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[Cardiac manifestations of laminopathies]

S Brette1, I Penisson-Besnier, J M Dupuis

  • 1Service de cardiologie U350, centre hospitalier universitaire, Angers.

Archives Des Maladies Du Coeur Et Des Vaisseaux
|July 13, 2005
PubMed

Insights

Genetic dilated cardiomyopathy (DCM) linked to lamin A/C gene mutations carries a high risk of sudden death. Early investigation for laminopathies is crucial in young individuals with DCM, even without a family history.

Area of Science:

  • Cardiovascular Genetics
  • Molecular Cardiology
  • Genetic Basis of Cardiomyopathy

Background:

  • Dilated cardiomyopathy (DCM) is a significant cause of heart failure.
  • Genetic factors account for approximately 25% of primary DCM cases.
  • Mutations in the lamin A/C gene (LMNA) are associated with a severe form of DCM.

Observation:

  • LMNA gene mutations lead to a poor prognosis and increased risk of sudden cardiac death.
  • The study presents five cases of DCM caused by laminopathies.
  • These cases include individuals with and without associated skeletal muscle disease.

Findings:

  • Laminopathies, specifically LMNA gene mutations, are a critical cause of genetic DCM.
  • Conduction defects and arrhythmias in young DCM patients warrant LMNA mutation screening.
  • A negative family history does not exclude the possibility of LMNA-related DCM.

Implications:

  • Early identification of LMNA mutations can guide clinical management and risk stratification.
  • Genetic testing for LMNA mutations should be considered in young DCM patients presenting with conduction abnormalities.
  • Understanding the genetic basis of DCM improves diagnostic accuracy and therapeutic strategies.

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