ABSTRACT
Background: The polymorphism of interleukin-17F rs763780 has been found to have a probable association with increased risk of developing psoriasis. Aims: This study aims to get a more convincing estimation of the association between the interleukin-17F rs763780 T/C polymorphism and psoriasis risk. Methods: Two authors independently searched the databases including PubMed, EMBASE, Cochrane Central Register of Controlled Trials, Chinese National Knowledge Infrastructure, Wanfang and Chinese Biomedical Literature Databases for case–control studies which reported the odds ratios with 95% confidence intervals comparing genotype and allele frequencies of the interleukin-17F rs763780 polymorphism in patients with psoriasis versus participants without psoriasis. Results: A total of seven case–control studies incorporating 1824 cases and 1585 controls were identified. The pooled odds ratios indicated that interleukin-17F rs763780 C allele was a risk factor for psoriasis in allele frequency, recessive model and homozygote model (P < 0.05). Subgroup analysis by ethnicity further indicated that the C allele was closely related to increased risk of psoriasis in Asian populations (P < 0.05), but not in Caucasians. Limitations: Only a few studies on the interleukin-17F rs763780 polymorphism in psoriasis have been reported till date, thus the data is insufficient. Only one gene polymorphic site was selected for this study, and it is not clear whether other genetic mutation functional sites affect the gene. Further studies on confounding effects of other genetic polymorphisms are needed. Conclusion: The present meta-analysis results suggested that the interleukin-17F rs763780 T/C is significantly associated with psoriasis risk in Asians
ABSTRACT
@# Objective: To assess the association between interleukin-17 (IL-17) gene rs763780 polymorphism and susceptibility of gastric cancer using Meta-analysis. Methods: A comprehensive search was performed on PubMed, EMBASE, the Cochrane Library, Web of Science, Wanfang Database, Chinese Biomedical Literature Database, Chinese Science and Technology Academic Journal and Chinese Journal Full-text Database from their inception to December 2017 to identify relevant case-control studies on association between interleukin-17 (IL-17) gene rs763780 polymorphism and susceptibility of gastric cancer. Meta-analysis was performed using STATA 12.0 software. Results: A total of 10 case-control studies were included in this Meta-analysis, involving 3 892 gastric cancer cases and 4 627 controls. The results showed that there was association between IL-17 rs763780 polymorphism and gastric cancer risk in allele genetic model (C vs T: OR=1.90, 95% CI=1.73-2.08), additive model (CC vs TT: OR=1.76, 95% CI=1.45-2.14), codominant model (CC vs CT: OR =1.26, 95% CI=1.13-1.42), dominant model (CC vs CT+TT: OR=1.93, 95% CI=1.65-2.26) and recessive model (TT vs CT+CC: OR=1.67, 95% CI=1.38-2.03). Conclusion: IL-17 rs763780 polymorphism increases the risk of gastric cancer.