03 June 2015 : Meta-Analysis
Association between Interleukin-1β Gene –511C>T/+3954C>T Polymorphisms and Aggressive Periodontitis Susceptibility: Evidence from a Meta-AnalysisYuan-Yuan HuBDEF, Jun-Hua LiuBDEF, Guang-Bin JiangBF, Rui-Xia YuanCE, Yu-Ming NiuAEG, Ming ShenAEG
Med Sci Monit 2015; 21:1617-1624
BACKGROUND: Interleukin-1β (IL-1β) is an important inflammatory cytokine. The associations between IL-1β gene –511C>T/+3954C>T polymorphisms and aggressive periodontitis (AgP) susceptibility have been conflicting. We therefore conducted a meta-analysis to investigate the association of IL-1β genetic polymorphisms with susceptibility to AgP.
MATERIAL AND METHODS: PubMed and Embase electronic databases were searched for relevant studies. Odds ratios (ORs) with 95% confidence interval (CIs) were used to assess the association between IL-1β polymorphisms and AgP risk. Heterogeneity, publication bias, and sensitivity analysis were performed to guarantee the statistical power.
RESULTS: Twenty published studies involving 965 patients and 1234 control subjects were included. No significant association between IL-1β polymorphisms and AgP was found. For –511C>T (T vs. C: OR=0.966, 95%CI=0.696–1.341, P=0.869; CT vs. CC: OR=0.936, 95%CI=0.761–1.151; TT vs. CC: OR=0.892, 95%CI=0.464–1.715, P=0.719; CT+TT vs. CC: OR=1.026, 95%CI=0.795–1.323; TT vs. CC+CT: OR=0.864, 95%CI=0.436–1.713). For +3954C>T (T vs. C: OR=1.069, 95%CI=0.901–1.268; CT vs. CC: OR=0.921, 95%CI=0.699–1.212; TT vs. CC: OR=1.064, 95%CI=0.747–1.515; CT+TT vs. CC: OR=0.990, 95%CI=0.764–1.283; TT vs. CC+CT: OR=1.229, 95%CI=0.919–1.643). Subgroup analyses were conducted with HWE, ethnicity, and study design, and no significant association was detected.
CONCLUSIONS: These results demonstrate that IL-1β –511C>T and +3954C>T polymorphisms are not the risk factors for developing AgP.
Keywords: Genetic Association Studies, Aggressive Periodontitis - genetics, Genetic Predisposition to Disease - genetics, Interleukin-1beta - genetics, Odds Ratio, Polymorphism, Single Nucleotide - genetics, PubMed
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