Updated thinking on HCM genetics

Since around 1990, HCM has been regarded as a disease caused entirely by single mutations in genes affecting a protein in the cardiac sarcomeres. There is no doubt that sarcomere mutations play an important role. But in the last several years, there has been a growing realization among researchers that this cannot be the entire explanation for the causes of HCM. This is because a majority of HCM patients do not appear to carry these mutations, and many people who do carry them never develop HCM. The development and inheritance of HCM are more complicated than was previously thought. However, for patients, many of the lessons previously taught about HCM genetics remain true. Current research may open the way to a much-improved understanding of HCM.

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Two new state-of-the-art reviews on HCM

An expert panel of HCM doctors published two state-of-the-art reviews in the Feb. 1, 2022 issue of Journal of the American College of Cardiology. The reviews are aimed at doctors who treat patients with HCM. But they include much information of interest to patients.

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