Safety and Efficacy of a Unilateral Subretinal Administration of HORA-PDE6B in Patients With Retinitis Pigmentosa Harbouring Mutations in the PDE6B Gene Leading to a Defect in PDE6ß Expression

eyeDNA Therapeutics1 个研究点分布在 1 个国家目标入组 19 人开始时间: 2017年11月6日最近更新: 2025年12月18日

适应症

干预措施

试验速览

阶段: 1 期
状态: 终止
发起方: eyeDNA Therapeutics
入组人数: 19
试验地点: 1
主要终点: Incidence of ocular and non-ocular adverse events

研究概览研究设计入排标准研究组 & 干预措施结局指标研究者研究点记录与标识符相似试验相关资讯

研究概览

简要总结

The study is a Phase I/II, monocentric, open-label, dose-ranging safety and efficacy gene therapy intervention by subretinal administration of AAV2/5-hPDE6B.

At least twelve patients 18 years of age or older, within four consecutive cohorts of patients, will be recruited.

Then at least four patients 13 years of age or older, within a fifth cohort, will be recruited.

详细描述

Retinitis pigmentosa (RP) is a disease where part of the eye (the retina) is degenerating over time. Patients initially present with night blindness, and later in life experience loss of central vision which leads to blindness. RP is a highly variable disorder with some patients developing symptomatic visual loss in childhood whereas others remain asymptomatic until mid-adulthood. There are no treatments available.

This study focuses on the form of RP caused by mutations (modifications) in the genetic information necessary to make the protein called rod cGMP phosphodiesterase 6 β subunit (or PDE6β). Clinical diagnosis is made by function tests of the eye and confirmed using a specific method called molecular testing to verify that the PDE6B gene is not correct.

This study uses a gene therapy vector inspired from an adeno-associated virus (AAV) called AAV2/5-hPDE6B. This vector intends to supply to the target cells the PDE6B therapeutic gene that is not functioning properly in the cell. The AAV parts of the gene therapy vector work as a vehicle to deliver the normal human PDE6B gene into the cells of the retina.

研究设计

研究类型: Interventional
分配方式: Non Randomized
干预模型: Sequential
主要目的: Treatment
盲法: None

入排标准

年龄范围: 13 Years 至 —（Child, Adult, Older Adult）
性别: All
接受健康志愿者: 否

入选标准

•Clinical and molecular diagnosis of retinitis pigmentosa caused by defect in PDE6B gene without other syndromic manifestations
•Aged above 13 years
•Ability to give informed consent

排除标准

•Previous ocular surgery or thermal laser within 6 months before the surgery
•Lens opacities or obscured ocular media upon recruitment such reliable evaluation or grading of the posterior segment cannot be performed
•Known serious allergies to the fluorescein dye used in angiography, to the mydriatic, steroidal and non-steroidal eye drops
•Participation in another clinical trial with an investigational agent
•Enrolled or being enrolled in another gene therapy clinical trial
•Active, extraocular infection requiring the prolonged or chronic use of antimicrobial agents
•Chronic medical conditions, cancer
•Abnormal laboratory values
•On immunosuppressive therapy

研究组 & 干预措施

Cohort 1 - Low Dose

Experimental

Biological: AAV2/5-hPDE6B Unilateral (one eye), subretinal, administration of the lowest dose. Dose-escalation will be performed after DSMC assessment.