Genetic aspects of lupus are reviewed, including recognition of genetic and clinical heterogeneity, genetic factors in the aetiology and heritability of disease, reproductive implications and genetic counselling of patients. Despite a large literature on the genetic epidemiology and immunogenetics of lupus, it remains difficult to apply the results of laboratory findings to the circumstances of individual patients. Generally, lupus is not transmitted as a simple Mendelian trait, and genetic counselling is based on the multifactorial model of disease aetiology with interaction of multiple genetic and environmental factors. Further studies are needed to clarify the heritability of lupus and improve the data for recurrence risk prediction in lupus families.
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