NCT07063251

An Clinical Study Evaluating the Safety, Tolerability, and efficAcy of HG005 in StaRgardT Disease

An Investigator-initiated, Open-label, Dose-escalation Study to Evaluate the Safety, Tolerability, and Preliminary Efficacy of HG005 in Pediatric Patients With Stargardt Disease (STGD1) Caused by Biallelic ABCA4 Mutations

• Status: Recruiting
• Phase: EARLY_Phase 1
• Study type: Interventional
• Enrollment: 6 (estimated)
• Sponsor: HuidaGene Therapeutics Co., Ltd. · Industry
• Sex: All
• Age: 6 Years – 17 Years
• Healthy volunteers: Not accepted

Summary

Stargardt disease type 1 (STGD1) is a rare genetic eye condition that causes progressive vision loss, often beginning in childhood or adolescence. It is the most common form of inherited macular degeneration and can lead to legal blindness. STGD1 is caused by mutations in the ABCA4 gene, which normally helps clear waste from the photoreceptor cells in the retina. When ABCA4 gene doesn't function properly, toxic substances like A2E accumulate and damage the retinal pigment epithelium (RPE), leading to vision loss. There are currently no approved treatments for STGD1. HG005 is an investigational gene therapy designed to deliver a healthy copy of the ABCA4 gene to the retina. Because the gene is too large to fit into a single AAV (adeno-associated virus) vector, HG005 used two AAV vectors that work together in retinal cells to produce the full-length, functional ABCA4 protein. The goal of HG005 is to restore normal waste removal, protect retinal cells from further damage, and slow or stop vision loss.

Conditions

• Stargardt Disease Type 1 (STGD1)

Interventions

Type	Name	Description
GENETIC	HG005	Once subretinal injection; The duration of the study is about 52 weeks for each subject, including a 4 weeks screening period, enrollment visit, treatment visit, and 56 weeks follow-up period.

Timeline

• Start date: 2025-08-20
• Primary completion: 2027-02-28
• Completion: 2028-02-28
• First posted: 2025-07-14
• Last updated: 2025-08-27

Locations

1 site across 1 country: China