IgA Nephropathy - Genetics

Genetics

Though various associations have been described, no consistent pattern pointing to a single susceptible gene has been yet identified. Associations described include those with C4 null allele, factor B Bf alleles, MHC antigens and IgA isotypes. ACE gene polymorphism (D allele) is associated with progression of renal failure, similar to its association with other causes of chronic renal failure. However, more than 90% of cases of IgA nephropathy are sporadic, with a few large pedigrees described from Kentucky and Italy (Online 'Mendelian Inheritance in Man' (OMIM) 161950).

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