title: No association of GSK3beta gene (GSK3B) with Japanese schizophrenia.
abstract: Several lines of evidence indicate that glycogen synthase kinase-3beta (GSK3beta) is one of the candidates for schizophrenia-susceptibility factor. However, it has not been reported the association analysis between GSK3beta gene (GSK3B) and Japanese schizophrenia based on linkage disequilibrium (LD). We provide an association analysis using relatively large samples (381 schizophrenia, and 352 controls) after determination of "tag single nucleotide polymorphisms (SNPs)." In this LD mapping, we selected and genotyped for eight polymorphisms (seven SNPs and one diallelic (CAA)(n) repeat), which covered the entire region of GSK3B, and determined two "tag SNPs." In the following association analysis using these two "tag SNPs," we could not find association with Japanese schizophrenia. Furthermore, we also include subgroup analysis considering age-at-onset and subtypes, neither could we find associations. Because our samples provided quite high power, these results indicate that GSK3B may not play a major role in Japanese schizophrenia.
authors.affiliation: Department of Psychiatry, Fujita Health University School of Medicine, Toyoake, Aichi, Japan. ikeda-ma@fujita-hu.ac.jp
authors.forename: Masashi
authors.initials: M
authors.lastname: Ikeda
authors.forename: Nakao
authors.initials: N
authors.lastname: Iwata
authors.forename: Tatsuyo
authors.initials: T
authors.lastname: Suzuki
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Kitajima
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Yamanouchi
authors.forename: Yoko
authors.initials: Y
authors.lastname: Kinoshita
authors.forename: Norio
authors.initials: N
authors.lastname: Ozaki
mesh_terms: D017668:Age of Onset; D001483:Base Sequence; D005838:Genotype; D038362:Glycogen Synthase Kinase 3 / Q000235:genetics*; D000071679:Glycogen Synthase Kinase 3 beta; D006801:Humans; D007564:Japan; D015810:Linkage Disequilibrium; D020641:Polymorphism, Single Nucleotide; D012559:Schizophrenia / Q000201:enzymology / Q000235:genetics*
chemical_list: C000605506:GSK3B protein, human; D000071679:Glycogen Synthase Kinase 3 beta; D038362:Glycogen Synthase Kinase 3