Exhibit 99.1

Press Release
HUTCHMED Announces Submission of US NDA for ORPATHYS® plus TAGRISSO® in MET-Driven EGFR-Mutated Lung Cancer
— Filing seeks approval for a biomarker-directed, all-oral treatment option for patients whose tumors have MET overexpression or amplification, after progression on an EGFR-TKI therapy —
— Application supported by SAFFRON, the first global Phase III trial to demonstrate statistically significant and clinically meaningful improvements in progression-free and overall survival in this setting —
— SAFFRON builds on evidence from the SACHI Phase III and SAVANNAH Phase II trials —
Hong Kong, Shanghai & Florham Park, NJ — Tuesday, September 29, 2026: HUTCHMED (China) Limited (“HUTCHMED”) (Nasdaq/AIM:HCM; HKEX:13) today announces that AstraZeneca has submitted a New Drug Application (“NDA”) to the US Food and Drug Administration (“FDA”) for ORPATHYS® (savolitinib) plus TAGRISSO® (osimertinib) for the treatment of patients with locally advanced or metastatic non-small cell lung cancer (“NSCLC”) whose tumors have MET overexpression or amplification, and who had disease progression on or after an epidermal growth factor receptor (“EGFR”) tyrosine kinase inhibitor (“TKI”) therapy.
The NDA is supported by the global SAFFRON Phase III trial. SAFFRON showed ORPATHYS® plus TAGRISSO® demonstrated a statistically significant and clinically meaningful improvement in both progression-free survival (“PFS”) and overall survival (“OS”) versus doublet platinum-based chemotherapy in patients who progressed on treatment with TAGRISSO®. The safety profile was consistent with the known profiles of each medicine, and there were no new safety concerns. These results will be presented in a Presidential Symposium at the upcoming European Society for Medical Oncology (ESMO) Congress 2026.
Third-generation EGFR tyrosine kinase inhibitors (“TKIs”) have significantly improved outcomes for patients with EGFRm NSCLC. However, MET overexpression or amplification is one of the most common mechanisms of resistance on third-generation EGFR-TKI treatment. MET-driven progression is associated with poor prognosis, and there remains a significant unmet need for effective and well-tolerated treatment options in this setting.
Mr Johnny Cheng, Acting Chief Executive Officer and Chief Financial Officer of HUTCHMED, said: “This filing is an important step toward potentially bringing ORPATHYS® plus TAGRISSO® to patients in the US, after its approval in China based on the SACHI Phase III trial. The success of the global SAFFRON Phase III trial reflects the long-standing collaboration between HUTCHMED and AstraZeneca in addressing MET-driven progression in EGFR-mutated lung cancer. We remain committed to supporting the regulatory review and making this biomarker-directed, chemotherapy-free oral combination available to eligible patients.”
ORPATHYS® is being jointly developed by AstraZeneca and HUTCHMED and is commercialized by AstraZeneca.
About NSCLC and MET aberrations
Lung cancer is the leading cause of cancer death globally, accounting for almost one in four (23%) cancer deaths.1 Lung cancer is broadly split into NSCLC and small cell lung cancer, with 80-85% of patients diagnosed with NSCLC.2 Approximately 75% of NSCLC patients are diagnosed with advanced disease.3 Additionally, about 10-15% of NSCLC patients in the US and Europe, and 30-40% of patients in Asia, have EGFRm NSCLC.4,5,6
MET is a tyrosine kinase receptor that has an essential role in normal cell development.7 MET overexpression or amplification can lead to tumor growth and the metastatic progression of cancer cells.7,8 An estimated 34% of tumors will develop high levels of MET overexpression or amplification after progression on a third-generation EGFR TKI.1