Abstract
We aimed to explore the association between interleukin-17 (IL-17) polymorphisms, Helicobacter pylori infection, and subsites in gastric cancer risk in a Chinese population. We genotyped three promoter polymorphisms (rs2275913G>A, rs3748067C>T, and rs763780T>C) of IL-17 in a case–control study of 260 gastric cancer patients and 512 healthy controls. An unconditional multiple logistical regression model was used to calculate the effects of IL-17 gene polymorphisms on gastric cancer risk. The rs2275913 AA (adjusted OR = 1.69, 95 % CI = 1.15–2.49) and rs3748067 TT (adjusted OR = 1.73, 95 % CI = 1.03–2.94) genotypes were associated with an increased risk of gastric cancer. We observed a significant interaction among rs2275913G>A, rs3748067C>T, and H. pylori infection on the risk of gastric cancer (p for interaction of 0.036 and 0.048, respectively). H. pylori infection subjects carrying the rs2275913 AA (adjusted OR = 2.48, 95 % CI = 1.49–4.12) and rs3748067 TT (adjusted OR = 2.54, 95 % CI = 1.34–5.12) genotypes had a greatly increased risk of gastric cancer compared to negative H. pylori participants. Similarly, subjects carrying the rs2275913 AA (adjusted OR = 2.09, 95 % CI = 1.25–3.45) and rs3748067 TT (adjusted OR = 2.29, 95 % CI = 1.20–4.20) genotypes had a moderately increased risk of noncardia gastric cancer. A significant interaction was observed between the rs2275913G>A and rs3748067C>T genotype and subsites of gastric cancer (p for interaction of 0.044 and 0.008, respectively). The rs2275913G>A and rs763780T>C polymorphisms increase gastric cancer risk, and interact with H. pylori infection and subsites. These findings could be helpful in identifying individuals at increased risk for developing gastric cancer.
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We thank the staff from the Department of General Surgery of PLA Jinan General Hospital and patients who provides blood samples for us.
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Zhang, X., Zheng, L., Sun, Y. et al. Analysis of the association of interleukin-17 gene polymorphisms with gastric cancer risk and interaction with Helicobacter pylori infection in a Chinese population. Tumor Biol. 35, 1575–1580 (2014). https://doi.org/10.1007/s13277-013-1217-x
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DOI: https://doi.org/10.1007/s13277-013-1217-x