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Clues from genetic and epidemiologic studies.

C L Christian

    Arthritis and Rheumatism
    |June 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Genetic factors significantly contribute to Systemic Lupus Erythematosus (SLE) pathogenesis. Familial aggregation and twin studies confirm a strong genetic influence, exceeding environmental factors in SLE development.

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    Area of Science:

    • Immunogenetics
    • Rheumatology
    • Systemic Lupus Erythematosus (SLE) research

    Background:

    • Systemic Lupus Erythematosus (SLE) exhibits familial aggregation.
    • Previous studies suggest genetic predisposition to SLE.

    Purpose of the Study:

    • To investigate the role of genetic variables in SLE pathogenesis.
    • To differentiate genetic from other familial factors in SLE aggregation.

    Main Methods:

    • Analysis of SLE frequency in first-degree relatives.
    • Comparison of concordance rates in monozygotic and dizygotic twins.
    • Evaluation of familial aggregation data.

    Main Results:

    • SLE occurs in 1-2% of first-degree relatives, significantly higher than the general population.

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  • Monzygotic twin concordance for SLE exceeds 50%.
  • Familial aggregation is primarily attributed to genetic factors.

    • Conclusions:

    • Genetic variables play a crucial role in SLE pathogenesis.
    • Familial aggregation of SLE is predominantly genetic.
    • Sex hormones and racial immune system activity may influence SLE incidence and presentation.