Abstract
The objective of this study was to examine the effect of genetic variants in fat mass and obesity associated (FTO) gene on metabolic syndrome (MetS). A systematic literature search was performed and random-effects meta-analysis was used to evaluate genetic variants in FTO with MetS. A gene-based analysis was conducted to investigate the cumulative effects of genetic polymorphisms in FTO. A total of 18 studies from 13 published papers were included in our analysis. Random-effects meta-analysis yielded an estimated odds ratio of 1.19 (95% CI 1.12-1.27; P=1.38×10(-7)) for rs9939609, 1.19 (95% CI 1.05-1.35; P=0.008) for rs8050136, and 1.89 (95% CI 1.20-2.96; P=0.006) for rs1421085. The gene-based analysis indicated that FTO is strongly associated with MetS (P<10(-5)). This association remains after excluding rs9939609, a SNP that was frequently reported to have strong association with obesity and MetS. In this study, we concluded that the FTO gene may play a critical role in leading to MetS. Targeting this gene may provide novel therapeutic strategies for the prevention and treatment of metabolic syndrome.
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