NCT06623279

Open-laBel Dose-escalation Study for CRISPR/cas13- Rna TargetInG THerapy for the Treatment of Neovascular Age-related Macular Degeneration in Phase I Trial

A Phase 1, Open-label, Multiple-cohort, Dose-escalation Study to Evaluate the Safety and Tolerability of HG202 High-fidelity CRISPR-Cas13 (hfCas13Y) RNA-targeting Therapy for Neovascular Age-related Macular Degeneration (nAMD)

• Status: Not Yet Recruiting
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 15 (estimated)
• Sponsor: HuidaGene Therapeutics Co., Ltd. · Industry
• Sex: All
• Age: 50 Years – 85 Years
• Healthy volunteers: Not accepted

Summary

Age-related macular degeneration (AMD) leads to severe and irreversible vision loss, while neovascular AMD (nAMD) accounts for 80-90% of AMD blindness. Current anti-VEGF therapies are the standard of care, but these therapies require life-long repeated intraocular injections. These frequent intravitreal injections increase the risk of complications, including submacular hemorrhage, intraocular hypertension, inflammation, and retinal detachment. Therefore, repeated treatments for nAMD place a substantial burden on healthcare systems, patients, and their caregivers. Additionally, approximately 25-35% of individuals with aggressive nAMD show suboptimal responses to the anti-VEGF therapies, experience treatment-extended failure, or require intensive, frequent intraocular injections, and do not prevent irreversible vision loss. HG202 is a CRISPR/Cas13 RNA-editing therapy delivered through one single AAV vector to partially knock down the expression of VEGFA and thus inhibit CNV formation in AMD. The long-term, stable delivery of HG202 following a one-time gene-editing therapy treatment for nAMD may potentially reduce the frequent injections and the potential risks of currently available anti-VEGF therapies since it does not rely on the long-term expression of anti-VEGF antibodies.

Conditions

• Neovascular Age-Related Macular Degeneration (nAMD)

Interventions

Type	Name	Description
GENETIC	HG202	Method of Administration: Once unilateral subretinal injection; The duration of the study includes a 4-week screening period, enrollment visit, treatment visit and 52 weeks follow-up period, 4 more years long term follow up as an extension study.

Timeline

• Start date: 2025-04-01
• Primary completion: 2027-02-01
• Completion: 2031-02-01
• First posted: 2024-10-02
• Last updated: 2024-10-02

Regulatory

• FDA-regulated drug study