Association Between Single Nucleotide Polymorphisms in and and Type 2 Diabetes in Chinese Population.

PURPOSE

Type 2 diabetes mellitus (T2DM) has a high global prevalence, and the interaction of environmental factors and genetic factors may contribute to the risk of T2DM. We aimed to investigate the association between T2DM and the single nucleotide polymorphisms (SNPs) in genes ( and ) associated with insulin secretion.

SUBJECTS AND METHODS

T2DM (n=1,169) and nondiabetic (NDM) (n=1,277) subjects were enrolled and the eight SNPs in and genes associated with insulin secretion were genotyped in a Chinese population using MassARRAY. Then, the association of these SNPs with T2DM was analyzed.

RESULTS

Our results revealed that four SNPs (rs4712524, rs10946398, rs7754840 in , and rs5015480 in ) showed significantly different distributions between the T2DM and NDM groups (<0.00625). The G allele of rs4712524 (=0.004, OR=1.184; 95% CI=1.057-1.327), C allele of rs10946398 (<0.001, OR=1.247; 95% CI=1.112-1.398), and C allele of rs775480 in (<0.001, OR=1.229; 95% CI=1.096-1.387) functioned as risk alleles of T2DM. The C allele of rs5015480 in (<0.001, OR=1.295; 95% CI=1.124-1.493) was also the risk factor for T2DM. The haplotype analysis revealed that haplotype rs4712524G-rs10946398C-rs7754840C-rs9460546G (=0.001, OR=1.210; 95% CI=1.076-1.360) and haplotype rs1111875C-rs5015480C (<0.001, OR=1.364; 95% CI=1.180-1.576) were the risk factors of T2DM.

CONCLUSION

Our results revealed that genetic variations in and were associated with T2DM susceptibility in Chinese population.