Gene-gene interaction between DNMT3B and DRD1 in schizophrenia
2010
Objective To identify the impact of gene-gene interaction between DNMT3B and DRD1 on the risk of schizophrenia. Methods Two SNPs (rs2424908 and rs6119954) within DNMT3B and five SNPs (rs4532, rs5326, rs2168631, rs6882300 and rs267418 ) within DRD1 were genotyped in 365 schizophrenic patients and 365 healthy controls. The gene-gene interaction between DNMT3B and DRD1 was analyzed by Multifactor Dimensionality Reduction (MDR) software. Results The frequency of genotypes of rs6119954 within DNMT3B was significantly higher in patients than that in controls (χ2 = 8. 06 ,P =0. 018 ).MDR revealed that the significance were shown in patterns with 2 SNPs ( rs6119954-rs267418 ) ( OR =1.79, 95% CI:1.29-2.47;χ2 =12.51, P=0.0004) , 3 SNPs (rs6119954-rs5326-rs267418) (OR=2. 36, 95% CI: 1.73 - 3.22;χ2 = 29. 33, P < 0. 0001 ) and 4 SNPs ( rs2424908-rs6119954-rs5326-rs267418) (OR=3.08, 95% CI:2.24 -4.24;χ2 =48.88, P<0. 0001). Conclusion The gene-gene interaction between DNMT3B and DRD1 may exist and increase the risk for schizophrenia.
Key words:
DNA methyltransferase 3B ; Dopamine D1 receptor ; Gene-gene interaction ; Schizophrenia ;
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