Using the random-effects model, we found a significant association between E23K (rs5219) polymorphism and T2D risk with per-allele odds ratio of 1.13 (95% confidence interval: 1.10-1.15; p<10(-5)).
By using a Cox proportional hazard model, common variants in the PPARG (P12A), CAPN10 (SNP43 and 44), KCNJ11 (E23K), UCP2 (-866G>A), and IRS1 (G972R) genes were studied for their ability to predict T2D in 2,293 individuals participating in the Botnia study in Finland.
Thus, we aimed to investigate the contribution of rs1111875 (HHEX), rs1800961 (HNF4α), rs5219 (KCNJ11), rs1801282 (PPARγ), rs10811661 (CDKN2A/2B), rs13266634 (SLC30A8), rs12779790 (CDC123/CAMK1D), rs7903146 (TCF7L2), rs9282541 (ABCA1) and rs13342692 (SLC16A11) polymorphisms in the genetic background of Maya population to associate their susceptibility to develop T2D.
Rs5219 at KCNJ11 (E23K) was associated with peripheral nerve function in a Chinese population with type 2 diabetes mellitus, suggesting shared genetic factors for type 2 diabetes mellitus and diabetic polyneuropathy in this population.
Our data suggest that patients with T2D carrying the K variant of the E23K polymorphism in KCNJ11 have reduced response to sulfonylurea therapy, which results in increased HbA(1c) and consequently in lower risk for SH.
Given the phenotypic overlap between PCOS and T2DM, our objective was to investigate whether the TCF7L2 rs7903146(C/T) and the KCNJ11 E23K variants are involved in susceptibility to PCOS and related traits in a Greek population.
Our investigation confirmed the association between the KCNJ11 E23K variant and type </span>2 diabetes under a recessive model (KK vs EK+EE) in the Chinese Han population (odds ratio (OR)=1.25, 95% confidence interval (95% CI) 1.04-1.50, P=0.017).
Among the 11 loci examined, 6 were significantly associated with type 2 diabetes in our population by a logistic regression analysis, similar to previously reported results (rs4402960, P = 0.00009; rs10811661, P = 0.0024; rs5219, P = 0.0034; rs1111875, P = 0.0064; rs13266634, P = 0.0073; rs7756992, P = 0.0363).
In contrast, no significant association was observed between the KCNJ11 E23K gene polymorphism and T2D in the dominant genetic model (OR: 0.66, 95 % CI: 0.41-1.07, P = 0.09).The KCNJ11 E23K gene polymorphism is associated with T2D risk in the Chinese Han population.
For this reason, the present study looked at the contribution of ENNP1 (rs1044498), IGF2BP2 (rs1470579), KCNJ11 (rs5219), MLXIPL (rs7800944), PPARγ (rs1801282), SLC30A8 (rs13266634) and TCF7L2 (rs7903146) SNPs to the risk of T2DM in Lebanese and Tunisian Arabs.
Our study has provided supporting evidence for the role of the E23K variant in glycaemic progression in Chinese, with its effect being more evident in the early stage of T2DM, as the subjects progressed from normal glucose tolerance to prediabetes.
The current meta-analysis demonstrated that a modest but statistically significant effect of the 23K allele of rs5219 polymorphism in susceptibility to T2D.
The findings of the present study suggest that the KCNJ11 E23K variant is associated with a greater effect of sulphonylurea treatment in newly diagnosed Chinese patients with T2DM.
Lys23Lys/CC combination was associated with a 2.65-fold increased likelihood of T2D (OR = 2.65, 95% CI 1.12-6.28), whereas the Glu23Lys/CT combination also increased such likelihood (OR = 3.88, 95% CI 1.27-11.91).
Using MGA, some common gene variants were found to have little (<5%) but significant impact on the heritability of T2D related QTs [KCNJ11 (rs5219), p=0.004]; [IGF2BP2 (rs4402960), p=0.02]; [SLC30A8 (rs13266634), p=0.05]; [CAPN10 (rs2975760), p=0.031]; [FTO (rs8050136), p=0.023]; [FTO (rs9939609), p=0.018] and [SLC30A8 (rs13266634), p=0.05].
We have genotyped three single nucleotide polymorphisms associated with type 2 diabetes in a large type 1 diabetic family collection of European descent: Gly972Arg in the insulin receptor substrate 1 (IRS1) gene, Glu23Lys in the potassium inwardly-rectifying channel gene (KCNJ11), and Pro12Ala in the peroxisome proliferative-activated receptor gamma2 gene (PPARG2).
Overall, the E23K variant was found to be significantly associated with Type II diabetes (0.001 < or = p < or = .00106, corrected p-values for multiple testing p < or = 0.01).