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Cardiomyopathy III: Hypertrophic Cardiomyopathy

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...

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Related Experiment Video

Updated: Jul 6, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model

Published on: August 8, 2022

A DNA resequencing array for pathogenic mutation detection in hypertrophic cardiomyopathy.

Siv Fokstuen¹, Robert Lyle, Analia Munoz

¹Genetic Medicine, University Hospitals of Geneva, Geneva, Switzerland. siv.fokstuen@medecine.unige.ch

|April 15, 2008

Summary

Hypertrophic cardiomyopathy (HCM) is a genetic heart condition. A new DNA resequencing array efficiently detects mutations in HCM-linked genes, aiding diagnosis and patient stratification.

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Last Updated: Jul 6, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model

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Published on: August 8, 2022

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Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation

Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation

Published on: January 16, 2019

Area of Science:

Genetics
Cardiology
Molecular Biology

Background:

Hypertrophic cardiomyopathy (HCM) is an autosomal dominant cardiac disorder affecting 1 in 500 individuals.
Over 450 mutations in at least 16 genes are linked to HCM, necessitating efficient genetic testing.
The genetic heterogeneity of HCM poses challenges for clinical molecular screening.

Purpose of the Study:

To develop a high-throughput, rapid, and cost-effective DNA resequencing array for detecting mutations in HCM-associated genes.
To assess the utility of this custom array in a cohort of patients with hypertrophic cardiomyopathy.
To evaluate the potential of the array for diagnostic, predictive, and prognostic applications in HCM.

Main Methods:

A custom DNA resequencing array was designed to cover coding exons, splice junctions, and 5'UTR regions of 12 key HCM genes.
The array was used to analyze DNA from 38 unrelated HCM patients (17 familial, 21 sporadic).
Sequencing data across 953,306 bp were analyzed for pathogenic mutations.

Main Results:

Pathogenic mutations (known and novel) in MYH7, MYBPC3, TNNI3, and MYL3 were identified in 60% of familial HCM cases and 10% of sporadic cases.
The resequencing array demonstrated a high mean nucleotide call rate of 96.92%.
The array successfully identified mutations in key genes implicated in hypertrophic cardiomyopathy.

Conclusions:

The developed high-throughput HCM resequencing array is a rapid and cost-effective tool for molecular testing.
This technology has significant potential for improving diagnostic accuracy, predictive testing, and prognostic stratification in HCM patients.
The array facilitates the integration of molecular screening into clinical practice for hypertrophic cardiomyopathy.