title: Association of interleukin-1 gene polymorphisms with gastric cancer: a meta-analysis.
abstract: Previous studies on the association between interleukin-1 (IL-1) genetic polymorphisms and the risk of gastric cancer have produced conflicting results. The purpose of this study was to examine the association between IL-1 genotype and gastric cancer by systematically reviewing the risk of the original studies. Thirty-nine studies, which included 6,863 gastric cancer cases and 8,434 controls, met the inclusion criteria and were included in the meta-analysis. By pooling all the studies identified, the summary odds ratio (OR) of gastric cancer risk associated with IL-1B-511T, -31C, +3954T and IL-1RN*2 was 1.26 (95% confidence interval (CI): 1.03-1.55), 1.00 (95% CI: 0.82-1.22), 1.37 (95% CI: 0.94-2.00) and 1.20 (95% CI: 1.01-1.41), respectively. A stratified analysis showed that IL-1B-511T was associated with an increased risk of gastric cancer (intestinal type) (OR = 1.76, 95% CI: 1.12-2.57). Moreover, IL-1RN*2 was also associated with an increased risk of gastric cancer among Caucasians (OR = 1.30, 95% CI: 1.09-1.54). In conclusion, IL-1B-511 and IL-1RN genetic polymorphisms are associated with an increased risk of developing gastric cancer.
authors.affiliation: School of Public Health, Zhengzhou University, Zhengzhou, 450052, Henan Province, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Wang
authors.forename: Harry Hua-Xiang
authors.initials: HH
authors.lastname: Xia
authors.forename: Jian-Ying
authors.initials: JY
authors.lastname: Zhang
authors.forename: Li-Ping
authors.initials: LP
authors.lastname: Dai
authors.forename: Xue-Qin
authors.initials: XQ
authors.lastname: Xu
authors.forename: Kai-Juan
authors.initials: KJ
authors.lastname: Wang
mesh_terms: D004273:DNA, Neoplasm / Q000032:analysis / Q000235:genetics; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D007375:Interleukin-1 / Q000235:genetics*; D016017:Odds Ratio; D011110:Polymorphism, Genetic / Q000235:genetics*; D012150:Polymorphism, Restriction Fragment Length; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000235:genetics / Q000473:pathology*
chemical_list: D004273:DNA, Neoplasm; D007375:Interleukin-1