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This case-control study aimed to evaluate the possible association of MCP-1 − 2518A/G genetic polymorphism with Behcet's disease (BD) in the Iranian patients. This study was performed in 135 Behcet's patients (51 ocular and 84 non-ocular) and 79 healthy individuals. Peripheral blood samples were genotyped for MCP-1 − 2518A/G using the PCR-RFLP technique. The statistical analysis of MCP-1 − 2518A/G showed no significant differences in genotype/allele frequencies between Behcet's patients and controls. There was no significant association in genotype/allele frequencies between either ocular or non-ocular BD patients and controls. Also, different genotype/allele frequencies between ocular and non-ocular BD were not statistically significant. In this study, with a threshold P-value of 0.05 and an estimated power of 0.81 to detect a significant association (odds ratio ≥1.2), we did not observe any association of this variant with Behcet's disease. [ABSTRACT FROM AUTHOR]

The results of different studies have indicated the possible associations of TLR4 and IL-8 genes polymorphisms with Age-related Macular Degeneration (AMD). A meta-analysis study was designed to evaluate the possible associations of TLR4 (rs4986790/c.896A>G and rs4986791/ c.1196 C > T) and IL-8 (rs4073/c.251A>T and rs2227306/c.781 C > T) genes polymorphisms with AMD. A systematic literature search was carried out in PubMed, Embase, Web of Science, and Scopus databases to identify relevant publications. Pooled Odds Ratio (OR) with 95% Confidence Interval (CI) was used to evaluate the power of association. A total of 12 case-control studies with 4804 AMD patients and 4422 healthy controls were included in this meta-analysis. The analysis of genotypic and allelic models demonstrated significant associations between IL-8 c.781 C > T (CC vs. TT+TC: OR = 0.62 [0.48–0.81], P <.01; CC vs. TC: OR = 0.65 [0.48–0.89], P <.01; TT vs. CC: OR = 1.64 [1.04–2.57], P =.03; and C vs. T: OR = 0.71 [0.65–0.79], P <.01) and risk of AMD, which all of them passed Bonferroni correction for multiple testing (P-value≤0.01), except for TT vs. CC model. In addition, we found associations under the genotypic model of TLR4 c.896A>G (AA vs. AG+GG: OR = 0.73 [0.55–0.97], P =.03; and AA vs. AG: OR = 0.71 [0.53–0.95], P =.02) although after Bonferroni correction (P′-value<0.02) none of these associations remained significant. However, the data from this meta-analysis declined the associations of TLR4 c.1196 C > T and IL-8 c.251A>T polymorphisms with AMD. The current meta-analysis study suggested that IL-8 c.781 C > T polymorphism is associated with susceptibility to AMD. [ABSTRACT FROM AUTHOR]