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Dominantly inherited dilated cardiomyopathy

R J Gardner, J W Hanson, V V Ionasescu

    American Journal of Medical Genetics
    |May 1, 1987
    PubMed

    Insights

    A dominant gene causes familial dilated cardiomyopathy, leading to heart pump failure and potential skeletal myopathy. Early detection methods like echocardiography and biopsies are crucial for affected families.

    Area of Science:

    • Cardiology
    • Genetics
    • Neurology

    Background:

    • Familial dilated cardiomyopathy (DCM) is a significant cause of heart failure.
    • Autosomal dominant inheritance patterns are observed in some DCM cases.
    • Understanding genetic heterogeneity in DCM is crucial for diagnosis and treatment.

    Observation:

    • A family presents with an autosomal dominant gene linked to cardiomyopathy.
    • Clinical onset typically occurs between the fourth and seventh decades.
    • Associated skeletal myopathy, ranging from mild weakness to biopsy-detectable changes, is noted.

    Findings:

    • The identified gene causes pump failure with heart dilatation (dilated cardiomyopathy).
    • Arrhythmias are a frequent co-occurring symptom.
    • The study highlights similarities and potential heterogeneity within familial dominant DCM.

    Implications:

    • Echocardiography and cardiac biopsy can aid in diagnosing dilated cardiomyopathy.
    • Skeletal muscle biopsy may reveal presymptomatic signs in heterozygotes.
    • Further research is needed to elucidate the genetic heterogeneity of familial DCM.

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