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• W2032267613 abstract "Background Straub et al. (2002b) located a susceptibility region for schizophrenia at the DTNBP1 locus. At least 40 studies (including one study in US populations) attempted to replicate this original finding, but the reported findings are highly diverse and at least five pathways by which dysbindin protein might be involved in schizophrenia have been proposed. This study aimed to test the association in two common US populations by using powerful analytic methods. Methods Six markers at DTNBP1 were genotyped by mass spectroscopy (‘MassARRAY’ technique) in a sample of 663 individuals, including 346 healthy individuals European--Americans (EAs) and 48 African--Americans (AAs), and 317 individuals with schizophrenia (235 EAs and 82 AAs). Thirty-eight ancestry-informative markers were genotyped in this sample to infer the ancestry proportions. Diplotype, haplotype, genotype, and allele frequency distributions were compared between the cases and controls, controlling for possible population stratification, admixture, and sex-specific effects, and taking interaction effects into account, using a logistic regression analysis (an extended structured association method). Results Conventional case-control comparisons showed that genotypes of the markers P1578 (rs1018381) and P1583 (rs909706) were nominally associated with schizophrenia in EAs and in AAs, respectively. These associations became less or nonsignificant after controlling for population stratification and admixture effects (using structured association or regression analysis), and became nonsignificant after correction for multiple testing. However, regression analysis showed that the common diplotypes (ACCCTT/GCCGCC or GCCGCC/GCCGCC) and the interaction effects of haplotypes GCCGCC×GCCGCC significantly affected risk for schizophrenia in EAs, effects that were modified by sex. Fine-mapping using δ or J statistics located the specific markers (δ: P1328; J: P1333) closest to the putative risk sites in EAs. Conclusion This study shows that DTNBP1 is a risk gene for schizophrenia in EAs. Variation at DTNBP1 may modify risk for schizophrenia in this population." @default.
• W2032267613 created "2016-06-24" @default.
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• W2032267613 date "2009-12-01" @default.
• W2032267613 modified "2023-09-25" @default.
• W2032267613 title "Association study of DTNBP1 with schizophrenia in a US sample" @default.
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• W2032267613 doi "https://doi.org/10.1097/ypg.0b013e32832a50bc" @default.
• W2032267613 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2771321" @default.
• W2032267613 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19862852" @default.
• W2032267613 hasPublicationYear "2009" @default.
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