Genotyping and meta-analysis of KIF6 Trp719Arg polymorphism in South Indian Coronary Artery Disease patients: A case-control study

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Abstract

The KIF6 719Arg allele is an interesting genomic variant widely screened in various populations and is reported to be associated with the risk of Coronary Artery Disease (CAD) and statin treatment outcome. Recent population based clinical studies and large-scale meta-analyses pondered over the role of 719Arg variant in CAD risk and treatment response. We screened the KIF6 Trp719Arg polymorphism (rs20455) in south Indian CAD patients in a case-control approach. A total of 1042 samples (510 CAD patients and 532 controls) were screened for the KIF6 Trp719Arg SNP by TaqMan SNP genotyping assay, followed by meta-analysis of the genotype data of non-Europeans reports. The 719Arg risk genotype (GG) was observed in 29.6% of CAD cases and in 30.1% of controls with an odds ratio (OR) of 1.07 (95% CI: 0.76-1.50), p value. =. 0.709. No significant difference in the genotype frequency was observed between CAD and controls in both dominant model (AG. +. GG vs AA) and allelic model (719Arg vs 719Trp) with an OR of 1.11 (p. =. 0.491) and 1.03 (p. =. 0.767), respectively. The covariate analysis indicated that smoking & alcohol consumption increased the risk for MI among CAD patients. Meta-analysis showed that the KIF6 719Arg allele is not associated with CAD risk in both fixed effect (p. =. 0.515, OR. =. 1.023, 95% CI. =. 0.956-1.094) and random effect (p. =. 0.547, OR. =. 1.022, 95% CI. =. 0.953-1.096). The symmetrical shape of the Egger's funnel plots revealed that there is no publication bias. These results suggest that there is no association of KIF6 719Arg allele with CAD risk in South Indian population and the meta-analysis confirms the same among non-European population.

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Vishnuprabu, D., Geetha, S., Bhaskar, L. V. K. S., Mahapatra, N. R., & Munirajan, A. K. (2015). Genotyping and meta-analysis of KIF6 Trp719Arg polymorphism in South Indian Coronary Artery Disease patients: A case-control study. Meta Gene, 5, 129–134. https://doi.org/10.1016/j.mgene.2015.07.001

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