Porustobart

CAMBRIDGE, Mass., ROTTERDAM, Netherlands and SUZHOU, China, Oct. 9, 2024 /PRNewswire/ -- Harbour BioMed (the "Company"; HKEX: 02142), a global biopharmaceutical company committed to the discovery, development, and commercialization of novel antibody therapeutics focusing on oncology and immunology, today announced the online publication of the results from its phase I clinical trial of porustobart (HBM4003), the Company's first-in-class fully human heavy chain antibody targeting CTLA-4. The trial evaluated porustobart in combination with the anti-PD-1 antibody toripalimab for the treatment of advanced solid tumors, with a particular focus on melanoma. These results were published in the Journal for ImmunoTherapy of Cancer (IF=10.3, 2023). This multicenter, open-label phase I trial was led by Dr. Jun Guo, Chief Physician of the Department of Melanoma and Soft Tissue Sarcoma at Beijing Cancer Hospital. The data demonstrated that the combination of porustobart and toripalimab had a manageable safety profile with no new safety signals in the treatment of solid tumors. Initial results also indicated promising antitumor activity, particularly in PD-1 treatment-naïve mucosal melanoma. Dual immunotherapy combining anti-CTLA-4 and anti-PD-1 antibodies is currently approved as a frontline treatment for several solid tumors, including melanoma, renal cell carcinoma, and non-small cell lung cancer. However, the high toxicity associated with anti-CTLA-4 antibodies has limited their broader use. Porustobart, a next-generation fully human anti-CTLA-4 antibody developed using the HCAb Harbour Mice® platform, is the first of its kind to enter clinical development globally. Its unique properties offer the potential to overcome the efficacy and toxicity challenges of conventional anti-CTLA-4 therapies, making it a promising candidate in the field of cancer immunotherapy. The phase I trial was conducted in two stages: a dose-escalation phase (Part 1) and a dose-expansion phase (Part 2). A total of 40 patients received treatment aimed at evaluating the safety, pharmacokinetics, immunogenicity, and preliminary efficacy of the combination therapy for the treatment of solid tumors, with a particular focus on melanoma. Safety Results Among the 40 patients who received study treatment, 10 (25.0%) patients reported grade ≥3 treatment-related adverse events (TRAEs). The commonly reported TRAEs were rash (30.0%), abnormal liver function (30.0%), leukopenia (25.0%), and fever (20.0%). Additionally, 5 (12.5%) patients experienced immune-related adverse events (irAEs) with maximum severity of Grade 3. No Grade 4 or 5 irAEs occurred. Efficacy Results Efficacy was evaluated in 32 melanoma patients treated with the recommended phase II dose (RP2D) of porustobart 0.3 mg/kg combined with toripalimab 240 mg every three weeks (Q3W), and who had available post-baseline imaging data. The objective response rate (ORR) was 33.3% in the anti-PD-1/PD-L1 treatment-naïve subgroup. For patients with mucosal melanoma, the ORR in this anti-PD-1/PD-L1 treatment-naïve subgroup was 40.0%. A high baseline Treg/CD4+ ratio in the tumor was identified as an independent predictive factor for immunotherapy efficacy. In summary, the combination of porustobart 0.3 mg/kg with toripalimab 240 mg Q3W demonstrated promising antitumor activity and manageable safety in patients with advanced melanoma, including the difficult-to-treat mucosal subtypes. Further studies are needed to confirm these findings, particularly in patients with mucosal melanoma. "We are encouraged by the positive results from our phase I study of porustobart in combination with an anti-PD-1 antibody, which has shown a favorable safety profile and early signs of clinical activity," said Dr. Jingsong Wang, Founder, Chairman and CEO of Harbour BioMed. "Porustobart is the first internally developed molecule generated from our HCAb Harbour Mice® platform. We look forward to moving forward with further studies to fully explore the potential of this combination in addressing unmet medical needs and ultimately making a meaningful difference in patients' lives." About Porustobart Porustobart (HBM4003) is a fully human anti-CTLA-4 monoclonal heavy chain only antibody (HCAb) generated from Harbour Mice®. It is the first fully human heavy-chain-only monoclonal antibody entered into clinical stage globally. By enhancing antibody-dependent cell cytotoxicity (ADCC) killing activity, porustobart has demonstrated significantly improved depletion specific to high CTLA-4 expressing Treg cells in tumor tissues. The potent anti-tumor efficacy and differentiated pharmacokinetics with durable pharmacodynamic effect present a favorable product profile. This novel and differentiated mechanism of action has the potential to improve efficacy while significantly reducing the toxicity of the drug in monotherapy and combination therapy. About Harbour BioMed Harbour BioMed (HKEX: 02142) is a global biopharmaceutical company committed to the discovery, development, and commercialization of novel antibody therapeutics focusing on immunology and oncology. The Company is building its robust portfolio and differentiated pipeline through internal R&D capability, collaborations with co-discovery and co-development partners, and select acquisitions. The proprietary antibody technology platforms Harbour Mice® generates fully human monoclonal antibodies in two heavy and two light chains (H2L2) format, as well as heavy chain only (HCAb) format. Building upon the HCAb antibodies, the HCAb-based immune cell engagers (HBICE®) bispecific antibody technology is capable of delivering tumor-killing effects unachievable by traditional combination therapies. Integrating Harbour Mice®, and HBICE® with a single B cell cloning platform, our antibody discovery engine is highly unique and efficient for the development of next-generation therapeutic antibodies. For further information, please refer to . SOURCE Harbour BioMed WANT YOUR COMPANY'S NEWS FEATURED ON PRNEWSWIRE.COM? 440k+ Newsrooms & Influencers 9k+ Digital Media Outlets 270k+ Journalists Opted In GET STARTED

近日，多家药企陆续公布了2024年上半年财务业绩。和铂医药上半年收入下跌，持续优化分子资产，研发投入大幅缩减。 收入下降42.2%至1.68亿元，大幅缩减研发开支 2024年9月18日，和铂医药（2142.HK）公布2024年中期业绩。公司2024上半年（2024H1）整体收入约1.68亿元人民币（约2370万美元），同比下降42.2%（GBI计算，下同）；盈利约992万元人民币（约140万美元），同比缩减52.1%。 和铂医药正在优化投资于临床项目以及处于发现和临床前阶段的分子资产，报告期内研发投入9297 万元人民币（约1310万美元），同比减少53.9%。期末现金储备相较于去年同期更充盈，约合13亿元人民币（约1.83亿美元）。 和铂医药专注于肿瘤免疫、炎症及免疫学疾病的潜在候选药物开发，已建设差异化的产品管线，核心产品包括FcRn单抗HBM9161（巴托利单抗）、CTLA-4单抗HBM4003（普鲁苏拜单抗）、TSLP单抗HBM9378和B7H7/HHLA2单抗HBM1020。其中，巴托利单抗于2021年获中国国家药品监督管理局（NMPA）突破性治疗认证，其治疗全身型重症肌无力（gMG）的生物制品许可申请（BLA）已于2024年7月获NMPA受理。普鲁苏拜单抗已于2024年1月启动联合PD-1抑制剂治疗晚期结直肠癌的临床试验。HBM9378和HBM1020也均已进入临床开发阶段。 全球医疗情报领导者 解锁隐藏在数据中的商业潜力  关于 G B I ” 自从2002年成立以来，GBI始终以技术为驱动，为药企、器械及行业相关服务商提供贯穿生命周期的全球药品市场竞争数据、全球行业资讯、HCPs洞察、全国医疗器械数据等商业信息与洞察，助力企业在进行战略布局和决策时，脱颖而出。历经20余年的深耕细作GBI已成为95%以上跨国药企、国内头部药企、咨询与投资机构等医疗圈灯塔用户值得信赖的长期合作伙伴。 联系我们 投稿 | 发稿 | 媒体合作 ▶ zhangxinyue13@baidu.com 数据库 | 咨询服务 | 资讯追踪 ▶ 点击左下“阅读原文”完成表单填写 点击阅读原文，解锁完整双语新闻