Abstract
To investigate the relationship between KCNN3 SNP (single-nucleotide polymorphism) rs13376333 and risk of atrial fibrillation (AF) and to provide evidence for prevention and treatment for AF.The PubMed, Embase, OVID, Cochrane library, CNKI, and Wan Fang databases were searched to identify studies on the relationship between KCNN3 SNP rs13376333 polymorphism and atrial fibrillation. Two authors performed independent article reviews and study quality assessment using the Newcastle-Ottawa Scale (NOS) checklist.Seven studies involving 24,339 individuals were included in the meta-analysis. The overall combined OR of rs13376333 polymorphism was observed for both lone AF (OR: 1.58 [95%CI: 1.37 to 1.82]; P < 0.001; I(2) = 47.0%) and total AF (OR: 1.33 [95%CI: 1.14 to 1.54]; P < 0.001; I(2) = 0). Further, when stratified by ethnicity, control sources, sample sizes, and genotyping method, similar results were observed in both subgroups. Sensitivity analysis revealed that the source of control was the source of the heterogeneity for lone AF. Omission of any single study had little effect on the combined risk estimate. No evidence of publication bias was found.This meta-analysis suggests that KCNN3 SNP rs13376333 polymorphism significantly increases the risk of lone AF and total AF, which suggests the rs13376333 polymorphism of the KCNN3 gene may play an important role in the pathogenesis of AF.
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