGFR mutation-positive NSCLC with MET amplification after progression on first-line EGFR inhibitor therapy [2] Efficacy Results - In the intention-to-treat population, the median PFS was 8.2 months for the savolitinib plus osimertinib group versus 4.5 months for the chemotherapy group, with a hazard ratio (HR) of 0.34 [4] - The independent review committee assessed median PFS at 7.2 months for the combination therapy compared to 4.2 months for chemotherapy, with an HR of 0.40 [4] - The objective response rate (ORR) was 58% for the combination group compared to 34% for chemotherapy, and the disease control rate (DCR) was 89% versus 67% [5] Safety Profile - The combination therapy exhibited a tolerable safety profile, with treatment-emergent adverse events of Grade 3 or above occurring in 57% of patients in both the savolitinib plus osimertinib and chemotherapy groups [7][8] Regulatory Status - The Independent Data Monitoring Committee concluded that the study met its primary endpoint of PFS, leading to the conclusion of patient enrollment [9] - A New Drug Application (NDA) for the combination therapy has been accepted and granted priority review by the China National Medical Products Administration (NMPA) [9] Company Background - HUTCHMED is an innovative biopharmaceutical company focused on the discovery and commercialization of targeted therapies and immunotherapies for cancer and immunological diseases [13]