The -572G/C polymorphism in interleukin-6 (IL-6) gene is associated with the development of cancer. However, previous studies have shown conflicting results; therefore, the association must be verified by an appropriate meta-analysis. For this purpose, we performed a literature search of the PubMed database to identify all reports on association between the IL-6 -572G/C polymorphism and cancer risk. Summary odds ratios (OR) and 95% confidence intervals (95%CI) were calculated for the -572G/C polymorphism and cancer in a fixed- and random-effect model, as appropriate.
This study aimed to investigate the effect of sevoflurane on serum levels of interleukin (IL)-6 and IL-8 in patients who underwent cardiopulmonary bypass (CPB). The strength of the association between sevoflurane treatment and serum level of IL-6 and IL-8 was determined in patients who underwent CPB by summary standard mean differences (SMDs); 95% confidence interval (CI) was used.
Association studies of interleukin-6 (IL-6) -174G>C polymorphism and chronic obstructive pulmonary disease (COPD) have yielded inconsistent results, possibly because single studies often lack sufficient statistical power. A comprehensive search was performed in the PubMed, Embase, Elsevier, Web of Science databases, Wanfang, and the Chinese National Knowledge Infrastructure (CNKI) databases for published studies investigating the associations between IL-6 -174G>C polymorphism and COPD.