title: Association study between the TNXB locus and schizophrenia in a Japanese population.
abstract: The chromosome 6p21-24 region, which contains the human leukocyte antigen (HLA) region, has been suggested as an important locus for a susceptibility gene for schizophrenia. Recently, a significant association between schizophrenia and the TNXB locus, located immediately telomeric of the NOTCH4 locus in the HLA region, was observed. Few studies have further investigated the region in schizophrenia. In the present study, we investigated the region in a Japanese population. Subjects included 241 patients with schizophrenia and 290 controls. Twenty-six single nucleotide polymorphisms (SNPs) and the corresponding haplotypes were analyzed. As a result, exactly the same SNPs in the TNXB locus (rs1009382 and rs204887) as in the previous study were associated with schizophrenia (P = 0.034 and 0.034, respectively, uncorrected). A SNP (rs2071287) in the NOTCH4 locus and haplotype around it were also suggested to associate with the disease, consistent with another previous study (P = 0.041 and permutation P = 0.024, respectively, uncorrected). Although these associations became insignificant after Bonferroni correction, the findings might provide support for the association of the TNXB locus or its adjacent region of the NOTCH4 locus with schizophrenia.
authors.affiliation: Department of Neuropsychiatry, Graduate School of Medicine, University of Tokyo, Bunkyo, Tokyo, Japan.
authors.forename: Mamoru
authors.initials: M
authors.lastname: Tochigi
authors.forename: Xuan
authors.initials: X
authors.lastname: Zhang
authors.forename: Jun
authors.initials: J
authors.lastname: Ohashi
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Hibino
authors.forename: Takeshi
authors.initials: T
authors.lastname: Otowa
authors.forename: Mark
authors.initials: M
authors.lastname: Rogers
authors.forename: Tadafumi
authors.initials: T
authors.lastname: Kato
authors.forename: Yuji
authors.initials: Y
authors.lastname: Okazaki
authors.forename: Nobumasa
authors.initials: N
authors.lastname: Kato
authors.forename: Katsushi
authors.initials: K
authors.lastname: Tokunaga
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Sasaki
mesh_terms: D000328:Adult; D044466:Asian People / Q000235:genetics*; D016022:Case-Control Studies; D005260:Female; D005787:Gene Frequency; D008040:Genetic Linkage; D020022:Genetic Predisposition to Disease; D006239:Haplotypes; D006801:Humans; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D011518:Proto-Oncogene Proteins / Q000235:genetics; D000074562:Receptor, Notch4; D051880:Receptors, Notch / Q000235:genetics; D012559:Schizophrenia / Q000235:genetics*; D019063:Tenascin / Q000235:genetics*
chemical_list: C106075:NOTCH4 protein, human; D011518:Proto-Oncogene Proteins; D000074562:Receptor, Notch4; D051880:Receptors, Notch; D019063:Tenascin; C081865:tenascin X