Purpose: To compare the clinical outcomes of aflibercept used with a fixed schedule with a pro-re-nata (PRN) retreatment regimen in patients affected by neovascular age-related macular degeneration.
Methods: This is a prospective multicenter, noninferiority, propensity score-matched study evaluating the 12-month outcomes of aflibercept given either according to labeling or following a PRN regimen. Patients included in the latter group received one initial injection, followed by monthly visits and as-needed retreatment.
Results: One-to-one matching resulted in fixed and PRN arms containing 92 eyes each. Visual acuity improved from baseline to 12 months in both the study groups. At Month 4, the fixed regimen was equivalent to the PRN regimen (mean difference: 1.75 Early Treatment Diabetic Retinopathy Study letters, 95% confidence interval: -1.42 to +4.92). The pro-re-nata regimen failed to show noninferiority compared with the fixed regimen at both Month 8 (mean difference: 3.43 Early Treatment Diabetic Retinopathy Study letters, 95% confidence interval: +0.25 to +6.22) and Month 12 (mean difference: 4.83 Early Treatment Diabetic Retinopathy Study letters, 95% confidence interval: +1.37 to +8.29). All patients in the fixed group received seven injections. Patients included in the PRN arm received a mean of 5.5 ± 1.6 treatments.
Conclusions: Aflibercept given with a fixed treatment regimen produces better visual acuity outcomes than an individualized regimen.