title: Klinefelter's syndrome (karyotype 47,XXY) and schizophrenia-spectrum pathology.
abstract: Klinefelter's syndrome, characterised by a 47,XXY chromosomal pattern, has largely been associated with physical abnormalities. Here, we report high levels of schizophrenia-spectrum pathology in 32 men with this syndrome in comparison with 26 healthy controls. This may have implications for treatment of have implications for treatment of Klinefelter's syndrome and suggests that the X chromosome may be involved in the aetiology of schizophrenia.
authors.affiliation: Experimental Experimental Psychology, Helmholtz Instituut, Universiteit Utrecht, PO Box 80125, 3508 TC Utrecht, The Netherlands. s.vanrijn@fss.uu.nl
authors.forename: Sophie
authors.initials: S
authors.lastname: van Rijn
authors.forename: André
authors.initials: A
authors.lastname: Aleman
authors.forename: Hanna
authors.initials: H
authors.lastname: Swaab
authors.forename: René
authors.initials: R
authors.lastname: Kahn
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D006801:Humans; D007713:Klinefelter Syndrome / Q000523:psychology*; D008297:Male; D012559:Schizophrenia / Q000209:etiology*