Trastuzumab--ANNS(Synthon BV)

基于DESTINY-Gastric04 III期试验结果，与雷莫西尤单抗+紫杉醇相比，优赫得®可为患者带来具有显著统计学差异和临床意义的总生存期（OS）改善，两年OS率实现翻倍首个且唯一*二线治疗不可切除局部晚期或转移性HER2阳性胃癌的靶向HER2的抗体偶联药物中国，上海，2026年1月22日——由阿斯利康和第一三共共同开发与商业化的优赫得®（英文商品名：Enhertu®，通用名：注射用德曲妥珠单抗）获中国国家药品监督管理局（NMPA）批准，本品单药适用于治疗既往接受过一种含曲妥珠单抗治疗方案的局部晚期或转移性HER2阳性成人胃或胃食管结合部腺癌患者。德曲妥珠单抗是由阿斯利康和第一三共联合开发和商业化的一款独特设计靶向HER2的抗体偶联药物（ADC）。本次获批是基于DESTINY-Gastric04 III期试验的积极结果，该研究结果已发表于《新英格兰医学杂志》（NEJM）1。研究显示，对于局部晚期或转移性HER2阳性成人胃或胃食管结合部腺癌患者，与雷莫西尤单抗+紫杉醇相比，德曲妥珠单抗带来具有显著统计学差异和临床意义的总生存期（OS）改善。德曲妥珠单抗组中位OS为14.7个月，雷莫西尤单抗+紫杉醇组为11.4个月（风险比[HR] 0.70，95% 置信区间[CI] 0.55-0.90，p=0.0044），24个月OS率分别为29%和13.9%。德曲妥珠单抗组的确认客观缓解率（ORR）为44.3%，雷莫西尤单抗+紫杉醇组为29.1%。德曲妥珠单抗组中位无进展生存期（PFS）为6.7个月，雷莫西尤单抗+紫杉醇组为5.6个月（HR 0.74，95% CI 0.59-0.92，p=0.0074）。德曲妥珠单抗在DESTINY-Gastric04试验中的安全性特征与既往德曲妥珠单抗在胃癌的临床试验一致，未发现新的安全性问题。我国是胃癌高发国家，发病率与死亡率位居全球前列。统计显示，全球三分之一以上的胃癌病例发生在中国2，约65%的患者在诊断时已为中晚期3，5年生存率为9.4%4。在中国，HER2阳性胃癌约占全部胃癌的13%-18%5,6。对于在一线含曲妥珠单抗方案后出现疾病进展的患者，后续二线治疗的疗效有限。北京大学肿瘤医院消化肿瘤内科主任，DESTINY-Gastric04中国牵头研究者沈琳教授表示：“大多数胃癌患者在诊断时已处于晚期，晚期胃癌患者的生存率较低，治疗难度较大。德曲妥珠单抗此次新适应症获批是中国胃癌治疗领域的又一重要里程碑，填补了国际及我国二线HER2阳性胃癌靶向治疗空白，推动二线HER2阳性胃癌治疗范式从传统化疗向精准靶向治疗的转变。同时，也为临床医生带来了能够延长患者生存期的有效治疗选择，我们有望将这一创新方案应用于更早的治疗阶段，惠及更广泛的患者群体，助力患者跨越生存瓶颈，改善长期预后，获得高质量的长生存。”胃癌在东亚的发病率明显较高，尤其是在中国，全球三分之一以上的病例发生在中国9,10。胃癌是中国第五大常见癌症，2022 年新增了约 35.9 万例病例9。此外，胃癌还是中国癌症相关死亡的第三大原因，2022 年约有 26 万人死于胃癌9。此外，在中国约 65% 的患者在确诊时已是中晚期3。德曲妥珠单抗是⼀款靶向HER2的ADC。采⽤第⼀三共专有的DXd ADC技术设计，是第⼀三共肿瘤产品组合中领先的ADC，也是阿斯利康ADC科学平台中最先进的项⽬。德曲妥珠单抗由⼈源化抗HER2单克隆抗体通过稳定的可裂解四肽连接⼦与拓扑异构酶I抑制剂（喜树碱类衍⽣物DXd）连接组成。阿斯利康（LSE/STO/Nasdaq: AZN）是一家科学至上的全球性生物制药企业，专注于研发、生产及营销处方类药品，重点关注肿瘤、心血管、肾脏及代谢、呼吸及免疫三大主要疾病领域。阿斯利康全球总部位于英国剑桥，业务遍布世界125个以上国家，创新药物惠及全球数百万患者。更多信息，请访问www.astrazeneca.com。阿斯利康自1993年进入中国以来，专注中国患者需求最迫切的治疗领域，包括肿瘤、心血管、肾脏、代谢、呼吸、消化、罕见病、疫苗抗体及自体免疫等，已将40多款创新药物带到中国。阿斯利康中国总部设于上海，并在上海和北京设立全球战略研发中心。同时，公司在北京、广州、杭州、成都、青岛设立区域总部，并在无锡、泰州、青岛、北京建立全球生产供应基地，向全球70多个市场的患者提供优质创新药品。[1] Shitara K, Van Cutsem E, Gümüş M, et al. Trastuzumab Deruxtecan or Ramucirumab plus Paclitaxel in Gastric Cancer. N Engl J Med. 2025;393(4):336-348. doi:10.1056/NEJMoa2503119[2] Sung H, et al. Global Cancer Statistics 2020: GLOBOCAN Estimates of Incidence and Mortality Worldwide for 36 Cancers in 185 Countries. CA Cancer J Clin. 2021;71(3):209-249.[3] Yang, WJ, et al. World J Gastroenterol. Apr 28, 2023; 29(16)_ 2452-2468[4] Wang H, et al. Mol Clin Oncol. 2018;9(4):423-431[5] Van Cutsem E, Bang YJ, Feng-Yi F, et al. HER2 screening data from ToGA: targeting HER2 in gastric and gastroesophageal junction cancer. Gastric Cancer. 2015 Jul;18(3):476-84.[6] Huang D, Lu N, Fan Q, et al. HER2 status in gastric and gastroesophageal junction cancer assessed by local and central laboratories: Chinese results of the HER-EAGLE study. PLoS One. 2013 Nov 14;8(11):e80290.[7] Casamayor M, et al. Targeted literature review of the global burden of gastric cancer. E cancer medical science. 2018;12:883.[8] Iqbal N, et al. Human Epidermal Growth Factor Receptor 2 (HER2) in Cancers: Overexpression and Therapeutic Implications. Mol Biol Int. 2014; 852748.[9] WHO. International Agency of Cancer Research. Cancer Today. Stomach. 2022. Available at: https://gco.iarc.who.int/media/globocan/factsheets/cancers/7-stomach-fact-sheet.pdf. Accessed August 2024.[10] WHO. International Agency of Cancer Research. Cancer Today. China. 2022. Available at: https://gco.iarc.who.int/media/globocan/factsheets/populations/160-china-fact-sheet.pdf. Accessed August 2024.[11] Abrahao-Machado LF, et al. HER2 testing in gastric cancer: An update. World J Gastroenterol. 2016;22(19):4619-4625.[12] Casamayor M, et al. Targeted literature review of the global burden of gastric cancer. E cancer medical science. 2018;12:883.[13] Wang F, et al. The Chinese Society of Clinical Oncology (CSCO): Clinical guidelines for the diagnosis and treatment of gastric cancer, 2023. Cancer Commun (Lond). 2024 Jan;44(1):127-172.

Approval based on three phase 2 trials of Daiichi Sankyo and AstraZeneca’s Enhertu that demonstrated clinically meaningful responses across a broad range of tumors Enhertu now approved for six indications in the EU TOKYO--(BUSINESS WIRE)--Enhertu ® (trastuzumab deruxtecan) has been approved in the European Union (EU) as a monotherapy for the treatment of adult patients with unresectable or metastatic HER2 positive (immunohistochemistry [IHC] 3+) solid tumors who have received prior treatment and who have no satisfactory treatment options. Enhertu is a specifically engineered HER2 directed DXd antibody drug conjugate (ADC) discovered by Daiichi Sankyo (TSE: 4568) and being jointly developed and commercialized by Daiichi Sankyo and AstraZeneca (LSE/STO/NYSE: AZN). The approval by the European Commission follows the positive opinion of the Committee for Medicinal Products for Human Use of the European Medicines Agency and is based on results from subgroups of patients with HER2 positive (IHC 3+) tumors across three phase 2 trials, including DESTINY-PanTumor02 , DESTINY-Lung01 and DESTINY-CRC02 . In DESTINY-PanTumor02, Enhertu demonstrated a confirmed objective response rate (ORR) of 52.3% (95% confidence interval [CI]: 42.6-61.8) and median duration of response (DOR) of 21.1 months (95% CI: 10.6-25.0) in a subgroup of previously treated patients (n=111) with centrally or locally assessed HER2 positive solid tumors, including biliary tract, bladder, cervical, endometrial, ovarian, pancreatic or other tumors. In DESTINY-Lung01, Enhertu demonstrated a confirmed ORR of 52.9% (95% CI: 27.8-77.0) and median DOR of 6.9 months (95% CI: 4.0-9.8) in a subgroup of previously treated patients (n=17) with centrally confirmed HER2 positive non-small cell lung cancer (NSCLC). In DESTINY-CRC02, Enhertu demonstrated a confirmed ORR of 46.9% (95% CI: 34.3-59.8) and median DOR of 5.5 months (95% CI: 4.2-8.1) in a subgroup of previously treated patients (n=64) with centrally confirmed HER2 positive colorectal cancer. “HER2 overexpression occurs across multiple tumor types and is associated with aggressive disease and a poor prognosis. Until now, HER2 directed therapies were only available for specific tumor types," said Benedikt Westphalen, MD, Head of the Precision Oncology Program, Comprehensive Cancer Center of the University of Munich, Germany. “The approval of trastuzumab deruxtecan as a tumor agnostic therapy opens a new treatment option for patients with HER2 positive cancers regardless of where the tumor originated.” In DESTINY-PanTumor02, DESTINY-Lung01 and DESTINY-CRC02, the safety pro Enhertu was consistent with previous clinical trials with no new safety concerns identified. Grade 3 or grade 4 adverse reactions from a pooled safety analysis of patients treated with Enhertu (5.4 mg/kg) across multiple tumor types in clinical studies included neutropenia (18.5%), anemia (9.9%), fatigue (8.2%), leukopenia (5.8%), thrombocytopenia (5.2%), nausea (4.8%), lymphopenia (4.2%), hypokalemia (3.6%), increased transaminases (3.6%), diarrhea (2.5%), vomiting (2.4%), decreased appetite (1.6%), pneumonia (1.4%) and decreased ejection fraction (1.0%). Grade 5 adverse reactions occurred in 1.1% of patients, including interstitial lung disease/pneumonitis (1.0%). “This approval of Enhertu marks a significant milestone in the EU for patients with HER2 positive metastatic solid tumors and establishes the first tumor agnostic indication for a HER2 directed therapy and antibody drug conjugate in the region,” said Ken Keller, Global Head of Oncology Business, and President and CEO, Daiichi Sankyo, Inc. “Enhertu is now approved for six indications in the EU, which demonstrates our commitment to advancing innovative medicines in areas of high unmet need to patients with cancer.” “Precision medicine is reshaping cancer care by helping inform treatment decisions based on the molecular and biological characteristics of a patient’s disease,” said Dave Fredrickson, Executive Vice President, Oncology Hematology Business Unit, AstraZeneca. “Enhertu is already approved in breast, gastric and lung cancers, and with this approval, clinicians may now consider Enhertu for patients with HER2 positive status across multiple additional tumor types. This highlights the importance of biomarker testing to identify eligible patients and ensure that those with HER2 positive disease are considered for targeted treatment.” Enhertu (5.4 mg/kg) is approved in more than 40 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic HER2 positive (IHC 3+) solid tumors who have received prior systemic treatment and/or have no satisfactory alternative treatment options based on efficacy results from the DESTINY-PanTumor02, DESTINY-Lung01, DESTINY-CRC02 and/or HERALD trials. Additional regulatory submissions for Enhertu also are underway in the EU, including in combination with pertuzumab for the first-line treatment of adult patients with unresectable or metastatic HER2 positive breast cancer based on data from the DESTINY-Breast09 trial and for patients with HER2 positive breast cancer with residual invasive disease after neoadjuvant HER2 targeted treatment based on data from the DESTINY-Breast05 trial. Financial Considerations Following this approval in the EU, an amount of $25 million is due from AstraZeneca to Daiichi Sankyo as a milestone payment for the HER2 positive metastatic solid tumor indication. Sales of Enhertu in most EU territories are recognized by Daiichi Sankyo. For further details on the financial arrangements, please consult the collaboration agreement from March 2019 . About DESTINY-PanTumor02 DESTINY-PanTumor02 is a global, multicenter, multi-cohort, open-label, phase 2 trial evaluating the efficacy and safety of Enhertu (5.4 mg/kg) for the treatment of previously treated HER2 expressing tumors, including biliary tract, bladder, cervical, endometrial, ovarian, pancreatic cancer or other tumors. The primary endpoint of DESTINY-PanTumor02 is confirmed ORR as assessed by investigator. Secondary endpoints include DOR, disease control rate (DCR), progression-free survival (PFS), overall survival (OS), safety, tolerability and pharmacokinetics. Results from DESTINY-PanTumor02 were published in the Journal of Clinical Oncology . DESTINY-PanTumor02 enrolled 267 patients, including 111 HER2 positive (IHC 3+) adult patients at multiple sites in Asia, Europe, North America, South America and Oceania. For more information about the trial, visit ClinicalTrials.gov . About DESTINY-Lung01 DESTINY-Lung01 is a global, open-label, two-cohort, phase 2 trial evaluating the efficacy and safety of Enhertu (5.4 mg/kg or 6.4 mg/kg) in patients with HER2 mutant (Cohort 2, n=91) or HER2 overexpressing (defined as IHC 3+ or IHC 2+) (Cohort 1 and 1a, n=90) unresectable or metastatic NSCLC who had progressed after one or more systemic therapies. The primary endpoint of DESTINY-Lung01 is confirmed ORR by independent central review. Key secondary endpoints include DOR, DCR, PFS, OS and safety. Results from the HER2 mutant cohort were published in The New England Journal of Medicine and results from the HER2 overexpressing cohort were published in The Lancet Oncology . DESTINY-Lung01 enrolled 181 patients, including 17 HER2 positive (IHC 3+) adult patients at multiple sites in Asia, Europe and North America. For more information about the trial, visit ClinicalTrials.gov . About DESTINY-CRC02 DESTINY-CRC02 is a global, randomized, two arm, parallel, multicenter, phase 2 trial evaluating the efficacy and safety of two doses (5.4 mg/kg or 6.4 mg/kg) of Enhertu in patients with locally advanced, unresectable or metastatic HER2 positive colorectal cancer of BRAF wild-type, RAS wild-type or RAS mutant tumor types previously treated with standard therapy. The trial was conducted in two stages. In the first stage, patients (n=80) were randomized 1:1 to receive either 5.4 mg/kg or 6.4 mg/kg of Enhertu. In the second stage, additional patients (n=42) were enrolled in the 5.4 mg/kg arm. The primary endpoint in DESTINY-CRC02 is confirmed ORR as assessed by blinded independent central review. Secondary endpoints include DOR, DCR, investigator-assessed confirmed ORR, clinical benefit ratio, PFS, OS and safety. Results from DESTINY-CRC02 were published in The Lancet Oncology. DESTINY-CRC02 enrolled 122 patients, including 64 HER2 positive (IHC 3+) adult patients at multiple sites in Asia, Europe, North America and Oceania. For more information about the trial, visit ClinicalTrials.gov . About HER2 Expression in Solid Tumors HER2 is a tyrosine kinase receptor growth-promoting protein expressed on the surface of various tissue cells throughout the body and is involved in normal cell growth. 1 HER2 protein overexpression may occur as a result of HER2 gene amplification and is often associated with aggressive disease and poor prognosis in some cancers. 2 HER2 overexpression occurs in a range of solid tumors with the prevalence varying by tumor type. 3 HER2 directed therapies have been used to treat HER2 overexpression in breast, gastric and biliary tract cancers in the EU. 1,4,5,6 Although HER2 is overexpressed in additional solid tumor types including biliary tract, lung, bladder, cervical, colorectal, endometrial, ovarian, salivary gland and pancreatic cancers, HER2 testing is not routinely performed in these additional tumor types and prior to this approval there were no HER2 directed treatments approved in the EU to treat a broad range of solid tumors. 2,7,8 About Enhertu Enhertu (trastuzumab deruxtecan; fam-trastuzumab deruxtecan-nxki in the U.S. only) is a HER2 directed ADC. Designed using Daiichi Sankyo’s proprietary DXd ADC Technology, Enhertu is the lead ADC in the oncology portfolio of Daiichi Sankyo and the most advanced program in AstraZeneca’s ADC scientific platform. Enhertu consists of a HER2 monoclonal antibody attached to a number of topoisomerase I inhibitor payloads (an exatecan derivative, DXd) via tetrapeptide-based cleavable linkers. Enhertu (5.4 mg/kg) is approved in the U.S. for the adjuvant treatment of adult patients with HER2 positive breast cancer who have residual invasive disease following neoadjuvant trastuzumab (with or without pertuzumab) and taxane-based treatment based on the DESTINY-Breast05 trial. Enhertu (5.4 mg/kg) followed by THP is approved in China and the U.S. as a neoadjuvant treatment for adult patients with HER2 positive (IHC 3+ or ISH+) stage 2 or stage 3 breast cancer based on the results from the DESTINY-Breast11 trial. Continued approval in China for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial. Enhertu (5.4 mg/kg) in combination with pertuzumab is approved in Brazil, India, Israel, Saudi Arabia, Switzerland, the United Arab Emirates and the U.S. as a first-line treatment for adult patients with unresectable or metastatic HER2 positive (IHC 3+ or ISH+) breast cancer, as determined by a locally or regionally approved test, based on the results from the DESTINY-Breast09 trial. Enhertu (5.4 mg/kg) is approved in more than 95 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic HER2 positive (IHC 3+ or ISH+) breast cancer who have received a prior anti-HER2-based regimen, either in the metastatic setting or in the neoadjuvant or adjuvant setting, and have developed disease recurrence during or within six months of completing therapy based on the results from the DESTINY-Breast03 trial. Enhertu (5.4 mg/kg) is approved in more than 95 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic HER2 low (IHC 1+ or IHC 2+/ISH-) breast cancer who have received a prior systemic therapy in the metastatic setting or developed disease recurrence during or within six months of completing adjuvant chemotherapy based on the results from the DESTINY-Breast04 trial. Enhertu (5.4 mg/kg) is approved in more than 70 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic hormone receptor (HR) positive, HER2 low (IHC 1+ or IHC 2+/ ISH-) or HER2 ultralow (IHC 0 with membrane staining) breast cancer, as determined by a locally or regionally approved test, that have progressed on one or more endocrine therapies in the metastatic setting based on the results from the DESTINY-Breast06 trial. Enhertu (5.4 mg/kg) is approved in more than 75 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic NSCLC whose tumors have activating HER2 ( ERBB2 ) mutations, as detected by a locally or regionally approved test, and who have received a prior systemic therapy based on the results from the DESTINY-Lung02 and/or DESTINY-Lung05 trials. Continued approval in China and the U.S. for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial. Enhertu (6.4 mg/kg) is approved in more than 90 countries/regions worldwide for the treatment of adult patients with locally advanced or metastatic HER2 positive (IHC 3+ or IHC 2+/ISH+) gastric or gastroesophageal junction (GEJ) adenocarcinoma who have received a prior trastuzumab-based regimen based on the results from the DESTINY-Gastric01 , DESTINY-Gastric02 and/or DESTINY-Gastric04 trials. Enhertu (5.4 mg/kg) is approved in more than 40 countries/regions worldwide for the treatment of adult patients with unresectable or metastatic HER2 positive (IHC 3+) solid tumors who have received prior systemic treatment and/or have no satisfactory alternative treatment options based on efficacy results from the DESTINY-PanTumor02 , DESTINY-Lung01 , DESTINY-CRC02 and/or HERALD trials. Continued approval in the U.S. for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial. About the Enhertu Clinical Development Program A comprehensive global clinical development program is underway evaluating the efficacy and safety of Enhertu as a monotherapy or in combination or sequentially with other cancer medicines across multiple HER2 targetable cancers. About the Daiichi Sankyo and AstraZeneca Collaboration Daiichi Sankyo and AstraZeneca entered into a global collaboration to jointly develop and commercialize Enhertu in March 2019 and Datroway ® in July 2020 , except in Japan where Daiichi Sankyo maintains exclusive rights for each ADC. Daiichi Sankyo is responsible for the manufacturing and supply of Enhertu and Datroway. About the ADC Portfolio of Daiichi Sankyo The Daiichi Sankyo ADC portfolio consists of eight ADCs in clinical development crafted from ADC technology discovered in-house by Daiichi Sankyo. The DXd ADC Technology platform of Daiichi Sankyo consists of seven ADCs in clinical development where each ADC is comprised of a monoclonal antibody attached to a number of topoisomerase I inhibitor payloads (an exatecan derivative, DXd) via tetrapeptide-based cleavable linkers. The DXd ADCs include Enhertu and Datroway, which are being jointly developed and commercialized globally with AstraZeneca, and ifinatamab deruxtecan (I-DXd), raludotatug deruxtecan (R-DXd) and patritumab deruxtecan (HER3-DXd), which are being jointly developed and commercialized globally with Merck & Co., Inc, Rahway, NJ, USA. DS-3939 and DS3790 are being developed by Daiichi Sankyo. An additional ADC being developed by Daiichi Sankyo is DS3610, which consists of an antibody attached to a novel payload that acts as an agonist of STING. Ifinatamab deruxtecan, raludotatug deruxtecan, patritumab deruxtecan, DS-3939, DS3610 and DS3790 are investigational medicines that have not been approved for any indication in any country. Safety and efficacy have not been established. About Daiichi Sankyo Daiichi Sankyo (TSE: 4568) is a global healthcare company committed to becoming a trusted healthcare innovator, transforming the lives of people through its strength in science and technology. The company discovers and develops new standards of care to address diverse medical needs to fulfill its purpose of contributing to the enrichment of quality of life around the world. With a strategic focus on oncology, Daiichi Sankyo is advancing an industry-leading antibody drug conjugate portfolio along with identifying new breakthrough generating technologies to deliver practice-changing medicines to patients, healthcare professionals and society. For more information, please visit . ________________________________ REFERENCES: 1 Iqbal N, et al. Mol Biol Int. 2014;852748. 2 Cheng X. Genes (Basel ). 2024;15(7):903. 3 Yan M, et al. Cancer Metastasis Reviews. 2015;34(1):157-164. 4 Benli Y, et al. Clin Transl Oncol . 2025;27(9):3607-3624. 5 Uy NF, et al. Cancers (Basel) . 2022;14(17):4155. 6 Haigh JE, et al. Curr Oncol . 2024;31(9):5652-5661. 7 Omar N, et al. Pathogenesis . 2015;2(3):1-9. 8 Ismail A, et al. Oncologist . 2025;30(9):258. Contacts MEDIA CONTACTS: Global: Jennifer Brennan jennifer.brennan@daiichisankyo.com +1 908 900 3183 (mobile) EU: Simone Jendsch-Dowé simone.jendsch-dowe@daiichisankyo.com +49 (89) 78080 (office) Japan: DS-PR_jp@daiichisankyo.com INVESTOR RELATIONS CONTACT: DaiichiSankyoIR_jp@daiichisankyo.com