Progressive familial heart block. Part I. Extent of the disease.
Progressive familial heart block (type I) has been identified in the RSA. Since 1977 many families have been referred for pedigree tracing. The present probands of some 9 pedigrees are the descendants of specific children of an immigrant; other genetic diseases appear in these pedigrees. The necessity of identifying, diagnosing and possibly treating the descendants of carriers is emphasized.
D006327:Heart Block / Q000235:genetics*; D006801:Humans; D010375:Pedigree; D013019:South Africa