SHR-1918

近期，恒瑞 SHR-1918 首次启动了一项多中心、随机、双盲、安慰剂对照的 III 期临床研究，旨在评估 SHR-1918 对纯合家族性高胆固醇血症（HoFH）患者的低密度脂蛋白胆固醇（LDL-C）的降低作用。 截图来源：Insight 数据库 SHR-1918 是恒瑞医药自主研发的血管生成素样蛋白 3（ANGPTL3）单克隆抗体，通过抑制 ANGPTL3 的活性，从而降低血清中的甘油三酯（TG）和 LDL-C 水平。 2024 欧洲心血管学会（ESC）年会上，恒瑞以口头汇报的形式，公布了 SHR-1918 的 I 期临床研究的积极结果（SHR-1918-101）。研究结果表明，SHR-1918 单次皮下注射在健康受试者中显示出良好的耐受性和药代动力学特性，且在给药后显示出良好的剂量-暴露-效应关系： 在疗效方面，与安慰剂相比，SHR-1918 在降低血清 LDL-C 和 TG 水平方面表现出显著效果，并具有剂量依赖性。300 mg 及以上剂量水平的 LDL-C 降低超过 30%，持续 64 天以上，最高达 49.1%；TG 降低超过 50%，持续 85 天以上，最高达 82.8%； 在药代动力学方面，SHR-1918 皮下注射给药后，随着剂量的增加，血清中的药物浓度相应上升，具有缓慢吸收和消除的特性，药物达峰时间（Tmax）在 8.0 至 10.0 天内，药物半衰期时间（t1/2）在 29.4 至 53.5 天； 在安全性方面，SHR-1918 在 100 至 1200 mg 剂量范围内表现出良好的耐受性，未出现严重不良事件或导致治疗中断的不良事件。 截图来源：Insight 数据库 Insight 数据库显示，目前全球 ANGPTL3 单抗只有 4 款在研，其中再生元的依维苏单抗在 2021 年获 FDA 批准上市，用于 HoFH，这也是 FDA 批准的首个结合并阻断 ANGPTL3  功能的疗法，但此药并未在中国上市。 除此之外，其他 3 款均处于临床阶段，恒瑞 SHR-1918 是目前国内首个且唯一一个进入 III 期临床的ANGPTL3 靶向药物。 截图来源：Insight 数据库 封面来源：企业 Logo 免责声明：本文仅作信息分享，不代表 Insight 立场和观点，也不作治疗方案推荐和介绍。如有需求，请咨询和联系正规医疗机构。 编辑：木木 PR 稿对接：微信 insightxb 投稿：微信 insightxb；邮箱 insight@dxy.cn 多样化功能、可溯源数据…… Insight 数据库网页版等你体验 点击阅读原文，立刻解锁！

According to information from the U.S. clinical trial registry Clinicaltrials on December 10, Chinese company Heng Rui Pharma has launched its first Phase III clinical trial (SHR-1918-301) for the ANGPTL3 monoclonal antibody SHR-1918. This drug marks the first domestic ANGPTL3 monoclonal antibody to enter the Phase III clinical trial stage. SHR-1918 is an ANGPTL3 monoclonal antibody developed by Heng Rui Pharma, which works by inhibiting ANGPTL3 activity to lower triglycerides (TG) and low-density lipoprotein cholesterol (LDL-C) levels in serum. LDL-C and TG are significant risk factors for the development of atherosclerotic cardiovascular diseases. ANGPTL3 plays a key role in lipid metabolism regulation by inhibiting lipoprotein lipase and endothelial lipase, thereby reducing the clearance of TG and LDL-C. In September this year, Heng Rui Pharma announced the results of its first Phase I study (SHR-1918-101) at the European Society of Cardiology (ESC) annual meeting. The study showed that SHR-1918 (100-1200mg, subcutaneously) demonstrated good tolerance and pharmacokinetic characteristics in healthy subjects, with a peak time of 8.0-10.0 days and a half-life of 29.4-53.5 days. Additionally, SHR-1918 effectively and durably reduced LDL-C and TG levels: patients receiving doses of SHR-1918 of 300mg or higher had LDL-C levels reduced by over 30% (up to 49.1%), lasting more than 64 days; TG levels were reduced by over 50% (up to 82.8%), lasting more than 85 days. Given the potential of SHR-1918 for treating rare dyslipidemia disorders, the drug received breakthrough therapy designation for homozygous familial hypercholesterolemia (HoFH) from the Chinese National Medical Products Administration (NMPA) in September. The launched Phase III study is a multicenter, randomized, double-blind, placebo-controlled clinical trial (n=45), aimed at evaluating the efficacy and safety of SHR-1918 in treating homozygous familial hypercholesterolemia (HoFH). The primary endpoint is the percentage change in LDL-C levels from baseline at week 12. Homozygous familial hypercholesterolemia (HoFH) is a rare and severe genetic disorder where patients accumulate LDL-C in the blood due to defects or deficiencies in low-density lipoprotein receptors (LDLR), increasing the risk of heart disease and stroke. Currently, available treatment options for these patients include statins (simvastatin, atorvastatin, and rosuvastatin), ezetimibe, lomitapide, mipomersen, PCSK9 monoclonal antibodies (evolocumab and alirocumab), and evinacumab. Among these, evinacumab (Regeneron/Ultragenyx) is the only marketed ANGPTL3 monoclonal antibody, with global sales of $80.9 million in 2023.