Association study of integrins beta 1 and beta 2 gene polymorphism and papillary thyroid cancer

BackgroundWe investigated whether single nucleotide polymorphisms (SNPs) of integrin beta 1 (ITGB1) and integrin beta 2 (ITGB2) contribute to the development of papillary thyroid cancer (PTC).MethodsTwo synonymous SNPs (rs2230396 and rs2298141) of ITGB1 and 1 synonymous SNP (rs2352326), 1 5′ URT-region SNP (rs2070947), and 1 promoter SNP (rs2070946) of ITGB2 SNPs were genotyped using direct sequencing in 94 patients with PTC and 213 healthy controls. Genetic data were analyzed using SNPStats (http://bioinfo.iconcologia.net/SNPstats), Helix Tree (Golden Helix Inc, Bozeman, MT), and SNPAnalyzer (ISTECH Corp, Goyang City, Republic of Korea).ResultsThe promoter SNP (rs2070946) of ITGB2 was significantly associated with the development of PTC (dominant model, log-additive model). The G allele frequencies of the promoter SNP (rs2070946) of ITBG2 in patients with PTC (19.9%) were increased by about 2-fold compared with controls (10.2%).ConclusionsOur results suggest that a promoter SNP (rs2070946) of ITGB2 might be associated with a risk of PTC.