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Quantitative assessment of common genetic variants on FOXE1 and differentiated thyroid cancer risk.


ABSTRACT: Forkhead box E1 encodes the transcription factor FOXE1 (or TTF-2), which together with Homeobox protein NKX2-1, PAX8 and HHEX, are pivotal proteins required for thyroid gland formation, differentiation and function. Recently, genome-wide association studies have identified FOXE1 as a thyroid cancer (TC) susceptibility gene in populations of European descent. After that, a number of studies reported that the rs965513, rs1867277, and rs71369530 polymorphism in FOXE1 has been implicated in TC risk. However, the causal variants remain unknown. To derive a more precise estimation of the relationship, a meta-analysis of 9,828 TC cases and 109,995 controls from 14 case-control studies was performed. Overall, significant results were observed for rs965513 (OR=1.71, 95% CI: 1.59-1.85, P<10(-5)), rs1867277 (OR=1.64, 95% CI: 1.51-1.78, P<10(-5)) and rs71369530 (OR=2.01, 95% CI: 1.66-2.44, P<10(-5)) polymorphism. In the subgroup analysis by ethnicity, we found that rs965513 polymorphism confer high risk for Caucasians with per-allele OR of 1.80 (95% CI: 1.69-1.92, P<10(-5)) compared to East Asians of 1.35 (95% CI: 1.09-1.67, P=0.006). There was strong evidence of heterogeneity, which largely disappeared after stratification by ethnicity. In the subgroup analysis by sample size, and study design, significantly increased risks were found for the polymorphism. In conclusion, this meta-analysis demonstrated that common variations of FOXE1 are a risk factor associated with increased TC susceptibility.

SUBMITTER: Zhu H 

PROVIDER: S-EPMC3906140 | BioStudies | 2014-01-01

REPOSITORIES: biostudies

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