RESUMO
Objective To investigate the association between the tumor necrosis factor (TNF)-α-308 G＞A polymorphism and risk of non-Hodgkin lymphoma (NHL).Methods PubMed,CNKI and Wanfang dataknowledge service platform were searched to obtain relevant literature by using the following terms:lymphoma and (tumor necrosis factor or TNF) and (polymorphism or SNP or variant or mutation).Overall results were combined by using fixed effect model or random effect model.Publication bias was evaluated by using the Begg funnel plot and Egger test.Results Fifteen eligible studies were identified,including 9 738 NHL cases and 10 854 controls.The results of the overall meta-analysis showed that the TNF-α-308 AA genotype was associated with increased risk of NHL in two genetic models (AA vs.GG:OR =1.55,95 ％ CI 1.30-1.86,I2 =42.4 ％;AA vs.AG+GG:OR =1.53,95 ％ CI 1.27-1.83,I2 =41.8％).Stratified by ethnicity,TNF-α-308 A allele was associated with an increased NHL risk in Caucasians (A vs.G;AA vs.GG;AG vs.GG;AA vs.AG+GG;AA+AG vs.GG) but a decreased risk in Asians (A vs.G;AG vs.GG;AA+AG vs.GG).Conclusion The TNF-o-308 G＞A polymorphism is associated with the risk of NHL.