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Title: Association of RS2200733 but not RS10033464 on 4q25 with atrial fibrillation based on the recessive model in a Taiwanese population.
Author: Lee KT, Yeh HY, Tung CP, Chu CS, Cheng KH, Tsai WC, Lu YH, Chang JG, Sheu SH, Lai WT.
Journal: Cardiology; 2010; 116(3):151-6. PubMed ID: 20606429.
Abstract:
OBJECTIVES: To determine the association between genetic variants on chromosome 4q25 and atrial fibrillation (AF) in a Taiwanese population. METHODS: We enrolled 200 patients with AF (mean age: 67 +/- 13 years) and 158 controls (mean age: 63 +/- 10 years). The genotypes of five SNPs, RS2634073, RS2200733, RS13143308, RS2220427 and RS10033464, were determined using multiplex single base extension methods. RESULTS: The distribution of the RS2200733 and RS10033464 genotypes did not significantly deviate from the Hardy-Weinberg equilibrium in the control group. The distribution of the RS2200733 genotypes differed significantly between the AF group and the controls (p = 0.03), whereas the distribution of the RS10033464 genotypes did not (p = 0.49). At RS2200733, patients with the CC genotype exhibited a 0.45 times higher risk of developing AF than those with the TT genotype (p = 0.02) and a recessive model was suggested (p = 0.01). After adjusting for various covariates, patients with the CC genotype remained recessively associated with a lower risk of developing AF than those with the TT genotype (odds ratio: 0.27, 95% confidence interval: 0.11-0.65; p < 0.01). CONCLUSIONS: In the Taiwanese, there is an association between SNP RS2200733 - but not RS10033464 - and the development of AF. Based on a recessive model of inheritance, individuals with SNP RS2200733 genotype CC are at a lesser risk of developing AF.

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