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Rewriting the sarcomere: Gene therapy approaches for hypertrophic cardiomyopathy from bench to bedside
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DOI：10.1016/j.medj.2026.101230.png)
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Abstract
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Hypertrophic cardiomyopathy (HCM) is a prototypical inherited cardiomyopathy with well-defined sarcomeric genetic underpinnings that make it an attractive target for molecular therapy. We review recent advances in gene-based approaches for HCM, including adeno-associated virus-mediate gene replacement, allele-specific silencing, and emerging gene editing strategies, and highlight the first demonstrations of in vivo target engagement and early clinical translation. Early-phase studies suggest that restoration of sarcomeric biology can favorably impact molecular and structural disease features. We further discuss key challenges related to immune responses, delivery efficiency, response durability, and patient selection that will shape the next phase of development. Together, these developments establish HCM as one of the important early models for cardiac gene therapy and highlight both the promise and complexity of translating genetic insight into durable clinical benefit.
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