Abstract
The results from previous studies on association of TLR9 polymorphisms with the risk of systemic lupus erythematosus (SLE) remained contradictory. Therefore, a meta-analysis was performed to assess the association between TLR9 polymorphisms and SLE susceptibility. A literature-based search was conducted to identify all relevant studies. Pooled data were estimated by fixed- and random-effects models when appropriate. We examined seven publications, showing that there were only three polymorphisms (−1486C/T, +1174A/G and +1635C/T) existing in Asian populations. The meta-analysis indicated that none of these three polymorphisms showed any significant association with SLE risk in Asian populations. In conclusion, the present study indicates that TLR9 polymorphisms are not candidates for susceptibility to SLE, at least, in eastern Asian population. Furthermore, a large number of studies should be performed to explore the association of TLR9 polymorphisms with the risk of SLE in other populations, such as Europeans, Americans and Africans.
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