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Artigo | IMSEAR | ID: sea-210657

RESUMO

Single nucleotide polymorphism of brain derived neurotropic factor gene, also known as Val66Met or rs6562, wasfound to be linked to obesity. However, reports on the link between this gene variant and obesity in Caucasian andAsian populations are inconsistent. A meta-analysis was, therefore, performed to determine the association betweenVal66Met polymorphism and the risk of obesity. Electronic databases, including Embase, CINAHL, and PubMed,were searched for relevant studies published before November 2018. Random effects model was used to calculatethe pooled estimate based on the heterogeneity test results. Data were obtained from 11 studies involving 13,153individuals with obesity and 18,689 non-obese individuals. The overall estimated odds ratio did not support theproposed association (OR 0.9, 95% CI 0.793–1.136). Stratified analysis, however, showed that Val/Val genotype isassociated with increased risk of obesity among adults (OR 1.135, 95% CI 1.001–1.286) but associated with a reducedrisk among adolescents (OR 0.61, 95% CI = 0.376, 0.984). The results highlight the role of confounding factors thatneed to be addressed when making inference

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