摘要：2025年3月19日，复宏汉霖（2696.HK）宣布，公司创新型抗HER2单抗HLX22获得美国食品药品监督管理局（FDA）授予的孤儿药资格认定（Orphan Drug Designation, ODD），用于胃癌的治疗。
2025年3月19日，复宏汉霖（2696.HK）宣布，公司创新型抗HER2单抗HLX22获得美国食品药品监督管理局（FDA）授予的孤儿药资格认定（Orphan Drug Designation, ODD），用于胃癌的治疗。
获得FDA 孤儿药资格认定的药物将享有包括临床试验费用的税收抵免、免除新药申请费、获批后七年的市场独占权等一系列政策支持，以加速其开发进程，早日惠及患者。HLX22此次获得孤儿药资格认定，是基于其在胃癌治疗领域展现出的巨大潜力。这是HLX22全球多地相继启动国际多中心III期临床试验后，取得的又一重要里程碑，标志着其在全球范围内的开发进程迈出关键一步。
据GLOBOCAN数据显示，2022年全球约有100万胃癌新发病例，逾66万死亡病例，疾病负担呈现显著地域不平衡[1]，构成了一大健康问题。多数胃癌患者早期症状隐匿，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]。尽管近年来靶向治疗（如抗HER2药物）和免疫检查点抑制剂（如抗PD-1/PD-L1单抗）在胃癌的治疗中取得了显著进展[4]，但鉴于该疾病具有高度分子异质性，不同亚型患者对化疗、靶向治疗和免疫治疗的反应差异显著[5]，胃癌的整体治疗仍存在巨大的未满足的临床需求。HLX22是一款靶向HER2的创新型单克隆抗体。与传统的HER2靶向疗法相比，HLX22具有差异化的分子设计和作用机制，可结合在HER2的胞外亚结构域IV，但结合表位与曲妥珠单抗有所不同，使得该产品能够与和曲妥珠单抗同时结合至HER2，促进HER2二聚体（HER2同源二聚体及HER2/EGFR异源二聚体）的内吞和降解，进而产生更强的HER2受体阻断效果。此前，HLX22联合曲妥珠单抗的HER2双靶疗法已在HER2阳性胃癌的治疗中展现出优异的疗效，一项HLX22联合汉曲优（曲妥珠单抗，美国商品名：HERCESSI，欧洲商品名：Zercepac）治疗HER2阳性胃癌的II期临床研究（HLX22-GC-201）结果显示，在汉曲优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[6-8]，有望重塑晚期胃癌的一线标准治疗。引领HER2双靶向疗法，HLX22联合曲妥珠单抗及化疗一线治疗HER2阳性晚期胃癌的国际多中心III期临床研究（HLX22-GC-301）已分别获得中国、美国、日本和澳大利亚等地药监机构的新药临床试验（IND）许可，并完成全球首例患者给药。未来，复宏汉霖将继续秉持“以患者为中心”的理念，加速推进HLX22的全球研发布局，早日将这一创新疗法带给全球患者。同时，公司也将持续深耕肿瘤领域，推动更多创新药物的研发，带来更多高质量、可负担的治疗选择。
【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] Miao, ZF.,et al. Progress and remaining challenges in comprehensive gastric cancer treatment. Holist Integ Oncol 1, 4 (2022).
[5] Guan, WL.,et al. Gastric cancer treatment: recent progress and future perspectives. J Hematol Oncol 16, 57 (2023).
[6] 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
[7] J. Li et al., 422P HLX22 plus HLX02 and XELOX as first-line therapy for HER2-positive advanced gastric/gastroesophageal junction cancer: Updated results from a randomized, double-blind phase II study, Annals of Oncology,Annals of Oncology (2024) 35 (suppl_1): S162-S204. 10.1016/annonc/annonc1482
[8] Li N, et al. A randomized phase 2 study of HLX22 plus trastuzumab biosimilar HLX02 and XELOX as first-line therapy for HER2-positive advanced gastric cancer. Med. 2024;5(10):1255-1265.e2.
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，已有6款产品在中国获批上市，4款产品在国际获批上市，4个上市申请分别获中国药监局、美国FDA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。截至目前，公司已获批上市产品包括国内首个生物类似药汉利康（利妥昔单抗）、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）、汉贝泰（贝伐珠单抗）、全球首个获批一线治疗小细胞肺癌的抗PD-1单抗汉斯状（斯鲁利单抗，欧盟商品名：Hetronifly）以及汉奈佳（奈拉替尼）。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 Receives Orphan Drug Designation for Innovative Anti-HER2 mAb HLX22 in the U.S. for Gastric Cancer
Shanghai, China, March 19, 2025 - Shanghai Henlius Biotech, Inc. (2696.HK) announced that the U.S. Food and Drug Administration (FDA) has granted Orphan Drug Designation (ODD) for HLX22, the company's innovative anti-HER2 monoclonal antibody (mAb) for the treatment of gastric cancer.
According to the U.S. FDA, the drug or biological product receives an ODD will be eligible for certain development incentives, including but not limited to: 1) tax credits for clinical trial costs; 2) waiver of application fees for new drugs; and 3) seven years of market exclusivity without being affected by patent, aiming to accelerate the development process so that patients can benefit from the products as soon as possible. Receiving an Orphan Drug Designation for HLX22 recognizes its potential to treat patients with gastric cancer and marks another milestone for HLX22, following the initiation of its multicenter phase 3 clinical trials in multiple countries and regions worldwide, and signifies a crucial step forward in its global presence.
Until now, gastric cancer still constitutes a major global health problem. According to GLOBOCAN 2022, there were around 1 million new cases and over 660 thousand new deaths of gastric cancer in 2022 globally[1]. Gastric cancer is often diagnosed at an advanced stage, with a poor prognosis and a 5-year relative survival rate of only 6%[2,3]. Despite significant advancements in targeted therapies, such as anti-HER2 agents, and immune checkpoint inhibitors (anti-PD-1/PD-L1 mAbs) for gastric cancer treatment in recent years[4], the disease's high molecular heterogeneity leads to markedly varied responses to chemotherapy, targeted therapy, and immunotherapy across different subtypes[5]. This underscores the urgent unmet clinical needs in the overall management of gastric cancer.HLX22, an innovative anti-HER2 mAb, can bind to HER2 extracellular subdomain IV at a binding site different from that of trastuzumab via differentiated molecular design and mechanism of action, which allows simultaneous binding of HLX22 and trastuzumab to HER2 dimers (HER2 homodimer and HER2/EGFR heterodimer) on tumour cell surface, thereby promoting the internalization and HER2 dimer degradation. The phase 2 clinical data on the combination of HLX22 and HANQUYOU (trastuzumab, trade name: HERCESSI in the U.S., Zercepac in Europe) demonstrate that the addition of HLX22 to trastuzumab plus chemotherapy significantly improves survival and anti-tumour efficacy in first-line treatment of HER2-positive gastric/gastroesophageal junction cancer (GC/GEJC) patients, with manageable safety profiles[6-8]，expected to redefine the first-line standard treatment for advanced gastric cancer. At present, the Investigational New Drug (IND) applications for HLX22-GC-301, a phase 3 clinical study aims to evaluate the efficacy and safety of HLX22 in combination with trastuzumab and chemotherapy for the first-line treatment of patients with HER2-positive metastatic GC/GEJC have been approved in China, the U.S, Japan and Australia, etc. This international study has been initiated in multiple countries and regions worldwide and has completed its first patient dosing globally.Looking forward, Henlius will adhere to patient-centricity, accelerating the multi-regional clinical trials of HLX22 to deliver this innovative therapy to patients worldwide. Meanwhile, the company will continue to delve into the oncology field, driving the development of more innovative therapeautics to provide high-quality and affordable treatment options.
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, 6 products have been launched in China, 4 have been approved for marketing in overseas markets, and 4 marketing applications have been accepted for review in China, the U.S. 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 the backbone. To date, the company's launched products include HANLIKANG (rituximab), the first China-developed biosimilar, HANQUYOU (trastuzumab, trade name: HERCESSI in the U.S., Zercepac in Europe), a China-developed mAb biosimilar approved in China, Europe and U.S., HANDAYUAN (adalimumab), HANBEITAI (bevacizumab), HANSIZHUANG (serplulimab, trade name: Hetronifly in the EU), the world’s first anti-PD-1 mAb for the first-line treatment of SCLC, and HANNAIJIA (neratinib). What’s more, Henlius has conducted over 30 clinical studies for 16 products, expanding its presence in major markets as well as emerging markets.
来源：动态宝