业绩总结 - LX2006是治疗Friedreich Ataxia（FA）心肌病的唯一临床项目，最新的中期临床数据显示所有参与者均表现出显著的心脏FXN表达[5] - LX2006的FDA加速审批路径已获得关键要素的对齐，基于左心室质量指数（LVMI）降低和蛋白质表达[5] - FDA设定的左心室质量指数(LVMI)减少阈值为10%，而参与者在12个月内的平均LVMI减少为25%[42] - 最新访视中，参与者的LVMI平均减少为27%，其中6名参与者中有5名达到FDA设定的>10% LVMI减少标准[48] - 参与者中，所有8名在治疗后3个月的Frataxin蛋白表达均有所增加，平均增加幅度为115%[45] 用户数据 - 在基线时，约40%的成人患有FA并且LVMI异常，当前有6名此类参与者正在进行的1/2期试验中[42] - 参与者2的LVMI减少幅度为25.7%，而参与者11的LVMI减少幅度为30.2%[48] - 参与者13的LVMI减少幅度高达60.9%，显示出显著的改善[48] - Cohort 1的参与者在LX2020治疗后，PKP2蛋白表达水平分别增加了71%和115%[89] - Cohort 1参与者1的PVC（室性早搏）数量减少了67%，从861次减少到284次[91][92] 未来展望 - 预计在即将进行的关键试验中，LX2006的剂量为1.2E12 vg/kg，基于当前的安全性数据[54] - 预计2025年中将对LX2006项目进行监管更新，并计划在2026年初启动注册研究[95] - LX2020项目将在2025年下半年更新Cohort 1和Cohort 2的进展[95] - 公司预计在2025年将进行多项关键里程碑的更新，支持其强劲的财务状况[95] 新产品和新技术研发 - LX2020针对PKP2-ACM的潜在最佳治疗，预计美国有约6万人没有可用的疾病修饰治疗[5] - AAVrh10载体在心脏的分布比AAV9高出约1.5倍至2倍，显示出更好的心脏靶向性[12] - 在PKP2-ACM模型中，AAVrh10显示出功能改善的趋势，左心室射血分数（EF）提高61%[14] - LX2020治疗的安全性良好，未出现与治疗相关的严重不良事件[89] 财务状况 - 截至2025年3月31日，公司现金及市场证券约为1.81亿美元，预计可支持至2028年[95] - LX2006在目前的试验中普遍耐受良好，未观察到临床显著的补体激活事件[53] - 预计将有至少12名成人参与者，统计功效为90%[54] 负面信息 - FA心肌病患者中，心脏功能障碍是60-80%的死亡原因，通常在30多岁时发生[21] - FA患者的左心室质量指数（LVMI）升高与死亡风险呈正相关，每增加10g/m²，死亡风险增加19%[32]

Table of Contents As filed with the Securities and Exchange Commission on April 9, 2024 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT Under The Securities Act of 1933 LEXEO THERAPEUTICS, INC. (Exact name of Registrant as specified in its charter) Delaware 2836 85-4012572 (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification Number) ...

Table of Contents As filed with the Securities and Exchange Commission on November 1, 2023 Registration No. 333-274777 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Lexeo Therapeutics, Inc. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Delaware 2836 85-4012572 (Primary Standard Industrial Classification Code Number) (I.R.S. Empl ...

Table of Contents As filed with the Securities and Exchange Commission on October 30, 2023 Registration No. 333-274777 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Lexeo Therapeutics, Inc. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Delaware 2836 85-4012572 (Primary Standard Industrial Classification Code Number) (I.R.S. Empl ...

Table of Contents As filed with the Securities and Exchange Commission on September 29, 2023 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Lexeo Therapeutics, Inc. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Delaware 2836 85-4012572 (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification No. ...