Genetic Epidemiology, Translational Neurogenomics, Psychiatric Genetics and Statistical Genetics Laboratories investigate the pattern of disease in families, particularly identical and non-identical twins, to assess the relative importance of genes and environment in a variety of important health problems.
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PMID
16899160
TITLE
Association study of the dystrobrevin-binding gene with schizophrenia in Australian and Indian samples.
ABSTRACT
Numerous studies have reported association between variants in the dystrobrevin binding protein 1 (dysbindin) gene (DTNBP1) and schizophrenia. However, the pattern of results is complex and to date, no specific risk marker or haplotype has been consistently identified. The number of single nucleotide polymorphisms (SNPs) tested in these studies has ranged from 5 to 20. We attempted to replicate previous findings by testing 16 SNPs in samples of 41 Australian pedigrees, 194 Australian cases and 180 controls, and 197 Indian pedigrees. No globally significant evidence for association was observed in any sample, despite power calculations indicating sufficient power to replicate several previous findings. Possible explanations for our results include sample differences in background linkage disequilibrium and/or risk allele effect size, the presence of multiple risk alleles upon different haplotypes, or the presence of a single risk allele upon multiple haplotypes. Some previous associations may also represent false positives. Examination of Caucasian HapMap phase II genotype data spanning the DTNBP1 region indicates upwards of 40 SNPs are required to satisfactorily assess all nonredundant variation within DTNBP1 and its potential regulatory regions for association with schizophrenia. More comprehensive studies in multiple samples will be required to determine whether specific DTNBP1 variants function as risk factors for schizophrenia.
DATE PUBLISHED
2006 Aug
HISTORY
PUBSTATUS PUBSTATUSDATE
pubmed 2006/08/11 09:00
medline 2006/10/13 09:00
entrez 2006/08/11 09:00
AUTHORS
NAME COLLECTIVENAME LASTNAME FORENAME INITIALS AFFILIATION AFFILIATIONINFO
Holliday EG Holliday Elizabeth G EG Queensland Centre for Mental Health Research, The Park, Centre for Mental Health, Wacol, Queensland, Australia. lizh@qcmhr.uq.edu.au
Handoko HY Handoko Herlina Y HY
James MR James Michael R MR
McGrath JJ McGrath John J JJ
Nertney DA Nertney Deborah A DA
Tirupati S Tirupati Sujit S
Thara R Thara Rangaswamy R
Levinson DF Levinson Douglas F DF
Hayward NK Hayward Nicholas K NK
Mowry BJ Mowry Bryan J BJ
Nyholt DR Nyholt Dale R DR
INVESTIGATORS
JOURNAL
VOLUME: 9
ISSUE: 4
TITLE: Twin research and human genetics : the official journal of the International Society for Twin Studies
ISOABBREVIATION: Twin Res Hum Genet
YEAR: 2006
MONTH: Aug
DAY:
MEDLINEDATE:
SEASON:
CITEDMEDIUM: Print
ISSN: 1832-4274
ISSNTYPE: Print
MEDLINE JOURNAL
MEDLINETA: Twin Res Hum Genet
COUNTRY: England
ISSNLINKING: 1832-4274
NLMUNIQUEID: 101244624
PUBLICATION TYPE
PUBLICATIONTYPE TEXT
Comparative Study
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
COMMENTS AND CORRECTIONS
GRANTS
GRANTID AGENCY COUNTRY
K02-02107 PHS HHS United States
K24-MH64197 NIMH NIH HHS United States
R01-MH045097 NIMH NIH HHS United States
GENERAL NOTE
KEYWORDS
MESH HEADINGS
DESCRIPTORNAME QUALIFIERNAME
Alleles
Australia
Carrier Proteins genetics
Case-Control Studies genetics
European Continental Ancestry Group genetics
Female genetics
Genetic Predisposition to Disease genetics
Haplotypes genetics
Humans genetics
India genetics
Linkage Disequilibrium genetics
Male genetics
Polymorphism, Single Nucleotide genetics
Risk Factors genetics
Schizophrenia genetics
SUPPLEMENTARY MESH
GENE SYMBOLS
CHEMICALS
REGISTRYNUMBER NAMEOFSUBSTANCE
0 Carrier Proteins
0 DTNBP1 protein, human
OTHER ID's