Abstract
The study determined whether interleukin-10 (IL-10) polymorphisms confer susceptibility to systemic lupus erythematosus (SLE). A meta-analysis was conducted on the associations between the IL-10-1082 G/A, -819 C/T, -592 C/A polymorphisms and the haplotype of the IL-10-1082 G/A, -819 C/T, -592 C/A polymorphisms and SLE. A total of 19 studies involving 2828 SLE patients and 4008 controls were considered in the meta-analysis. Meta-analysis of the IL-10-1082 G/A polymorphism revealed an association between SLE and the IL-10-1082 G allele (odds ratio [OR] = 1.158, 95% confidence interval [CI] = 1.051-1.276, p = 0.003). Stratification by ethnicity indicated an association between the IL-10-1082 G allele and SLE in Europeans (OR=1.160, 95% CI = 1.039-1.296, p = 0.008). Meta-analysis stratified by ethnicity produced an association between the IL-10-819 C allele and SLE in Asians (OR = 1.308, 95% CI = 1.030-1.619, p = 0.027). Meta-analysis of the homozygous GCC/GCC haplotype failed to show a significant association with SLE in Europeans (OR = 1.223, 95% CI=0.981-1.526, p = 0.074). However, meta-analysis of the GCC haplotype revealed a significant association with RA in all study subjects (OR = 1.402, 95% CI = 1.001-1.964, p = 0.049). Stratification by ethnicity indicated an association between the GCC haplotype and SLE in Europeans (OR = 1.656, 95% CI = 1.087-2.523, p = 0.019), but not in Asians (OR = 1.100, 95% CI = 0.703-1.721, p = 0.677). Meta-analysis of homozygous ATA/ATA haplotype failed to show a significant association with SLE in overall and European groups. However, meta-analysis of the ATA haplotype revealed a significant association with SLE in all study subjects (OR = 1.516, 95% CI = 1.039-2.213, p = 0.031) and Asians (OR = 2.580, 95% CI = 2.086-3.192, p < 1 × 10(-9)), but not in Europeans (OR = 1.233, 95% CI = 0.816-1.862, p = 0.320). This meta-analysis suggests that the IL-10 polymorphisms confer susceptibility to SLE in Europeans and in Asians.
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