title: [Families with 2 oligophrenic siblings].
abstract: Under observation there were 27 families with two mentally deranged sibs in each born by intellectually normal parents. In 2 of 24 families, the clinical picture of the derangement in the sibs was different, and in the rest of 22 identical. In 3 families, a sex-linked recessive oligophrenia with a nonspecific clinical picture was diagnosed. Prevalent were clinically non-differentiated forms of the oligophrenia. In 2 families, the oligophrenia was combined with clinical signs of hereditary defects of metabolism. Parents' consanguinity was registered in 4 families.
mesh_terms: D000015:Abnormalities, Multiple / Q000150:complications; D001927:Brain Diseases / Q000150:complications; D002547:Cerebral Palsy / Q000150:complications; D003241:Consanguinity; D005260:Female; D005808:Genes, Recessive; D006801:Humans; D008607:Intellectual Disability / Q000150:complications / Q000235:genetics*; D008297:Male; D014960:X Chromosome
vernacular_title: Sem'i s dvumia bol'nymi oligofrenieĭ sibsami.