SCORE2 Report 20: Relationship of Treatment Discontinuation With Visual Acuity and Central Subfield Thickness Outcomes

To investigate the relationship of anti-VEGF treatment discontinuation with baseline factors and outcomes in eyes treated initially with aflibercept or bevacizumab for macular edema from central or hemiretinal vein occlusion.Long-term follow-up after a randomized clinical trial from 64 US centers.Analysis included 150 SCORE2 Month 60 completers classified into three groups: discontinued treatment early, treated intermittently, and treated continuously. Outcomes included visual acuity (VA) and central subfield thickness (CST).Those who discontinued treatment early were younger (60.9 years, versus 66.7 and 70.5 for the treated intermittently and treated continuously groups; P=0.001), and 17.4% were black, compared to 19.5% and 4.7% for the treated intermittently and treated continuously groups (P=0.006). At Month 60, the discontinued treatment early group had a higher proportion with complete resolution of macular edema (69.6%) than those treated intermittently (15.0%) and treated continuously (15.7%) (P0.001). Least squares means analyses over follow-up demonstrated that the discontinued treatment early group had lower mean CST (257µm) than the treated intermittently (CST=303µm, P=0.02) and treated continuously (CST=300µm, P=0.01) groups.Compared to those treated continuously, those who discontinued treatment early were younger and more likely black. The discontinued treatment early group had a higher proportion with complete resolution of macular edema at Month 60, and lower mean CST over follow-up, but not better VA, than the treated continuously and treated intermittently groups. Results support the need for continued monitoring and individualized treatment for patients treated with anti-VEGF for macular edema from central or hemiretinal vein occlusion.Clinical trial identifier at clinicaltrials.gov: NCT01969708.