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

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Genes frequently associated with sudden death in primary hypertrophic cardiomyopathy

Diana L Herrera-Rodríguez1, Armando Totomoch-Serra2,3, Sandra Rosas-Madrigal4

  • 1Servicios de Salud de Chihuahua, Secretaría de Salud, Chihuahua, México.

Archivos De Cardiologia De Mexico
|January 31, 2020
PubMed

Insights

Hypertrophic cardiomyopathy (HCM) is a genetic heart disease causing thickened ventricles. Mutations in sarcomere genes, particularly MYBPC3 and MYH7, are strongly linked to sudden cardiac death in affected individuals.

Area of Science:

  • Cardiology
  • Genetics
  • Molecular Biology

Background:

  • Hypertrophic cardiomyopathy (HCM) is defined by left ventricular hypertrophy without other cardiac or systemic causes.
  • Sudden cardiac death can be the initial clinical presentation of HCM.
  • While prevalent in adulthood, HCM also affects children and adolescents, often with a strong genetic basis.

Purpose of the Study:

  • To elucidate the Mendelian inheritance patterns of hypertrophic cardiomyopathy.
  • To identify key genes associated with sudden cardiac death in HCM.
  • To discuss the role of sarcomeric proteins in the pathogenesis of HCM.

Main Methods:

  • Review of genetic databases and literature on inherited cardiomyopathies.
  • Analysis of gene mutations associated with autosomal dominant inheritance.
  • Focus on sarcomere protein-encoding genes, particularly those in the thick filament.

Main Results:

  • Primary (familial) HCM follows an autosomal dominant inheritance pattern.
  • Mutations in sarcomere proteins are implicated, with thick filament proteins frequently affected.
  • The MYBPC3 and MYH7 genes are most strongly associated with sudden cardiac death in HCM patients.

Conclusions:

  • Understanding the Mendelian inheritance of HCM is crucial for genetic counseling and risk stratification.
  • Mutations in MYBPC3 and MYH7 significantly increase the risk of sudden cardiac death in hypertrophic cardiomyopathy.
  • Targeting sarcomere gene mutations offers potential for improved diagnostics and therapeutics in HCM.

Keywords:
Gene variantsGenesHypertrophic cardiomyopathyMYBPC3MYH7Miocardiopatía hipertróficaMuerte súbitaSudden cardiac deathVariantes genéticas

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