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Related Experiment Videos

Mutations in the LMNA gene encoding lamin A/C.

J Genschel1, H H Schmidt

  • 1Medizinische Klinik mit Schwerpunkt für Gastroenterologie, Hepatologie und Endokrinologie, Campus Charité Mitte, Berlin, Germany.

Human Mutation
|January 11, 2000
PubMed
Summary

Mutations in the LMNA gene cause various diseases, including muscular dystrophy and cardiomyopathy. This study summarizes known LMNA mutations and their associated phenotypes, offering insights into lamin A/C protein function.

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Area of Science:

  • Genetics and Molecular Biology
  • Cardiology
  • Neurology

Background:

  • Mutations in the LMNA gene are recently linked to several human diseases.
  • The LMNA gene encodes A-type lamins (lamin A/C), crucial nucleophilic proteins involved in cellular structure and function.
  • Lamin A/C is the first identified nucleophilic protein implicated in human disease beyond emerin.

Purpose of the Study:

  • To consolidate and review all documented mutations within the LMNA gene.
  • To correlate specific LMNA mutations with their resulting clinical phenotypes.
  • To enhance understanding of lamin A/C protein function through disease association.

Main Methods:

  • Literature review of published studies on LMNA gene mutations.
  • Compilation of a comprehensive list of identified LMNA mutations.

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  • Categorization of mutations based on associated disease phenotypes.

    • Main Results:

    • A total of 41 distinct LMNA gene mutations have been identified.
    • These mutations are predominantly missense mutations, leading to diverse clinical presentations.
    • Specific mutation counts are associated with Emery-Dreifuss muscular dystrophy (23), limb-girdle muscular dystrophy (3), dilated cardiomyopathy (8), and familial partial lipodystrophy (7).

    Conclusions:

    • LMNA gene mutations are responsible for a spectrum of inherited disorders.
    • Understanding these genotype-phenotype correlations is vital for diagnosing and potentially treating laminopathies.
    • Further research into lamin A/C function is warranted based on these disease associations.