title: A monozygotic twin pair with Rett syndrome.
abstract: A five-year-old, monozygotic, Turkish female twin pair with Rett syndrome is described. The twins are almost completely concordant in all clinical signs. This observation suggests a genetic cause of Rett syndrome.
mesh_terms: D002675:Child, Preschool; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D013577:Syndrome; D014427:Twins; D014430:Twins, Monozygotic