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Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
03:45

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

Published on: August 8, 2022

[Inherited metabolic cardiomyopathies]

Dominique P Germain1, Ales Linhart, Michel Desnos

  • 1Centre de référence de la maladie de Fabry et des maladies héréditaires du tissu conjonctif (syndromes d'Ehlers-Danlos et pseudoxanthome elastique), Assistance Publique-Hôpitaux de Paris, Paris (75), France. dominique.germain@egp.aphp.fr

Presse Medicale (Paris, France : 1983)
|June 5, 2007
PubMed

Insights

Genetic storage diseases like PRKAG2 deficiency, Danon disease, and Pompe disease cause hypertrophic cardiomyopathy when sarcomeric gene mutations are undetected. These conditions share a short PR interval and require specific management strategies.

Area of Science:

  • Cardiology
  • Genetics
  • Metabolic Diseases

Background:

  • Hypertrophic cardiomyopathy (HCM) affects 1/500 individuals.
  • Genetic mutations in sarcomeric proteins explain only two-thirds of HCM cases.
  • A subset of unexplained HCM is linked to genetic storage diseases.

Purpose of the Study:

  • To investigate genetic storage diseases as a cause of HCM.
  • To highlight common clinical features and genetic underpinnings of these conditions.

Main Methods:

  • Review of genetic analyses for HCM.
  • Identification of storage diseases (PRKAG2 deficiency, Danon disease, Pompe disease, Fabry disease) associated with cardiomyopathy.
  • Analysis of clinical presentations and genetic mutations.

Main Results:

  • PRKAG2 deficiency, an autosomal dominant disorder, causes storage cardiomyopathy with risks of sudden death.
  • Danon disease, an X-linked dominant disorder, presents with cardiomyopathy, myopathy, and intellectual disability.
  • Pompe disease, particularly infantile form, shows cardiac improvement with enzyme replacement therapy.

Conclusions:

  • Genetic storage diseases are crucial differential diagnoses for HCM.
  • Common features include short PR interval, necessitating targeted genetic testing.
  • Specific therapies are available for some of these conditions, impacting patient outcomes.

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