Rituximab-Pvvr

近日，复宏汉霖（2696.HK）宣布，公司基于与宜联生物的合作开发的靶向程序性死亡-配体1（PD-L1）的新型抗体偶联药物（ADC）注射用HLX43在复发/转移性食管鳞癌患者中开展的II期临床研究（HLX43-ESCC201）于中国完成首例受试者给药。目前，全球尚无同类靶向PD-L1的ADC产品获批上市，仅有SGE-PDL1V（来自辉瑞）即将启动临床III期试验，HLX43为全球第二款进入临床阶段的靶向PD-L1的ADC产品。 近年来，以抗PD-1/L1抗体为代表的免疫检查点抑制剂（ICI）促进了肿瘤免疫治疗的高速发展，成为肿瘤患者各线治疗的主要手段之一。然而，部分PD-L1阳性患者对该疗法无响应，或者出现耐药[1]。对于免疫治疗耐药或经免疫治疗等标准治疗失败后的患者人群，尚缺少有效的后线治疗方案，亟待探索更前沿的新型治疗方案，进一步提高患者的临床获益。ADC作为当下肿瘤治疗中疗效最突出的新型疗法，已在乳腺癌、肺癌、食管癌、胃癌等多项实体瘤中展现出初步的治疗潜力，成为重要的探索方向[2]。而PD-L1在非小细胞肺癌、结直肠癌、三阴性乳腺癌、鳞状细胞癌等多种癌种中均有表达，且在正常组织中的表达有限，使其成为开发ADC药物的潜力靶点，为肿瘤治疗带来新的途径[3]。 HLX43为复宏汉霖首批进入临床阶段的ADC产品之一，旨在解决PD-1/L1免疫疗法不响应或耐药问题，填补更多晚期/转移性实体瘤患者未满足的临床需求。HLX43兼具抗体分子的高度靶向性和细胞毒素的强大杀伤力，可通过与肿瘤细胞表面PD-L1 抗原特异性结合，经内吞后释放小分子毒素，从而发挥抗肿瘤作用。2023年，HLX43治疗晚期/转移性实体瘤的I期临床试验申请先后获中国国家药品监督管理局（NMPA）和美国食品药品管理局（ FDA）批准，并于2023年11月在中国境内完成首例患者给药。2024年12月，HLX43单药或联合治疗晚期/转移性实体瘤的Ib/II期临床试验申请获NMPA批准。临床前研究及I期临床研究提示，HLX43在PD-1/PD-L1单抗耐药的非小细胞肺癌、宫颈癌、食管鳞癌、肝癌等多个瘤种中显示出显著疗效，且耐受性良好，临床前研究数据于2023欧洲肿瘤内科学会（ESMO）大会以壁报形式进行展示。基于此，复宏汉霖计划于近期启动HLX43在包括食管鳞癌、宫颈癌、肝细胞癌、鼻咽癌、头颈部鳞癌、非小细胞肺癌等实体瘤中的II期临床试验，以进一步评HLX43的疗效和安全性。 未来，复宏汉霖将持续立足于未满足的临床需求，充分发挥公司在抗体药物和抗体偶联药物领域的一体化平台优势，加速推动更多前沿治疗方案的研究和开发，为全球患者带来更多高质量、可负担的创新治疗方案。 【参考文献】 [1] Attili I, et al. Strategies to overcome resistance to immune checkpoint blockade in lung cancer[J]. Lung cancer: Journal of the International Association for the Study of Lung Cancer, 2021(154-):154. [2] He J, Zeng X, Wang C, Wang E, Li Y. Antibody-drug conjugates in cancer therapy: mechanisms and clinical studies. MedComm (2020). 2024 Jul 28;5(8):e671. [3] Kwan B, et al. 783 SGN-PDL1V, a novel, investigational PD-L1-directed antibody-drug conjugate for the treatment of solid tumors[J]. 2021. 关于HLX43-ESCC201 本研究为评估不同剂量HLX43在经一线标准治疗失败或不可耐受毒性的复发/转移性食管鳞癌患者中的有效性和安全性的II期临床试验。筛选合格的受试者将接受每 3 周一次（Q3W）HLX43治疗。本研究主要目的是评估HLX43 在复发/转移性食管鳞癌中的临床疗效。次要目的是评估安全性和耐受性、药代动力学特征及免疫原性、和潜在预测性生物标志物。 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。 First Subject Dosed for a Phase 2 Clinical Trial of Henlius’ PD-L1-Targeting ADC HLX43 Recently, Shanghai Henlius Biotech, Inc. (2696.HK) announced that the first subject has been dosed for a phase 2 clinical trial of HLX43 for Injection (HLX43-ESCC201), the novel Programmed Death-Ligand 1 (PD-L1)-targeting antibody-drug conjugate (ADC) that developed by the company based on the collaboration with MediLink Therapeutics, for the treatment of patients with recurrent/metastatic esophageal squamous cell carcinoma (ESCC).  At present, no PD-L1 targeting ADC has been approved for marketing globally, and only SGN-PDL1V from Pfizer is about to innitiate a Phase 3 clinical trial. HLX43 is the second PD-L1-targeting ADC to enter clinical trial globally. Immune checkpoint inhibitors represented by PD-1/PD-L1 monoclonal antibodies have emerged in recent years and revolutionised all lines of treatment for tumour patients. However, there are still many patients with positive PD-L1 expression who do not respond to or develop resistance to PD-1/PD-L1-targeted therapy[1]. To date, there has been no subsequent-line treatment for patients who are resistant to PD-1/L1 immunotherapy or failed to benefit from the standard treatments including immunotherapy, indicating a significant unmet medical need to further improve the clinical benefits for these patients. As a novel targeting therapy with the most prominent anti-tumour efficacy, ADCs have shown preliminary therapeutic potential in the treatment of multiple advanced solid tumours, such as breast cancer(BC), lung cancer(LC), esophageal cancer(EC) and gastric cancer(GC) ,making it a promising therapeutic in solid tumours[2]. PD-L1 is expressed in patients across a broad spectrum of tumour types including non-small cell lung cancer (NSCLC), colorectal cancer (CRC), triple negative breast cancer (TNBC), squamous cell carcinoma and displays limited expression on normal tissues, highlighting the potential of PD-L1 as a target for ADCs, which may bring new options for cancer treatment[3]. HLX43 is one of the first ADC candidates of Henlius to enter into clinical development. Combining the selectivity of targeted monoclonal antibodies with the highly potent cytotoxic agent, HLX43 could exert anti-tumour effects through specific binding to the PD-L1 expressed on the surface of tumour cells and release cytotoxic payloads after internalisation by the cancer cells. In 2023, the application for phase 1 clinical trial of HLX43 for the treatment of advanced/metastatic solid tumours was approved by the China National Medical Products Administration (NMPA) and the U.S. Food and Drug Administration (FDA), respectively. And the first patient has been dosed in this trial in November 2023 in the Chinese Mainland. In December 2024, the application for a phase 1b/2 clinical trial of HLX43 for the monotherapy or combination therapy of advanced/metastatic solid tumours has been approved by the NMPA. Several non-clinical studies and the phase 1 clinical trial have shown that, HLX43 has good anti-tumour effects and a favorable tolerability profile in non-small cell lung cancer (NSCLC) , cervical cancer (CC), ESCC, hepatocellular carcinoma (HCC), and other tumour types that were PD-1/L1 mAb-resistant. The results of the pre-clinical studies  were published as poster presentation at the 2023 European Society of Medical Oncology (ESMO) Congress. Based on this, Henlius plans to initiate phase 2 clinical trials of HLX43 for potential solid tumour indications including ESCC, CC, HCC, nasopharyngeal carcinoma(NPC), head and neck squamous cell carcinoma (HNSCC) and non-small cell lung cancer (NSCLC)，to further evaluate the efficacy and safety of HLX43 in patients. With a particular focus on addressing the unmet medical needs, Henlius will further take efforts to accelerate the R&D of more cutting-edge therapeutic options and promote the layout of our innovative portfolio based on the company’s competitive edge of an integrated antibody drug R&D platform, bringing more high-quality and affordable therapeutics for patients worldwide. About HLX43-ESCC201 This study is a phase 2 clinical trial designed to evaluate the efficacy and safety of different doses of HLX43 in patients with recurrent/metastatic esophageal squamous cell carcinoma (ESCC) who have failed or are intolerant to first-line standard treatment. Eligible subjects will receive HLX43 every 3 weeks (Q3W). The primary objective of this study is to assess the clinical efficacy of HLX43 in recurrent/metastatic ESCC. Secondary objectives include evaluating safety and tolerability, pharmacokinetic characteristics and immunogenicity, and potential predictive biomarkers. 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. 联系方式 媒体：PR@Henlius.com 投资者：IR@Henlius.com 喜欢本文内容 点击下方按钮·分享 ·收藏 ·点赞 ·在看