title: Cystinuria and mental deficiency.
abstract: Several studies have shown that the incidence of cystinuria in mentally retarded populations is higher than it is in the general population. The present study found that a group of cystinurics did not differ significantly in their intelligence from their normal siblings or intelligence test norms. Since cystinuria is a heterogeneous disease, the findings of the present study could be reconciled with previous findings by supposing that only certain genotypes for cystinuria lead to mental retardation.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003555:Cystinuria / Q000150:complications* / Q000235:genetics; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000150:complications / Q000235:genetics*; D008297:Male; D008875:Middle Aged