Clinical Focus ›› 2023, Vol. 38 ›› Issue (9): 779-787.doi: 10.3969/j.issn.1004-583X.2023.09.002

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Correlation between the TNF-α-308 gene polymorphism and gastric cancer susceptibility: A meta-analysis

Lyu Chang(), Zhou Liming()   

  1. College of Life Sciences,North China University of Science and Technology,Tangshan 063210,China
  • Received:2022-09-24 Online:2023-09-20 Published:2023-11-21
  • Contact: Zhou Liming,Email: zhouliming363@163.com

Abstract:

Objective To investigate the correlation between tumor necrosis factor-α (TNF-α) promoter 308 locus (TNF-α-308) gene polymorphism and gastric cancer susceptibility. Methods Case-control studies on TNF-α-308 gene polymorphism and the susceptibility to gastric cancer published before June 2022 were searched in Pubmed, Embase, Web of Science, Cochrane library, Wanfang and China National Knowledge Infrastructure (CNKI). Literature screening, data extraction and evaluation of risk of bias were performed independently by 2 investigators. Meta-analysis was performed via Stata 16.0 software. Results A total of 41 case-control studies were included, involving 7528 gastric cancer patients and 10924 controls. Meta-analysis showed that in allelic, heterozygous and dominant models, TNF-α-308 gene polymorphisms were significantly correlated with with an increased risk of gastric cancer (A vs G: O R=1.21, 95% C I: 1.01-1.44, P=0.039; AG vs GG: O R=1.26, 95% C I: 1.07-1.49, P=0.392; AA+AG vs GG: O R=1.22, 95% C I: 1.00-1.47, P=0.046). Five studies of gastric cancer caused by Helicobacter pylori infection showed that TNF-α-308 gene polymorphisms were not correlated with susceptibility to gastric cancer. Subgroup analyses showed that all genetic models in Asian areas (A vs G: O R=1.29, 95% C I: 1.04,1.61, P=0.022; AG vs GG: O R=1.35, 95% C I: 1.06,1.71, P=0.014; AA+AG vs GG: O R=1.36, 95% C I: 1.07,1.73, P=0.013) and in African areas showed a significant correlation between TNF-α-308 gene polymorphisms and risk of gastric cancer ( P<0.05), which was not correlated in American and European areas. All genetic models in Taqman typing study showed a significant correlation between TNF-α-308 locus gene polymorphisms and risk of gastric cancer ( P<0.05). Conclusion A significant correlation between TNF-α-308 gene polymorphisms and risk of gastric cancer is found in Asian areas. It is not correlated with the susceptibility to gastric cancer caused by Helicobacter pylori infection.

Key words: stomach neoplasms, TNF-α-308, Helicobacter pylori infection, single nucleotide polymorphism, meta-analysis

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