Abstract
IL-6 might play an important role in the mechanism of chronic obstructive pulmonary disease (COPD). This study assessed the relationship of rs1800796 and rs1800797 of IL-6 with COPD. We conducted meta-analysis and gene expression analysis using published datasets to examine the associations between IL-6 SNPs and COPD. rs1800796 was significantly associated with COPD, yielding a pooled odds ratio of 0.52 (95% CI: 0.33-0.84; p = 0.007), and showed cis-expression quantitative trait locus associations (p = 0.02148). Differential gene expression analysis found that IL-6 was upregulated in COPD cases compared with controls. The associations of rs1800797 with COPD were not significant. The findings showed that rs1800796 was associated with COPD in Europeans and might affect COPD risk through disturbing IL-6 gene expression.
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