NCT06031727

CRISPR/cas13-medIated RNA TarGeting THerapy for the Treatment of Neovascular Age-related Macular Degeneration Investigator-initiated Trial (SIGHT-I)

A Trial to Evaluate the Safety, Tolerability, and Efficacy of CRISPR-Cas13 RNA-editing Therapy Targeting Knockdown of Vascular Endothelial Growth Factor a (HG202) in the Treatment of Neovascular Age-related Macular Degeneration (nAMD)

• Status: Recruiting
• Phase: EARLY_Phase 1
• Study type: Interventional
• Enrollment: 12 (estimated)
• Sponsor: HuidaGene Therapeutics Co., Ltd. · Industry
• Sex: All
• Age: 50 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

Age-related macular degeneration (AMD) is a progressive disease leading to severe and irreversible vision loss of which the neovascular AMD (nAMD) accounted for 90% blindness in AMD. nAMD is primarily driven by the perturbation of vascular endothelial growth factor (VEGF). VEGF overexpression leads to abnormal growth of choroidal neovascularization (CNV), which is a hallmark of AMD. Although anti-VEGF agents are effective in treating nAMD, long-term efficacy decreases over time due to the need for repeated injections impacting patient compliance with treatment regimen while patients still may lose vision during the 7th or 8th year of treatment. These frequent intravitreal injections can increase the risk of complications, including submacular hemorrhage, intraocular hypertension, inflammation, and retinal detachment. Furthermore, there are up to 46% of nAMD patients using anti-VEGF agents who have shown poor response or have developed tachyphylaxis with anti-VEGF therapies. HG202 is a CRISPR/Cas13 RNA-editing therapy packaging novel high-fidelity Cas13 technology using one single AAV vector to partially knock-down the expression of VEGFA and thus inhibit CNV formation in AMD patients who are either responsive or non-responsive to anti-VEGF agents. The long-term, stable delivery of HG202 following a one (1) time gene-editing therapy treatment for nAMD could potentially reduce the frequent injection treatment burden of currently available therapies AND treat nAMD patients who are non-responsive to anti-VEGF therapies and have no treatment.

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 is about 52 weeks for each subject including a 4 weeks screening period, enrollment/baseline visit, treatment visit and 48 weeks follow-up period.

Timeline

• Start date: 2023-09-04
• Primary completion: 2025-06-30
• Completion: 2026-06-30
• First posted: 2023-09-11
• Last updated: 2025-03-17

Locations

2 sites across 1 country: China