候选基因单核苷酸多态性与天津汉族人群甲状腺功能减退症相关性研究

Association between single nucleotide polymorphism loci of candidate gene and hypothyroidism in Tianjin Han population

Objective: To explore the relationship between the candidate single nucleotide polymorphism (SNPs) regulating thyroid function and the hypothyroidism(HT) susceptibility of Tianjin Han population, and to search the SNP loci which affecting the thyroid function. Methods: A case-control study was used and a total of 336 HT patients and 328 normal individuals were interviewed with 5 ml venous blood in Tianjin. The 8 SNP loci located in PTC, VAV3, FOXE1, KIT, CCBE1 genes were genotyped with Sequenom MassARRAY Technology. Results: Results of the alleles of gender stratification analysis showed that only rs4915077 in VAV3 gene was associated with HT, P=0.027 in male. However，among female the rs1472565 in VAV3 gene, rs17827152 in KIT gene and rs4940904 in CCBE1 were associated with HT susceptibility, and P values were 0.001, 0.012 and 0.023, respectively. Results of the genotypes of gender stratification analysis showed that only rs17827152 in KIT gene was associated with HT susceptibility, and P value was 0.034 in female. The logistic regression analysis showed that rs4915077 in VAV3 gene was statistically significant (P=0.04), and the partial regression coefficient was -0.544 in male population. In female, only rs17827152 in KIT gene was statistically significant (P=0.011), and the partial regression coefficient was -0.723. Conclusion: Rs4915077 in VAV3 gene is associated with HT susceptibility in Tianjin Han male and rs1472565 in VAV3 gene, rs17827152 in KIT gene and rs4940904 in CCBE1 are associated with HT susceptibility in female population.