title: Heterozygous expression in 3-M slender-boned nanism.
abstract: A 15-year-old girl affected by autosomal recessive 3-M slender boned nanism (3-MSBN) was studied. The clinically normal parents, two other obligate and two probable heterozygotes for the 3-MSBN gene from an unrelated family were radiologically investigated. All except one probably heterozygote showed mild features of the 3-MSBN, mainly bone slenderness and prominent talus. These findings are interpreted as demonstrative of the heterozygotic expression of the 3-MSBN gene.
mesh_terms: D000293:Adolescent; D004392:Dwarfism / Q000000981:diagnostic imaging / Q000235:genetics*; D005260:Female; D006580:Genetic Carrier Screening; D006801:Humans; D011859:Radiography