Association of ARMS2/LOC387715 A69S, CFH Y402H, and CFH I62V polymorphisms with retinal angiomatous proliferation compared with typical age-related macular degeneration: a meta-analysis

Long-term outcomes and the association between early detection of retinal pigment epithelial atrophy and remission after loading dose in eyes with retinal angiomatous proliferation

PURPOSE

To investigate the association between early detection of retinal pigment epithelial (RPE) atrophy after anti-vascular endothelial growth factor (VEGF) treatment and the long-term treatment outcomes in eyes with retinal angiomatous proliferation (RAP).

STUDY DESIGN

A retrospective observational study METHODS: All patients with treatment-naive RAP initially received three monthly anti-VEGF administration with or without photodynamic therapy (PDT), followed by as-needed anti-VEGF administration. At 12 months post-injection, they were divided into two groups depending on the presence or absence of RPE atrophy. The visual and anatomic outcomes, and the incidence of 12-month remission were investigated within a 48-month follow-up.

RESULTS

Thirty-seven eyes of 37 patients were included. The mean age was 80.4 ± 7.0 years, 54% were women. In the atrophy (+) group, 58.3% of patients achieved 12-month remission, significantly higher than the atrophy (-) group (p = 0.04). During the study period, best corrected visual acuity in the atrophy (+) group deteriorated from 0.50 ± 0.43 logMAR to 0.66 ± 0.47 logMAR (p = 0.14), while in the atrophy (-) group, it deteriorated significantly from 0.48 ± 0.27 logMAR to 0.76 ± 0.42 logMAR (p = 6.7×10-3). The mean additional injections in the atrophy (+) group were significantly smaller compared with the atrophy (-) group at 3.5 ± 4.7 versus 15.3 ± 4.3, respectively (p = 9.0×10-6).

CONCLUSION

Early detection of RPE atrophy was associated with the incidence of 12-month remission and reduced number of additional injections. The formation of RPE atrophy might suggest a decrease in the disease activity of RAP.

Role of CFH Y402H and ARMS2 A69S polymorphisms in susceptibility to post rhegmatogenous retinal detachment macular complications

INTRODUCTION

Rhegmatogenous retinal detachment (RRD) is the most common type of retinal detachment. Purpose of this study is to evaluate the possible association of ARMS2 (age-related macular susceptibility 2) A69S and CFH (complement factor H) Y402H polymorphisms with post-surgical macular complications.

MATERIALS AND METHODS

One hundred and two RRD patients with macular involvement and proliferative vitreoretinopathy grade A prospectively were enrolled in the study. All patients were genotyped for two polymorphisms of CFH Y402H and ARMS2 A69S by applying Polymerase Chain Reaction (PCR)-Restriction Fragment Length Polymorphism (RFLP). Scleral buckling or deep vitrectomy performed based on surgeon decision. Optical coherence tomography (OCT) for all patients was performed on three, six, and twelve months after operation.

RESULTS

The ARMS2 A69S GT genotype showed significant association with postoperative cystoid macular edema (OR = 3.11, P = 0.039). Logistic regression analysis showed that the effect of ARMS2 GT vs GG genotype remained significant on CME after confounding factors correction. (ARMS2 GT vs GG OR = 4.79, p value = 0.035). No association was observed between studied genotypes and postoperative persistent subfoveal fluid, macular atrophy, and macular epiretinal membrane.

CONCLUSIONS

The ARMS2 A69S GT genotype was significantly associated with postoperative cystoid macular edema in RRD cases with macular involvement.

Association of HTRA1 and CFH gene polymorphisms with age-related macular degeneration in Ningbo, China

BACKGROUND

Age-related macular degeneration (AMD) is one of the major causes of blindness, and the incidence of this disease has been increasing in recent years.

OBJECTIVE

To investigate the association between the single nucleotide polymorphisms (SNPs) of the high temperature requirement factor A-1 (HTRA1) and complement factor H (CFH) genes and susceptibility to AMD in Ningbo, China.

METHODS

Ninety-eight patients with AMD and seventy-three controls were recruited at the Sixth Hospital of Ningbo from August 2017 to April 2019 in China. Genomic DNA was extracted from the venous blood provided by the hospital, and the genotypes of the AMD susceptibility genes CFH and HTAR1 were detected by polymerase chain reaction and sequenced directly. The SNPs rs11200638 on the HTRA1 gene and rs3753394 on the CFH gene were selected for genotype and association analysis. The correlations between the different genotypes of HTRA1 and CFH and AMD were analysed by the Chi-squared test.

RESULTS

All the genotypes adhered to the Hardy-Weinberg equilibrium. There were three genotypes (AA, AG and GG) in HTRA1 (rs11200638). The differences in genotypes and allele frequency between the AMD group and the control group were statistically significant (P < 0.05). The A allele was a risk allele (OR: 4.19, 95% Cl: 2.28 ~ 7.70, P < 0.05), with a frequency of 61.7% in patients versus 43.8% in controls. However, the rs3753394 SNP in CFH was not associated with AMD in our study (P > 0.05).

CONCLUSIONS

The rs11200638 SNP of the HTRA1 gene is associated with AMD, and the AA genotype is a risk factor for AMD in the Ningbo population. There is no significant correlation between the rs3753394 SNP of the CFH gene and AMD.

Complement factor B gene polymorphisms and risk of age-related macular degeneration: A meta-analysis

Objective:

To investigate the potential correlation between complement factor B polymorphisms and age-related macular degeneration.

Methods:

We retrieved relevant articles systematically by searching PubMed and Web of Science databases. The pooled odds ratios and 95% confidence intervals were calculated for five complement factor B polymorphism rs641153, rs4151667, rs1048709, rs2072633, and rs12614 using data from included articles in both random effects and fixed effect models. Subgroup meta-analysis based on age-related macular degeneration type, choroidal neovascular disease (rs641153 and rs4151667), geographic atrophy (rs641153 and rs4151667), and races was also performed.

Results:

In the overall comparison, we observed that the distribution of rs641153 and the risk of age-related macular degeneration were significantly correlated (p < 0.00001). Similar results were obtained in subgroup analysis based on race (Caucasians, p < 0.00001; Asians, p = 0.003) and age-related macular degeneration type (choroidal neovascular disease, p < 0.00001; geographic atrophy, p = 0.04). As for complement factor B rs4151667, the genotypic effects were also demonstrated statistically significant in overall analysis (p < 0.00001) and only in Caucasians diagnosed with choroidal neovascular disease (p = 0.004), but not in Asians. Moreover, no statistically significant correlations between the complement factor B polymorphisms rs1048709 (p = 0.63), rs2072633 (p = 0.72), rs12614 (p = 0.98) and susceptibility to age-related macular degeneration were detected in either overall or subgroup analysis.

Conclusion:

Collectively, we demonstrated that the complement factor B genes rs641153 and rs4151667, but not rs1048709, rs2072633, rs12614, were associated with the susceptibility of age-related macular degeneration and might play predictive roles in future age-related macular degeneration diagnosis. More studies are needed to verify these findings.