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PURPOSE 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. MATERIALS AND METHODS 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. RESULTS 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. CONCLUSIONS 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.

BackgroundThe 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 and IL-8 genes polymorphisms with Age-Related Macular Degeneration (AMD). MethodA 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.ResultsA total of 12 case-control studies with 4804 AMD patients and 4422 healthy controls were included in this meta-analysis. We found significant associations under the genotypic and allelic models of TLR4/rs4986790 (AA vs. AG+GG: OR=0.73 [0.55-0.97], P=0.03; and AA vs. AG: OR=0.71 [0.53-0.95], P=0.02) and IL-8/rs2227306 (TT vs. CC: OR=1.63 [1.04-2.56], P=0.03; CC vs. TT+TC: OR=0.62 [0.48-0.80], PP=0.007; and C vs. T: OR=0.71 [0.64-0.78], P

Background Age-related Macular Degeneration (AMD) is a complex eye disease, which is genetically associated with different susceptibility loci. We planned to investigate the possible association of Complement Factor B (CFB) rs4151667 (L9H) variants and their possible interaction with Complement Factor H (CFH) Y402H and Complement factor 3 (C3) rs2230199 (R102G) in AMD. Methods This case-control association study included 216 advanced type AMD patients and 191 healthy individuals for evaluation. Extracted-DNA samples were genotyped for the polymorphic regions of CFB rs4151667 (L9H), CFH Y402H and C3 rs2230199 (R102G). Results The distribution of CFB rs4151667 (L9H) genotypes was not significantly different in the AMD patients compared to that of controls (P = 0.18). The AT genotype frequencies for CFB was non significantly lower in AMD group (6.5% vs. 13.1%, AOR = 0.49, CI = 0.23–1.04, P = 0.064(. The A allele of CFB rs4151667 (L9H) was found to be non-significantly lower in AMD patients. CFB rs4151667 (L9H) had no protective interactional effect against CFH (Y402H) and C3 (R102G) risk variants. Conclusions This study showed that the protective role of CFB rs4151667 (L9H) in AMD is not significant and it has no significant protective interactional effect against CFH (Y402H) and C3 (R102G) risk variants.