Abstract
The association between the interleukin-1 beta (IL-1β) C-511T (or rs16944) polymorphism and periodontitis remains inconclusive, even though there have been previous studies on this association. To assess the effects of IL-1β C-511T variants on the risk of development of periodontitis, a meta-analysis was performed in a single ethnic population. Studies, published up to December 2015, were selected for the meta-analysis from PubMed and Chinese databases. The associations were assessed with pooled OR and 95%CI. This meta-analysis identified 8 studies, including 1276 periodontitis cases and 1558 controls. Overall, a significant association between the IL-1β C-511T polymorphism and periodontitis was found in the Chinese population (TT vs CC: OR = 1.48, 95%CI = 1.19-1.85; TT + CT vs CC: OR = 1.50, 95%CI = 1.25-1.81; T vs C: OR = 1.33, 95%CI = 1.06-1.68). In the subgroup analyses based on geographical area(s), source of controls, and type of periodontitis, significant results were obtained for the association between IL-1β C-511T variants and periodontitis. Our meta-analysis indicated that the IL-1β C-511T polymorphism may be a genetic susceptibility factor for periodontitis in the Chinese population. This marker could be used to identify Chinese individuals at a high risk for periodontitis.
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