The dystrobrevin binding protein 1 (DTNBP1) gene is associated with schizophrenia in the Irish Case Control Study of Schizophrenia (ICCSS) sample.
BACKGROUND
DTNBP1 is associated with schizophrenia in many studies, but the associated alleles and haplotypes vary between samples.


METHODS
We assessed nine single nucleotide polymorphisms (SNPs) in this gene for association with schizophrenia in a new sample of 1021 cases and 626 controls from Ireland.


RESULTS
Four SNPs give evidence of association (0.000018<p<0.045), most strongly with the common allele at rs760761. A haplotype of the common alleles of five markers (including rs760761) and the minor allele of rs2619538 overlapping the 5' end of the DTNBP1 gene also gives evidence for association (p=0.0002). Secondary analyses showed no difference in the association signal based on sex or family history. These results are in agreement with the most consistently observed association with common alleles and common-allele haplotypes, reported in a previous study of Irish cases and controls but not in an Irish high-density family sample. Our results do not support the prior report from a Swedish sample of increased association in cases with a family history of psychotic illness. Comparison of human, chimpanzee and rhesus sequence suggest that rs760761 is a particularly variable position in the primate lineage.


CONCLUSIONS
This study provides further evidence from a large case/control sample for association of common DTNBP1 alleles and haplotypes with schizophrenia.
Department of Psychiatry, Virginia Commonwealth University, Richmond, VA, USA. bpriley@vcu.edu
Brien
B
Riley
Po-Hsiu
PH
Kuo
Brion S
BS
Maher
Ayman H
AH
Fanous
Jingchun
J
Sun
Brandon
B
Wormley
F Anthony
FA
O'Neill
Dermot
D
Walsh
Zhongming
Z
Zhao
Kenneth S
KS
Kendler
D002352:Carrier Proteins / Q000235:genetics*; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D019295:Computational Biology; D000074765:Dysbindin; D049029:Dystrophin-Associated Proteins; D005192:Family Health; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D007494:Ireland / Q000453:epidemiology; D016015:Logistic Models; D008297:Male; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D012307:Risk Factors; D012559:Schizophrenia / Q000235:genetics*
D002352:Carrier Proteins; C432416:DTNBP1 protein, human; D000074765:Dysbindin; D049029:Dystrophin-Associated Proteins