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Updated: Aug 15, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
[Hypertrophic cardiomyopathy]
Thomas Scheffold1, Priska Binner, Jeanette Erdmann
1Institut für Herz-Kreislaufforschung an der Universität, Witten/Herdecke. scheffold@herz-kreislaufforschung.de
Insights
Hypertrophic cardiomyopathy (HCM) is a common genetic heart disease often inherited. Early risk stratification for sudden death (SD) and further prospective studies are crucial for improved patient management and outcomes.
Area of Science:
- Cardiology
- Genetics
- Myocardial Diseases
Context:
- Hypertrophic cardiomyopathy (HCM) is a prevalent genetic heart disease affecting 0.2% of the population.
- It is characterized by heterogeneous genetic causes, clinical manifestations, and disease progression.
- Familial autosomal dominant inheritance is observed in approximately 60% of cases, often linked to mutations in specific genes.
Purpose:
- To review the current understanding of hypertrophic cardiomyopathy (HCM), including its genetic basis, diagnosis, and management.
- To highlight the heterogeneity of the disease and the need for improved risk stratification, particularly for sudden death (SD).
- To identify gaps in current research and emphasize the necessity for large-scale prospective studies.
Summary:
- HCM diagnosis relies heavily on echocardiography, with emerging roles for MRI and molecular genetic testing.
- Prognosis is variable, influenced by hypertrophy extent and genetic mutations; SD is a significant risk in younger individuals.
- Therapeutic strategies include medication (calcium antagonists, beta-blockers), interventional procedures (TASH/PTSMA, myectomy), and in end-stage cases, heart transplantation.
Impact:
- Improved understanding of HCM's genetic underpinnings and heterogeneous nature.
- Highlights the critical need for systematic risk stratification to prevent sudden death (SD) in HCM patients.
- Underscores the demand for more prospective studies and registries to refine diagnostic and therapeutic guidelines for HCM.
Abstract:
Hypertrophic cardiomyopathy (HCM) counts as one of primary diseases emanating from the myocardium. In approximately 60% of the cases a familial autosomal dominant trait of disease inheritance was determined. In the majority of the cases a mutation in one of the known 14 disease-causing genes could be proven. With a prevalence of 0.2% HCM is one of the most common genetic heart diseases. The genetic causes, the clinical manifestations as well as the clinical progression are heterogeneous. At present, echocardiography is the most important diagnostic tool. It remains to be seen how the results from magnetic resonance imaging and molecular genetic diagnosis will have impact on the disease management in the future. The prognosis varies according to the localization, the degree of hypertrophy and, in some cases, on the underlying genetic mutation. Sudden death (SD) is a significant risk of the disease in young people. A systematic stratification of patients at a higher risk of SD is desperately needed. The implantation of an AICD is the most effective preventive measure against SD. The basis medication therapy of symptomatic patients uses calcium antagonists or beta-blockers. In high-degree heart failure the typical therapy is applied mainly in combination with beta-blockers and, if indicated, also with antiarrhythmics. When a high degree of outflow obstruction is present, transcoronary ablation of septum hypertrophy (TASH; synonym: percutaneous transluminal septal myocardial ablation [PTSMA]) or myectomy Ercan be performed. Heart transplantion is performed only in very few patients with terminal heart failure. Even though HCM is one of the best-documented genetically based heart diseases, only a few prospective studies and registries have been established, which have produced guidelines and recommendations for diagnostics and therapy. The ACC/ESC Expert Consensus Document is very helpful in this respect. Therefore, there is still a great need for systematic prospective analyses in large patient populations.
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