Savolitinib

HONG KONG and FLORHAM PARK, N.J., April 22, 2025 (GLOBE NEWSWIRE) -- HUTCHMED (China) Limited (“HUTCHMED”) (Nasdaq/AIM:​HCM; HKEX:​13) today announces that it has completed enrollment of the registration phase of its Phase II trial of savolitinib in gastric cancer patients with MET amplification. This clinical trial is a single-arm, multi-center, open-label, Phase II registration study to evaluate the efficacy, safety and tolerability of savolitinib in treating gastric cancer or gastroesophageal junction (“GEJ”) adenocarcinoma patients with MET amplification. Primary endpoint is objective response rate (“ORR”) evaluated by the Independent Review Committee (“IRC”) (RECIST 1.1). Secondary endpoints include progression free survival (PFS) and incidence of various adverse events (AE), among others. A total of 64 patients have been enrolled in the study. Further details may be found at clinicaltrials.gov using identifier NCT04923932. As reported at the American Association for Cancer Research Annual Meeting, interim results from the study showed a 45% ORR confirmed by IRC and a 50% ORR in patients with high MET gene copy number. 4-month duration of response (DOR) rate was 85.7% with median follow up time of 5.5 months. The most common grade 3 or higher treatment-related adverse events (“TRAE”) (≥ 5%) were platelet count decreased, hypersensitivity, anemia, neutropenia and hepatic function abnormal. Only one patient discontinued treatment due to grade 4 liver function abnormal (TRAE) and no patient died due to TRAE. The China’s National Medical Products Administration (“NMPA”) has granted Breakthrough Therapy Designation to savolitinib for the treatment of locally advanced or metastatic gastric cancer or GEJ adenocarcinoma patients with MET amplification who have failed at least two lines of standard therapies. If positive, HUTCHMED may initiate plans to apply for marketing authorization of savolitinib for gastric cancer in China in late 2025. About Gastric Cancer with MET Amplification MET-driven gastric cancer has a very poor prognosis.1 It is estimated that MET amplification accounts for approximately 4-6% of gastric cancer patients.2,3 The annual incidence of MET amplification gastric cancer is estimated to be approximately 18,000 in China.4 The ongoing registration trial follows multiple Phase II studies conducted in Asia to study savolitinib in MET-driven gastric cancer patients, including VIKTORY.3 The VIKTORY study reported a 50% ORR in patients whose tumors harbored MET amplification and were treated with savolitinib monotherapy. About Savolitinib Savolitinib is an oral, potent, and highly selective MET tyrosine kinase inhibitor (“TKI”) being jointly developed by AstraZeneca and HUTCHMED and commercialized by AstraZeneca. MET is a tyrosine kinase receptor that has an essential role in normal cell development.5 Savolitinib blocks atypical activation of the MET receptor tyrosine kinase pathway that occurs because of mutations (such as exon 14 skipping alterations or other point mutations), gene amplification or protein overexpression. Savolitinib is approved in China and is marketed under the brand name ORPATHYS® by our partner, AstraZeneca, for the treatment of adult patients with locally advanced or metastatic non-small cell lung cancer (NSCLC) with MET exon 14 skipping alteration, representing the first selective MET inhibitor approved in China. It has been included in the National Reimbursement Drug List of China (NRDL) since March 2023. It is currently under clinical development for multiple tumor types, including lung, kidney, and gastric cancers as a single treatment and in combination with other medicines. About HUTCHMED HUTCHMED (Nasdaq/AIM:​HCM; HKEX:​13) is an innovative, commercial-stage, biopharmaceutical company. It is committed to the discovery and global development and commercialization of targeted therapies and immunotherapies for the treatment of cancer and immunological diseases. Since inception it has focused on bringing drug candidates from in-house discovery to patients around the world, with its first three medicines marketed in China, the first of which is also approved around the world including in the US, Europe and Japan. For more information, please visit: www.hutch-med.com or follow us on LinkedIn. Forward-Looking Statements This press release contains forward-looking statements within the meaning of the “safe harbor” provisions of the US Private Securities Litigation Reform Act of 1995. These forward-looking statements reflect HUTCHMED’s current expectations regarding future events, including its expectations regarding the therapeutic potential of savolitinib, the further clinical development for savolitinib, its expectations as to whether any studies on savolitinib would meet their primary or secondary endpoints, and its expectations as to the timing of the completion and the release of results from such studies. Forward-looking statements involve risks and uncertainties. Such risks and uncertainties include, among other things, assumptions regarding enrollment rates and the timing and availability of subjects meeting a study’s inclusion and exclusion criteria; changes to clinical protocols or regulatory requirements; unexpected adverse events or safety issues; the ability of savolitinib, including as a combination therapy, to meet the primary or secondary endpoint of a study, to obtain regulatory approval in different jurisdictions and to gain commercial acceptance after obtaining regulatory approval; the potential market of savolitinib for a targeted indication and the sufficiency of funding. Existing and prospective investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. For further discussion of these and other risks, see HUTCHMED’s filings with the US Securities and Exchange Commission, The Stock Exchange of Hong Kong Limited and on AIM. HUTCHMED undertakes no obligation to update or revise the information contained in this press release, whether as a result of new information, future events or circumstances or otherwise. Medical Information This press release contains information about products that may not be available in all countries, or may be available under different trademarks, for different indications, in different dosages, or in different strengths. Nothing contained herein should be considered a solicitation, promotion or advertisement for any prescription drugs including the ones under development. CONTACTS Investor Enquiries+852 2121 8200 / ir@hutch-med.com Media Enquiries FTI Consulting –+44 20 3727 1030 / HUTCHMED@fticonsulting.comBen Atwell / Alex Shaw +44 7771 913 902 (Mobile) / +44 7779 545 055 (Mobile)Brunswick – Zhou Yi+852 9783 6894 (Mobile) / HUTCHMED@brunswickgroup.com Panmure LiberumNominated Advisor and Joint BrokerAtholl Tweedie / Freddy Crossley / Rupert Dearden+44 20 7886 2500 HSBCJoint BrokerSimon Alexander / Alina Vaskina / Arnav Kapoor+44 20 7991 8888 CavendishJoint BrokerGeoff Nash / Nigel Birks+44 20 7220 0500 1 Catenacci DV, Ang A, Liao WL, et al. MET tyrosine kinase receptor expression and amplification as prognostic biomarkers of survival in gastroesophageal adenocarcinoma. Cancer. 2017;123(6):1061-1070. doi:10.1002/cncr.304372 Lee J, Kim ST, Kim K, et al. Tumor Genomic Profiling Guides Patients with Metastatic Gastric Cancer to Targeted Treatment: The VIKTORY Umbrella Trial. Cancer Discov. 2019;9(10):1388-1405. doi:10.1158/2159-8290.CD-19-0443 Van Cutsem E, Karaszewska B, Kang YK, et al. A Multicenter Phase II Study of AMG 337 in Patients with MET-Amplified Gastric/Gastroesophageal Junction/Esophageal Adenocarcinoma and Other MET-Amplified Solid Tumors. Clin Cancer Res. 2019;25(8):2414-2423. doi:10.1158/1078-0432.CCR-18-13374 Global Cancer Observatory. China Fact Sheet. https://gco.iarc.who.int/media/globocan/factsheets/populations/160-china-fact-sheet.pdf. Accessed April 7, 2025.5 Uchikawa E, et al. Structural basis of the activation of c-MET receptor. Nat Commun. 2021;12(4074).

Approval based on AEGEAN Phase III trial results which showed a 32% reduction in the risk of recurrence, progression or death vs. neoadjuvant chemotherapy alone LONDON, UK I April 04, 2025 I AstraZeneca’s Imfinzi (durvalumab) in combination with chemotherapy has been approved in the European Union (EU) for the treatment of adults with resectable non-small cell lung cancer (NSCLC) at high risk of recurrence and no epidermal growth factor receptor (EGFR) mutations or anaplastic lymphoma kinase (ALK) rearrangements. In this regimen, patients are treated with Imfinzi in combination with neoadjuvant chemotherapy before surgery and as adjuvant monotherapy after surgery. The approval by the European Commission follows the positive opinion of the Committee for Medicinal Products for Human Use and is based on results from the pivotal AEGEAN trial, which were published in The New England Journal of Medicine . Each year in Europe, there are more than 450,000 people diagnosed with lung cancer. 1 Around 25-30% of all patients with NSCLC, the most common form of lung cancer, are diagnosed at an early stage to have surgery with curative intent. 2-3 However, the majority of patients with resectable disease will develop recurrence and only 36-46% of patients with Stage II disease will survive for five years. 4-5 This decreases to 24% for patients with Stage IIIA disease and 9% for patients with Stage IIIB disease, reflecting a high unmet medical need. 4 Professor Martin Reck, Head of the Department of Thoracic Oncology at the Lung Clinic Grosshansdorf, Germany, member of the AEGEAN Steering Committee and investigator in the trial, said: “Today’s approval provides an important new treatment option that should become a backbone combination approach for patients in Europe with resectable non-small cell lung cancer, who have historically faced high rates of recurrence and a poor prognosis. When added to neoadjuvant chemotherapy, perioperative durvalumab meaningfully improved outcomes in this curative-intent setting, significantly extending the time patients lived without their cancer returning.” Dave Fredrickson, Executive Vice President, Oncology Haematology Business Unit, AstraZeneca, said: “Today’s approval marks an important step towards improving outcomes for patients in Europe with resectable non-small cell lung cancer, enabling more patients to access this important immunotherapy-based regimen. This new indication builds on the established role of Imfinzi in unresectable disease and underscores our commitment to transforming care in the early stages of lung cancer where there is the greatest potential for cure.” Results from a planned interim analysis of event-free survival (EFS) showed a statistically significant and clinically meaningful 32% reduction in the risk of recurrence, progression events or death versus neoadjuvant chemotherapy alone in patients treated with the Imfinzi -based perioperative regimen (32% data maturity; EFS hazard ratio [HR] 0.68; 95% confidence interval [CI] 0.53-0.88; p=0.003902). In a final analysis of pathologic complete response (pCR), treatment with Imfinzi plus neoadjuvant chemotherapy before surgery resulted in a pCR rate of 17.2% versus 4.3% for patients treated with neoadjuvant chemotherapy alone (difference in pCR 13.0%; 95% CI 8.7-17.6). Additionally, interim overall survival (OS) results presented at the 2024 World Conference on Lung Cancer showed a favourable trend with the Imfinzi- basedperioperative regimen (35% data maturity; median OS: not reached [NR] versus 53.2 months; HR=0.89; 95% CI 0.70-1.14). The OS data were not tested for statistical significance at this interim analysis and will continue to be assessed as a key secondary endpoint at final analysis. Imfinzi was generally well tolerated, and no new safety signals were observed in the neoadjuvant and adjuvant settings. Further, adding Imfinzi to neoadjuvant chemotherapy was consistent with the known profile for this combination and did not compromise patients’ ability to complete surgery versus chemotherapy alone. Imfinzi is approved in the US, China and several other countries in this setting based on the AEGEAN results. Regulatory applications are currently under review in Japan and additional countries in this indication. Imfinzi is the global standard of care based on OS in the curative-intent setting of unresectable, Stage III NSCLC in patients whose disease as not progressed after chemoradiotherapy (CRT) based on the PACIFIC Phase III trial. Notes Lung cancer Lung cancer is the leading cause of cancer death among both men and women, accounting for about one-fifth of all cancer deaths. 6-7 Lung cancer is broadly split into NSCLC and small cell lung cancer (SCLC), with 80-85% of patients diagnosed with NSCLC. 8-9 An estimated 28,000 people are treated for resectable NSCLC across the five major European countries each year. 10 Early-stage lung cancer diagnoses are often only made when the cancer is found on imaging for an unrelated condition. 11-12 The majority of patients with resectable disease eventually develop recurrence despite complete tumour resection and adjuvant chemotherapy. 5 AEGEAN AEGEAN is a randomised, double-blind, multi-centre, placebo-controlled global Phase III trial evaluating Imfinzi as perioperative treatment for patients with resectable Stage IIA-IIIB (Eighth Edition AJCC Cancer Staging Manual) NSCLC, irrespective of PD-L1 expression. Perioperative therapy includes treatment before and after surgery, also known as neoadjuvant/adjuvant therapy. In the trial, 802 patients were randomised to receive a 1500mg fixed dose of Imfinzi plus chemotherapy or placebo plus chemotherapy every three weeks for four cycles prior to surgery, followed by Imfinzi or placebo every four weeks (for up to 12 cycles) after surgery. Patients with known EGFR or ALK genomic tumour aberrations were excluded from the primary efficacy analyses. In the AEGEAN trial, the primary endpoints were pCR, defined as no viable tumour in the resection specimen (including lymph nodes) following neoadjuvant therapy, and EFS, defined as the time from randomisation to an event like tumour recurrence, progression precluding definitive surgery, or death. Key secondary endpoints were major pathologic response, defined as residual viable tumour of less than or equal to 10% in the resected primary tumour following neoadjuvant therapy, disease-free survival, OS, safety and quality of life. The final pathologic response analyses were performed after all patients had the opportunity for surgery and pathology assessment per the trial protocol. The trial enrolled participants from 264 centres in more than 25 countries including in the US, Canada, Europe, South America and Asia. Imfinzi Imfinzi (durvalumab) is a human monoclonal antibody that binds to the PD-L1 protein and blocks the interaction of PD-L1 with the PD-1 and CD80 proteins, countering the tumour’s immune-evading tactics and releasing the inhibition of immune responses. In addition to its indications in resectable, early-stage (IIA-IIIB) NSCLC and unresectable, Stage III NSCLC, Imfinzi is also approved for use in combination with a short course of Imjudo (tremelimumab) and chemotherapy for the treatment of metastatic NSCLC. Imfinzi is also approved for limited-stage SCLC in patients whose disease has not progressed following concurrent platinum-based CRT; and in combination with chemotherapy (etoposide and either carboplatin or cisplatin) for the treatment of extensive-stage SCLC. Imfinzi is also approved in combination with chemotherapy (gemcitabine plus cisplatin) in locally advanced or metastatic biliary tract cancer and in combination with Imjudo in unresectable hepatocellular carcinoma (HCC). Imfinzi is also approved as a monotherapy in unresectable HCC in Japan and the EU. In March 2025, perioperative Imfinzi added to standard-of-care chemotherapy met the primary endpoint of EFS in the MATTERHORN Phase III trial in resectable gastric and gastroesophageal junction cancers. Imfinzi is also approved as a perioperative treatment in combination with neoadjuvant chemotherapy for muscle-invasive bladder cancer in the US. Imfinzi in combination with chemotherapy followed by Imfinzi monotherapy is approved as a 1st-line treatment for primary advanced or recurrent endometrial cancer (mismatch repair deficient disease only in US and EU). Imfinzi in combination with chemotherapy followed by Lynparza (olaparib) and Imfinzi is approved for patients with mismatch repair proficient advanced or recurrent endometrial cancer in EU and Japan. Since the first approval in May 2017, more than 374,000 patients have been treated with Imfinzi . As part of a broad development programme, Imfinzi is being tested as a single treatment and in combinations with other anti-cancer treatments for patients with SCLC, NSCLC, bladder cancer, breast cancer, several gastrointestinal and gynaecologic cancers, and other solid tumours. AstraZeneca in lung cancer AstraZeneca is working to bring patients with lung cancer closer to cure through the detection and treatment of early-stage disease, while also pushing the boundaries of science to improve outcomes in the resistant and advanced settings. By defining new therapeutic targets and investigating innovative approaches, the Company aims to match medicines to the patients who can benefit most. The Company’s comprehensive portfolio includes leading lung cancer medicines and the next wave of innovations, including Tagrisso (osimertinib) and Iressa (gefitinib); Imfinzi and Imjudo ; Enhertu (trastuzumab deruxtecan) and Datroway (datopotamab deruxtecan) in collaboration with Daiichi Sankyo; Orpathys (savolitinib) in collaboration with HUTCHMED; as well as a pipeline of potential new medicines and combinations across diverse mechanisms of action. AstraZeneca is a founding member of the Lung Ambition Alliance, a global coalition working to accelerate innovation and deliver meaningful improvements for people with lung cancer, including and beyond treatment. AstraZeneca in immuno-oncology (IO) AstraZeneca is a pioneer in introducing the concept of immunotherapy into dedicated clinical areas of high unmet medical need. The Company has a comprehensive and diverse IO portfolio and pipeline anchored in immunotherapies designed to overcome evasion of the anti-tumour immune response and stimulate the body’s immune system to attack tumours. AstraZeneca strives to redefine cancer care and help transform outcomes for patients with Imfinzi as a monotherapy and in combination with Imjudo as well as other novel immunotherapies and modalities. The Company is also investigating next-generation immunotherapies like bispecific antibodies and therapeutics that harness different aspects of immunity to target cancer, including cell therapy and T-cell engagers. AstraZeneca is pursuing an innovative clinical strategy to bring IO-based therapies that deliver long-term survival to new settings across a wide range of cancer types. The Company is focused on exploring novel combination approaches to help prevent treatment resistance and drive longer immune responses. With an extensive clinical programme, the Company also champions the use of IO treatment in earlier disease stages, where there is the greatest potential for cure. AstraZeneca in oncology AstraZeneca is leading a revolution in oncology with the ambition to provide cures for cancer in every form, following the science to understand cancer and all its complexities to discover, develop and deliver life-changing medicines to patients. The Company’s focus is on some of the most challenging cancers. It is through persistent innovation that AstraZeneca has built one of the most diverse portfolios and pipelines in the industry, with the potential to catalyse changes in the practice of medicine and transform the patient experience. AstraZeneca has the vision to redefine cancer care and, one day, eliminate cancer as a cause of death. AstraZeneca AstraZeneca (LSE/STO/Nasdaq: AZN) is a global, science-led biopharmaceutical company that focuses on the discovery, development, and commercialisation of prescription medicines in Oncology, Rare Diseases, and BioPharmaceuticals, including Cardiovascular, Renal & Metabolism, and Respiratory & Immunology. Based in Cambridge, UK, AstraZeneca’s innovative medicines are sold in more than 125 countries and used by millions of patients worldwide. Please visit astrazeneca.com and follow the Company on social media @AstraZeneca . References 1. Ferlay J, et al. Cancer incidence and mortality patterns in Europe: Estimates for 40 countries and 25 major cancers in 2018. Eur J Cancer . 2018;103:356-387. 2. Cagle PT, et al. Lung Cancer Biomarkers: Present Status and Future Developments. Arch Pathol Lab Med . 2013;137(9):1191-1198. 3. Le Chevalier T. Adjuvant Chemotherapy for Resectable Non-Small-Cell Lung Cancer: Where is it Going? Ann Oncol . 2010;21(suppl 7):vii196-198. 4. Goldstraw P, et al. The IASLC Lung Cancer Staging Project: proposals for the revision of the TNM stage groupings in the forthcoming (seventh) edition of the TNM Classification of malignant tumours. J Thorac Oncol . 2007;2(8):706-14. 5. Pignon JP, et al. Lung Adjuvant Cisplatin Evaluation: A Pooled Analysis by the LACE Collaborative Group. J Clin Oncol . 2008;26(21):3552-3559. 6. World Health Organization. International Agency for Research on Cancer. Lung Fact Sheet. Available at: https://gco.iarc.who.int/media/globocan/factsheets/cancers/15-trachea-bronchus-and-lung-fact-sheet.pdf . Accessed April 2025. 7. World Health Organization. International Agency for Research on Cancer. All Cancers Fact Sheet. Available at: https://gco.iarc.who.int/media/globocan/factsheets/cancers/39-all-cancers-fact-sheet.pdf . Accessed April 2025. 8. LUNGevity Foundation. Types of Lung Cancer. Available at: https://www.lungevity.org/for-patients-caregivers/lung-cancer-101/types-of-lung-cancer . Accessed April 2025. 9. Cheema PK, et al. Perspectives on treatment advances for stage III locally advanced unresectable non-small-cell lung cancer. Curr Oncol . 2019;26(1):37-42. 10. AstraZeneca PLC. Investor Relations Epidemiology Spreadsheet. Available at: https://www.astrazeneca.com/investor-relations.html . Accessed April 2025. 11. Sethi S, et al. Incidental Nodule Management – Should There Be a Formal Process? J Thorac Dis . 2016:8(Suppl 6);S494-S497. 12. LUNGevity Foundation. Screening and Early Detection. Available at: https://lungevity.org/for-patients-caregivers/lung-cancer-101/screening-early-detection . Accessed April 2025. SOURCE: AstraZeneca