CDKAL1, KCNQ1, and IGF2BP2 are Identified as Type 2 Diabetes Susceptibility Genes in a Regional Chinese Population.

ABSTRACT

Aims: Diabetes has become a major public health problem in China. Recent advances in genetic studies have identified numerous susceptibility loci for type 2 diabetes (T2D). Current models to detect risk of T2D are largely based on studies from European populations; this study aims to replicate those efforts in a Chinese population from the Ningbo region in order to diversify and fortify risk models. Methodology: We successfully genotyped 11 single nucleotide polymorphisms (SNPs) in 222 subjects with T2D and 140 subjects with normal glucose regulation in a population from the Ningbo region of China. Additive and dominant models were used to analyze the associations between SNPs and T2D. Results: Adjusting for age, triglycerides, total cholesterol, low density lipoprotein, and BMI in the dominant model, we identified three SNPs which were associated T2D CDKAL1 (OR=2.29 [95%CI=1.25-4.19]), KCNQ1 (4.22 [1.79-9.99]), and IGF2BP2 (1.76 [1.06-2.94]). No significant association was found between T2D and SNPs from KCNJ11, PPARG, TCF7L2, SALC30A8, CDKN2B, HHEX, HNF1β, and WFS1. Conclusion: Our data indicates that in this population, CDKAL1, KCNQ1, and IGF2BP2 are T2D susceptibility genes.