Association of Combined Complement Factor H Y402h and Arms/Loc387715 A69s Polymorphisms With Age-Related Macular Degeneration: A Meta-Analysis Publisher Pubmed



Jabbarpoor Bonyadi MH¹ ; Yaseri M² ; Bonyadi M³ ; Soheilian M¹ ; Karimi S¹ Show Affiliations
Source: Current Eye Research Published:2016

Abstract

Purpose: Complement factor H (CFH) Y402H (rs1061170) and age-related maculopathy susceptibility2 (ARMS2)/LOC387715 A69S (rs10490924) polymorphisms shown to have significant association with age-related macular degeneration (AMD). In this meta-analysis, we pooled the results of the available association studies between combined ARMS2/LOC387715A69S-CFHY402H genotypes and AMD to estimate the possible synergistic or multiplicative effects. Methods: Heterogeneity of studies was evaluated using the Cochran Q-test and the I-square index. To modify the heterogeneity in the variables, we used random effects model. Meta-analysis was performed using STATA. To estimate the additive or supra-additive effects, we calculated relative excess risk due to interaction (RERI), attributable proportion due to interaction (AP), synergy index (S), and multiplicative index (V). Results: We included eight studies with 2915 AMD patients and 3505 control subjects. Considering the GGTT genotypes as reference lines, the pooled AMD Odds Ratios for stratified combined genotypes were 2.32 (95% CI 1.64–3.28) for GGnon-TT, 2.49 (95% CI 1.72–3.60) for non-GGTT, and 7.82 (95% CI 5.09–12.00) for non-GGnon-TT. Pooled synergy analysis revealed RERI = 4.08 (95% CI 3.15–5.27), AP = 0.50 (95% CI 0.42–0.57), S = 2.31 (95% CI 1.9–2.82), and V = 1.21 (95% CI 0.93–1.49). Conclusion: This analysis revealed the synergistic and positive multiplicative effect of these two genes indicating that there is a common pathway of ARMS2/LOC387715 and CFH in AMD pathogenesis which may be the complement system pathway. © 2016 Taylor & Francis.