中国南通,2026年1月13日——专注于下一代RNA疗法创新的中美瑞康今日宣布,其自主研发的靶向SOD1突变型肌萎缩侧索硬化症(ALS,俗称“渐冻症”)的创新siRNA疗法RAG-17,已于浙江大学医学院附属第二医院完成II期临床试验首例患者给药。本次试验由该院医学遗传科/罕见病诊治中心主任吴志英教授领衔开展。
此项多中心II期临床试验是一项多次给药、剂量递增(MAD)的随机、双盲、安慰剂对照研究,旨在评估携带SOD1基因突变的ALS受试者接受鞘内注射RAG-17重复给药的安全性/耐受性、PK、PD和初步疗效。参与试验的机构包括首都医科大学附属北京天坛医院(王伊龙教授团队)、浙江大学医学院附属第二医院(吴志英教授团队)、四川大学华西医院(商慧芳教授团队)、福建医科大学附属协和医院(邹漳钰教授团队)和中山大学附属第一医院(曾进胜教授团队)。
这一里程碑标志着该项研究正式进入II期阶段。此次启动II期MAD阶段是基于已顺利完成的I期单次剂量递增(SAD)研究的积极结果。SAD研究数据显示出RAG-17单次给药后卓越的安全性和持久的生物标志物调节作用,包括脑脊液(CSF)SOD1蛋白的显著降低以及血浆神经丝轻链(NfL)水平的改善。这些结果有力地验证了我们专有的SCAD™递送平台在人体中实现中枢神经系统(CNS)靶向递送的能力。
中美瑞康创始人兼首席执行官李龙承博士表示:“本次II期临床首例患者的成功给药,是我们推进渐冻症突破性疗法进程中的关键里程碑。I期试验的积极数据已印证了RAG-17的治疗潜力,我们有信心这一疗法能为SOD1突变型渐冻症患者的生命质量带来实质性改善。”
研究者吴志英教授对II期试验寄予厚望:“我们很荣幸能参与这项重要的研究。基于我们在临床中观察到的改善,随着研究推进,我们期待进一步探索RAG-17提升ALS患者生活质量的潜力。”
关于RAG-17
RAG-17是中美瑞康自主研发的一款创新siRNA药物,依托公司专有的SCAD™(智能化学辅助递送)递送平台技术开发。该药物旨在特异性、高效地靶向并沉默SOD1基因的mRNA表达,用于治疗携带SOD1基因突变的ALS。SOD1基因突变导致的毒性功能获得是家族性ALS的一个重要致病因素。通过高效抑制SOD1基因表达、减少毒性SOD1蛋白的产生,RAG-17旨在保护神经元功能,从而延缓或阻止SOD1-ALS的疾病进展。
此前RAG-17已获美国食品药品监督管理局(FDA)孤儿药资格(ODD),同时被纳入国家药品监督管理局药品审评中心(NMPA CDE)《以患者为中心的罕见病药物研发试点工作计划(“关爱计划”)》试点项目。
关于ALS
ALS是一种进行性神经退行性疾病,影响大脑和脊髓中的神经细胞,导致肌肉无力、瘫痪,最终在诊断后的3到5年内导致死亡。SOD1基因突变约占家族性ALS病例的10-20%,散发性ALS病例的1-2%。目前,临床上仍然迫切需要能够有效减缓或阻止ALS疾病进展的治疗手段,以改善患者的生活质量并延长生存期。
关于中美瑞康
中美瑞康是一家临床阶段的生物制药公司,致力于开发突破性小核酸药物与疾病治疗方法。中美瑞康是全球少数同时掌握有肝内与肝外递送的小核酸药企之一,开发出了具有独立自主知识产权的SCAD™、LiCO™及GLORY™等多个具有国际领先水平的小核酸药物递送平台技术。基于RNA激活技术和自主开发的Smart-TTC saRNA药物开发平台,公司建立了具有高度差异化的小核酸药物管线,适应症涵盖神经退行性疾病、神经肌肉疾病、肿瘤、代谢与血液系统疾病等,为诸多疾病领域中无法成药的靶点、无法治愈的疾病提供创新型治疗方案。详情请访问官网www.ractigen.com。
Ractigen Therapeutics Announces First Patient Dosed in Phase II Clinical Trial of RAG-17 for SOD1-ALS
Nantong, China – January 13, 2026 – Ractigen Therapeutics is pleased to announce that the first patient has been dosed in the Phase II clinical trial of RAG-17, an innovative siRNA therapy targeting SOD1-mutated amyotrophic lateral sclerosis (ALS). The initial dosing occurred at Second Affiliated Hospital, Zhejiang University School of Medicine, under the leadership of Dr. Zhi-Ying Wu, head of the Department of Medical Genetics/Center for Rare Diseases.
This Phase II trial is a randomized, double-blind, placebo-controlled, multiple ascending dose (MAD) study designed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary efficacy of repeated intrathecal injections of RAG-17 in patients with SOD1 mutations. The participating sites include Beijing Tiantan Hospital, Capital Medical University (led by Dr. Yi-Long Wang), The Second Affiliated Hospital, Zhejiang University School of Medicine (led by Dr. Zhi-Ying Wu), West China Hospital of Sichuan University (led by Dr. Hui-Fang Shang), Fujian Medical University Union Hospital (led by Dr. Zhan-Yu Zou) and the First Affiliated Hospital, Sun Yat-sen University (led by Dr. Jing-Sheng Zeng) . 重试 错误原因
This milestone marks the progression into the Phase II stage of the study, building on the successful completion of the Phase I single ascending dose (SAD) portion. The transition to the Phase II MAD phase was supported by highly encouraging data from the SAD study, which demonstrated an exceptional safety profile and sustained biomarker modulation following a single injection, including significant reductions in CSF SOD1 protein and improvements in plasma neurofilament light chain (NfL) levels. These results validate the capability of our proprietary SCAD™ delivery platform for central nervous system (CNS) in humans.
Dr. Long-Cheng Li, Founder and CEO of Ractigen Therapeutics, emphasized Ractigen's dedication to advancing treatments for ALS: “The successful dosing of the first patient represents a significant milestone in our mission to develop transformative therapies for ALS. The positive results from the Phase I trial affirm the promise of RAG-17 and provide us with strong confidence in its potential to markedly improve the lives of patients suffering from SOD1-mutated ALS.”
Dr. Zhi-Ying Wu shared optimistic expectations for the Phase II trial: “We are excited to be part of this important study. Based on the improvements we have observed clinically, we look forward to further investigating RAG-17’s potential to enhance the quality of life for ALS patients as we progress.”
About RAG-17
RAG-17 is an investigational siRNA therapeutic candidate designed using Ractigen's proprietary SCAD™ delivery platform technology to specifically target and silence the superoxide dismutase 1 (SOD1) gene mRNA. Mutations in the SOD1 gene cause a toxic gain-of-function and are a known cause of familial ALS. By reducing the production of the toxic mutant SOD1 protein, RAG-17 aims to slow or halt the progression of SOD1-ALS.
RAG-17 has obtained Orphan Drug Designation (ODD) from the U.S. Food and Drug Administration (FDA) and been selected for the CARE Program of the Center for Drug Evaluation (CDE), National Medical Products Administration (NMPA), which facilitates the accelerated development of rare disease therapies.
About ALSAmyotrophic Lateral Sclerosis (ALS) is a progressive neurodegenerative disease affecting nerve cells in the brain and spinal cord, leading to muscle weakness, paralysis, and ultimately death, typically within three to five years of diagnosis. SOD1 gene mutations account for approximately 10-20% of familial ALS cases and about 1-2% of sporadic ALS cases. There remains a critical unmet medical need for effective treatments that can slow or stop disease progression.
About Ractigen TherapeuticsRactigen Therapeutics is a clinical-stage biopharmaceutical company innovating next-generation RNA therapeutics, with a primary focus on small activating RNAs (saRNAs) developed through its clinically validated RNA activation (RNAa) technology. Leveraging proprietary delivery platforms such as SCAD™, LiCO™, and GLORY™, Ractigen is advancing a robust pipeline addressing unmet medical needs in oncology, neurological diseases, and genetic disorders. Its versatile technologies also enable the rapid development of RNA-based solutions, including siRNAs, where applicable, to target life-threatening, fast-progressing conditions such as those in the CNS. Committed to scientific excellence and patient-centered innovation, Ractigen strives to transform healthcare through the power of RNA therapeutics. For more information, visit 重试 错误原因 www.ractigen.com.
(特别声明:以上文章内容来源于 中美瑞康 左下角阅读原文 , 版权归原作者所有。如有侵权 请联系删除,谢 谢!)
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