A Phase 1/2 Dose-Escalation and Randomized, Controlled, Masked Expansion Trial of Intravitreal 4D-150 Gene Therapy in Adults With Neovascular (Wet) Age-Related Macular Degeneration

What this Trial Is About

Researchers are evaluating the safety and effects of a gene therapy called 4D-150 in adults aged 50 years and older with neovascular (wet) age-related macular degeneration (AMD) who are currently receiving anti-VEGF treatments and have shown a positive response. This Phase 1/2 trial includes a dose-escalation stage, a randomized controlled expansion phase, and additional cohorts to optimize steroid use and extend the population studied. The study also includes substudies to assess dosing safety in the opposite eye and to examine vector shedding. Participants receive a single injection of 4D-150 into the eye on Day 1 at assigned dose levels. Some participants receive aflibercept injections as an active comparator. Following the injection, participants are monitored monthly for 24 months to track safety and treatment effects. Those who receive 4D-150 enter a long-term follow-up period lasting up to five years to evaluate extended safety and the duration of the gene therapy’s activity. The substudies include one-time dosing in the contralateral eye and assessments of vector shedding, with safety monitored for one year and continued follow-up through five years. Throughout the study, participants undergo regular eye function and structure tests, including visual acuity and retinal thickness measurements using imaging technologies. Researchers track adverse events and the need for additional aflibercept injections, as well as changes in vision and retinal health. Participants must comply with study procedures and agree to use barrier methods during and after treatment to prevent fluid transmission. The study ensures comprehensive safety monitoring, with evaluations continuing for up to five years after treatment administration.

4D-150 in Patients With Neovascular (Wet) Age-Related Macular Degeneration