CRISPR-Cas9 Gene Editing with Nexiguran Ziclumeran for ATTR Cardiomyopathy

作者：Marianna Fontana, Scott D. Solomon, Jessica Kachadourian, Liron Walsh, Ricardo Rocha, David Lebwohl, Derek K. Smith, Jörg Täubel, Edward Gane, Björn Pilebro, David J. Adams, Yousuf Razvi, Joy Olbertz, Alexandra Haagensen, Peijuan Zhu, Yuanxin Xu, Adia Leung, Alison Sonderfan, David E. Gutstein, Julian D. Gillmore · 发表于：New England Journal of Medicine · 年份：2024 · DOI：10.1056/nejmoa2412309 · 被引用次数：122 · 研究领域：Cardiomyopathy and Myosin Studies、Cardiovascular Effects of Exercise、CRISPR and Genetic Engineering

BACKGROUND: ). METHODS: In this phase 1, open-label trial, we administered a single intravenous infusion of nex-z to patients with ATTR-CM. Primary objectives included assessment of the effect of nex-z on safety and pharmacodynamics, including the serum TTR level. Secondary end points included changes in N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels, high-sensitivity cardiac troponin T levels, the 6-minute walk distance, and the New York Heart Association (NYHA) class. RESULTS: A total of 36 patients received nex-z and completed at least 12 months of follow-up. Of these patients, 50% were in NYHA class III and 31% had variant ATTR-CM. The mean percent change from baseline in the serum TTR level was -89% (95% confidence interval [CI], -92 to -87) at 28 days and -90% (95% CI, -93 to -87) at 12 months. Adverse events were reported in 34 patients. Five had transient infusion-related reactions, and two had transient liver-enzyme elevations that were assessed as treatment-related. Serious adverse events, most of which were consistent with ATTR-CM, were reported in 14 patients. The geometric mean factor change from baseline to month 12 was 1.02 (95% CI, 0.88 to 1.17) in the NT-proBNP level and 0.95 (95% CI, 0.89 to 1.01) in the high-sensitivity cardiac troponin T level. The median change from baseline to month 12 in the 6-minute walk distance was 5 m (interquartile range, -33 to 49). A total of 92% of the patients had either improvement or no change in their NYHA clas...