Key result
KCNQ1 rs2237892 polymorphism linked to ~25% higher risk of type 2 diabetes.
Why the study?
Previous studies evaluating the effect of the KCNQ1 rs2237892 polymorphism on the predisposition to type 2 diabetes mellitus have yielded inconclusive and debated findings.
Does the KCNQ1 rs2237892 polymorphism increase the risk of type 2 diabetes mellitus?
Meta-Analysis (n=153,330)
Does the KCNQ1 rs2237892 polymorphism increase the risk of type 2 diabetes mellitus?
Odds Ratio: 1.25 (95% CI 1.19–1.32)
p-value: p=<0.001
The KCNQ1 rs2237892 polymorphism is significantly associated with an increased genetic predisposition to type 2 diabetes mellitus.
Supports KCNQ1 rs2237892 as T2DM risk variant in East Asians; extends prior genetic evidence but does not yet guide clinical risk stratification.
OBJECTIVES: Previous studies have analyzed the potential effect of KCNQ1 rs2237892 polymorphism on the predisposition to type 2 diabetes mellitus, but the findings are inconclusive and the subject of debate. The purpose of our study was to provide further insight into the potential association between KCNQ1 rs2237892 polymorphism and the risk of type 2 diabetes mellitus. METHODS: In total, 50 articles (60 studies) with 77,276 cases and 76,054 controls were utilized in our analysis. The pooled odds ratio (OR), 95% confidence interval (95% CI), and p value were used to evaluate the significance of our findings. Funnel plots and Beggar's regression tests were utilized to determine the presence of publication bias. RESULTS: Our meta-analysis results indicated that KCNQ1 rs2237892 polymorphism could be correlated with the risk of type 2 diabetes mellitus under the C allelic, recessive, and dominant genetic models (OR = 1.25, 95% 1.19-1.32, p < 0.001; OR = 1.50, 95% CI 1.34-1.68, p < 0.001; OR = 1.26, 95% CI 1.14-1.40, p < 0.001, respectively). Additionally, ethnicity analysis revealed that the source of control, case size, and Hardy-Weinberg Equilibrium status were correlated to the polymorphism in the three genetic models. CONCLUSIONS: Our meta-analysis demonstrated significant evidence to support the association between KCNQ1 rs2237892 polymorphism and predisposition to type 2 diabetes mellitus.
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Jiang et al. (2021) conducted a meta-analysis in Type 2 diabetes mellitus (n=153,330). KCNQ1 rs2237892 polymorphism vs. Unexposed/reference genotype was evaluated on Risk of type 2 diabetes mellitus (C allelic model) (OR 1.25, 95% CI 1.19-1.32, p=<0.001). The KCNQ1 rs2237892 polymorphism was significantly associated with an increased risk of type 2 diabetes mellitus under the C allelic model (OR 1.25).
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