title: Family-based association study between G72/G30 genetic polymorphism and schizophrenia.
abstract: Genetic variations in G72/G30 have been reported to be associated with schizophrenia and bipolar disorders in several case-control studies. This gene is located in a genomic region known to contain susceptibility genes for schizophrenia. As case-control studies carry an increased risk of confounding through population stratification, we investigate whether the rs947267 (A/C) polymorphism is associated with schizophrenia in a family-based association study. This polymorphism is located within the G72/G30 gene and has been previously associated with bipolar disorders. The sample consisted of a total of 216 Chinese families that included an affected offspring and parents. Transmission disequilibrium analysis revealed a significant association between the G72/G30 rs947267 polymorphism and schizophrenia (P=0.016), with the A allele more commonly transmitted to patients. Further analysis stratified by sex showed that the A allele was significantly more overtransmitted than nontransmitted in the trios of male probands (P=0.031), but not in the trios of female probands. Our family-based association study supports the suggestion that the G72/G30 gene may be implicated in susceptibility to schizophrenia and there may be an interaction between this gene and sex in the pathogenesis of schizophrenia.
authors.affiliation: Department of Psychiatry, Taipei Veterans General Hospital, Taiwan.
authors.forename: Chen-Jee
authors.initials: CJ
authors.lastname: Hong
authors.forename: Sheue-Jane
authors.initials: SJ
authors.lastname: Hou
authors.forename: Feng-Chang
authors.initials: FC
authors.lastname: Yen
authors.forename: Ying-Jay
authors.initials: YJ
authors.lastname: Liou
authors.forename: Shih-Jen
authors.initials: SJ
authors.lastname: Tsai
mesh_terms: D000328:Adult; D002352:Carrier Proteins / Q000235:genetics*; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D004252:DNA Mutational Analysis / Q000379:methods; D005192:Family Health; D005260:Female; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins; D015810:Linkage Disequilibrium / Q000502:physiology; D008297:Male; D016017:Odds Ratio; D011110:Polymorphism, Genetic; D011506:Proteins / Q000235:genetics*; D012333:RNA, Messenger; D012559:Schizophrenia / Q000235:genetics*; D012737:Sex Factors
chemical_list: D002352:Carrier Proteins; C475071:DAOA protein, human; C488199:DAOAAS gene product, human; D047908:Intracellular Signaling Peptides and Proteins; D011506:Proteins; D012333:RNA, Messenger