Journal
HUMAN IMMUNOLOGY
Volume 76, Issue 1, Pages 6-12Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.humimm.2014.12.011
Keywords
IL-17A; IL-17F; Polymorphism; Cancer
Categories
Funding
- National Basic Research Program of China (973 Program) [2010CB529304]
- Science and Technology Project of Liaoning province [2011225002, 2012225016]
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Increasing number of studies focused on the association of IL-17A rs2275913 and IL-17F rs763780 polymorphisms with gastric cancer (GC) risk. However, the results were inconsistent. To elucidate the exact association, we performed the present meta-analysis. Databases including PubMed, Web of knowledge and Chinese National Knowledge Infrastructure (CNKI) were systematically searched for potentially eligible literatures. Odds ratios (OR) and their 95% confidence interval (CI) were used to evaluate the strength of association. Eight studies for IL-17A rs2275913 (3345 cases and 4427 controls) and five studies for IL-17F rs763780 (1784 cases and 2592 controls) were finally included. The results indicated that individuals with AA genotype of IL-17A rs2275913 polymorphism were associated with increased GC risk compared with wild-type GG (OR = 1.61, 95% CI = 1.17-2.23, P = 0.004); A allele was significantly associated with increased GC risk compared with G allele (OR = 1.22, 95% CI = 1.06-1.41, P = 0.007). IL-17F rs763780 polymorphism was also significantly associated with increased GC risk (CC vs. CT: OR = 1.40, 95% CI = 1.04-1.88, P = 0.025; CT vs. TT: OR = 1.35,95% CI = 1.16-1.58, P < 0.001; C allele vs. T allele: OR = 1.30, 95% CI = 1.15-1.47, P < 0.001). In summary, IL-17A rs2275913 A/G polymorphism and IL-17F rs763780 C/T polymorphism might be associated with increased GC risk in Asians. Further large-scale studies are still required to confirm the results of this meta-analysis. (C) 2014 Published by Elsevier Inc. on behalf of American Society for Histocompatibility and Immunogenetics.
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