复宏汉霖抗HER2单抗HLX22国际多中心III期的新药临床试验申请已获得美国FDA许可

发布时间:2024-05-06 内容来源于: 浏览量:

内容来源:复宏汉霖


2024年5月6日,复宏汉霖(2696.HK)宣布,公司创新型抗HER2单抗HLX22的国际多中心III期的新药临床试验(IND)申请已经获得美国食品药品监督管理局(FDA)许可,拟用于联合曲妥珠单抗及化疗一线治疗HER2阳性晚期胃癌。目前,全球尚无同类用于治疗HER2阳性胃癌的HER2双靶向疗法获批准上市。



迄今为止,胃癌/胃食管连接部(G/GEJ)依旧构成了一大全球健康问题。据GLOBOCAN数据显示,2022年全球约有100万新发病例[1]。多数G/GEJ癌患者确诊时已处于疾病晚期,总体预后不良,5年生存率仅为6%[2,3],这其中HER2 阳性患者占比约为12%-23%,且其预后较HER2阴性患者更差[2,4]。目前,对于HER2阳性的局部晚期/转移性G/GEJ患者,其标准一线疗法为曲妥珠单抗联用化疗,针对PD-L1 阳性(PD-L1 CPS≥1)的患者,一些指南亦推荐进一步叠加联用免疫治疗,但持续疗效和预后仍有待进一步改善[5]


HLX22为复宏汉霖自AbClon, Inc.许可引进、并后续自主研发的靶向HER2的创新型单克隆抗体。与曲妥珠单抗类似,HLX22可结合在HER2的亚结构域IV,但结合表位与曲妥珠单抗有所不同,使得HLX22和曲妥珠单抗能够同时与HER2结合,从而产生更强的HER2受体阻断效果。临床前研究表明,HLX22与曲妥珠单抗联合治疗可抑制表皮生长因子(EGF)和HRG1(Histidine-Rich Glycoprotein 1)诱导的细胞增殖,增强体外和体内的抗肿瘤活性。此前,HLX22针对HER2过表达的晚期实体瘤的I期临床研究数据显示,HLX22在HER2过表达的晚期实体瘤患者中具有良好的安全性和耐受性[6]。2024年1月,HLX22联合汉曲优®(曲妥珠单抗,欧洲商品名:Zercepac®)治疗HER2阳性胃癌II期临床研究数据首次发布于2024年美国临床肿瘤学会胃肠道肿瘤研讨会(ASCO GI),该研究结果显示,在HLX02(曲妥珠单抗)联用化疗的基础上加入HLX22可提高HER2阳性G/GEJ癌患者一线治疗的生存期和抗肿瘤反应,且安全性可控[7]


未来,公司也将继续秉持以患者为中心,聚焦未满足的临床需求,积极探索优化HER2阳性肿瘤联合疗法并推进HLX22的更多国际临床注册,为全球更多患者带去福音。

【参考文献】

[1] Bray F, Laversanne M, Sung H, et al. CA Cancer J Clin. 2024: 1-35.

[2] Ajani JA. et al. J Natl Compr Canc Netw 2022;20(2):167-92.

[3] Alsina M. et al. Nat Rev Gastroenterol Hepatol 2023;20(3):155-70.

[4] Gravalos C. et al. Ann Oncol 2008;19(9):1523-9.

[5] NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®) for Gastric Cancer V.1.2024

[6] Zhu X, Ding Y, Wang Q, Yang G, Zhou L, Wang Q. HLX22, an anti-HER-2 monoclonal antibody, in patients with advanced solid tumors overexpressing human epidermal growth factor receptor 2: an open-label, dose-escalation, phase 1 trial. Invest New Drugs. 2023;41(3):473-482. doi:10.1007/s10637-023-01338-7

[7] Jin Li et al., HLX22 plus HLX02 and XELOX for first-line treatment of HER2-positive locally advanced or metastatic gastric/gastroesophageal junction cancer: A randomized, double-blind, multicenter phase 2 study.. JCO 42, 354-354(2024).DOI:10.1200/JCO.2024.42.3_suppl.354

关于复宏汉霖

复宏汉霖(2696.HK)是一家国际化的创新生物制药公司,致力于为全球患者提供可负担的高品质生物药,产品覆盖肿瘤、自身免疫疾病、眼科疾病等领域,已在中国上市5款产品,在国际上市2款产品,19项适应症获批,6个上市申请分别获中国药监局和欧盟EMA受理。自2010年成立以来,复宏汉霖已建成一体化生物制药平台,高效及创新的自主核心能力贯穿研发、生产及商业运营全产业链。公司已建立完善高效的全球创新中心,按照国际药品生产质量管理规范(GMP)标准进行生产和质量管控,不断夯实一体化综合生产平台,其中,公司商业化生产基地已相继获得中国、欧盟和美国GMP认证。


复宏汉霖前瞻性布局了一个多元化、高质量的产品管线,涵盖50多个分子,并全面推进基于自有抗PD-1单抗H药汉斯状®的肿瘤免疫联合疗法。继国内首个生物类似药汉利康®(利妥昔单抗)、中国首个自主研发的中美欧三地获批单抗生物类似药汉曲优®(曲妥珠单抗,美国商品名:HERCESSI™,欧洲商品名:Zercepac®)、汉达远®(阿达木单抗)和汉贝泰®(贝伐珠单抗)相继获批上市,创新产品汉斯状®(斯鲁利单抗)已获批用于治疗微卫星高度不稳定(MSI-H)实体瘤、鳞状非小细胞肺癌、广泛期小细胞肺癌和食管鳞状细胞癌,并成为全球首个获批一线治疗小细胞肺癌的抗PD-1单抗。公司亦同步就16个产品在全球范围内开展30多项临床试验,对外授权全面覆盖欧美主流生物药市场和众多新兴市场。


Henlius Dual HER2 Blockade Therapy Receives Phase 3 MRCT IND Approval from U.S. FDA


Shanghai, China, May 6, 2024-Shanghai Henlius Biotech, Inc. (2696.HK) announced that the investigational new drug application (IND) for phase 3 international multicenter clinical study of Henlius’ novel anti-HER2 mAb, HLX22, in combination with trastuzumab and chemotherapy for the first-line treatment of HER2-positive advanced gastric cancer has been approved by the United States Food and Drug Administration (FDA). As of now, no similar dual HER2 blockade therapy for the treatment of HER2-positive gastric cancer has received approval for commercialization globally.


Until now, gastric/gastroesophageal junction (G/GEJ) cancer still constitutes a major global health problem. Globally, there were around 1 million cases in 2022 [1]. G/GEJ cancer generally carries a poor prognosis since it is often diagnosed at an advanced stage, with a 5-year relative survival rate of only 6% [2,3]. The reported rates of HER2 positivity in patients with gastric cancer range from 12% to 23%, and the prognosis for patients with HER2-positive disease used to be even worse than those with HER2-negative disease -2. Currently, for patients with HER2-positive locally advanced/metastatic G/GEJ cancer, the current standard first-line treatment is trastuzumab plus chemotherapy. Immunotherapies are recommended to be added for tumours with PD-L1 expression levels by CPS (Combined Positive Score) of greater than 1. However, the effectiveness and prognosis for these treatments need to be further improved [5].


HLX22 is an innovative anti-HER2 mAb that was introduced from AbClon, Inc. and further researched and developed by Henlius. HLX22 can bind to HER2 subdomain IV at a different binding site from trastuzumab, which allows the simultaneous binding of HLX22 and trastuzumab to HER2. Pre-clinical studies have showed that the combination therapy of HLX22 and trastuzumab inhibits the cell proliferation induced by epidermal growth factor (EGF) and Histidine-Rich Glycoprotein 1 (HRG1) and enhance the antitumor activity in vitro and in vivo. The phase 1 clinical trial of HLX22 demonstrates that HLX22 is well tolerated and has good safety profiles. In January 2024, results from the phase 2 study of HLX22 combined with HANQUYOU (trastuzumab for injection, HLX02, trade name in Europe: Zercepac®) and chemotherapy for the first-line treatment of HER2-positive G/GEJ cancer was first released at the 2024 ASCO Gastrointestinal Cancers Symposium (ASCO GI), which showed that adding HLX22 to HLX02 (trastuzumab for injection) + XELOX improved survival and antitumor response in patients with HER2-positive G/GEJ cancer in the first-line setting, with a manageable safety profile [7].


Moving forward, the company will continue to uphold a patient-centric approach, focus on unmet medical needs, and actively explore the optimization of combination therapies for HER2-positive cancer. This includes advancing clinical trials and registrations worldwide for HLX22 to bring hope to more patients around the world.

About Henlius

Henlius (2696.HK) is a global biopharmaceutical company with the vision to offer high-quality, affordable, and innovative biologic medicines for patients worldwide with a focus on oncology, autoimmune diseases, and ophthalmic diseases. Up to date, 5 products have been launched in China, 2 have been approved for marketing in overseas markets, 19 indications are approved worldwide, and 6 marketing applications have been accepted for review in China and the EU, respectively. Since its inception in 2010, Henlius has built an integrated biopharmaceutical platform with core capabilities of high-efficiency and innovation embedded throughout the whole product life cycle including R&D, manufacturing and commercialization. It has established global innovation centre and Shanghai-based commercial manufacturing facilities certificated by China, the EU and U.S. GMP.


Henlius has pro-actively built a diversified and high-quality product pipeline covering over 50 molecules and has continued to explore immuno-oncology combination therapies with proprietary HANSIZHUANG (anti-PD-1 mAb) as backbone. Apart from the launched products HANLIKANG (rituximab), the first China-developed biosimilar, HANQUYOU (trastuzumab for injection, trade name: HERCESSI™ in the U.S., Zercepac® in Europe), the first China-developed mAb biosimilar approved in China, Europe and U.S., HANDAYUAN (adalimumab) and HANBEITAI (bevacizumab), the innovative product HANSIZHUANG has been approved by the NMPA for the treatment of MSI-H solid tumours, squamous non-small cell lung cancer (sqNSCLC) and extensive-stage small cell lung cancer (ES-SCLC), and esophageal squamous cell carcinoma (ESCC), making it the world’s first anti-PD-1 mAb for the first-line treatment of SCLC. What’s more, Henlius has conducted over 30 clinical studies for 16 products, expanding its presence in major markets as well as emerging markets.    






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