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Promising results for a first-in-class Usher syndrome IIA therapy

13/04/21 - Retinitis pigmentosa, Usher syndrome, Therapy,

The Dutch biotechnology company ProQR has just presented (March 2021) the first results of a clinical trial, named Stellar, with QR-421a, an antisense oligonucleotide designed to stop vision loss or restore vision in Usher syndrome IIA and non-syndromic retinitis pigmentosa patients due to USH2A exon 13 mutations. The therapeutical approach aims to exclude the exon 13 coding region in the...

Direct reprogramming of skin cells into photoreceptors in mice

27/05/20 - Research, Therapy, Cell Therapy,

The end result of many retinal dystrophies is photoreceptor cell death and the irreversible loss of vision. To prevent the progressive loss of retinal neurons, and to slow down or reverse the progression of the disease, gene therapies are currently under study to correct or replace the altered genes responsible for different retinopathies. Another therapeutic strategy that is under intensive...

A revolutionary CRISPR gene editing technique applied for the first time to a patient with a visual disorder

16/03/20 - Leber Congenital Amaurosis, Gene editing, Therapy, Gene Therapy,

The patient, treated at the Casey Eye Institute in Portland, Oregon, belongs to a group of 18 people affected with Leber congenital amaurosis. These patients will participate in the BRILLIANCE study, the first clinical trial to determine the safety and efficacy of a therapy based on the CRISPR-Cas9 gene editing technique (AGN-151587, EDIT-101). It is the first example of an...

First gene therapy application of Luxturna in the UK

26/02/20 - Leber Congenital Amaurosis, Retinal Dystrophy, Therapy, Gene Therapy,

This February Moorfields Eye Hospital in London and Radcliffe Hospital in Oxford have started treating patients affected by Leber congenital amaurosis (LCA) with the Luxturna gene therapy. LCA is a childhood-onset severe retinal dystrophy, which causes irreversible blindness for which, until now, no treatment was available. Luxturna (voretigene neparvovec) is also the first gene therapy approved for the treatment of an...

Researchers develop a new non-invasive route to deliver gene therapy to the retina

25/10/19 - Macular degeneration, Therapy, Gene Therapy,

Researchers at the Johns Hopkins University have tested an alternative route to deliver gene therapy vectors to the retina that could potentially help patients with age-related macular degeneration (AMD) and inherited retinal disorders (IRDs). The new route of administration, called suprachoroidal injection, has been investigated initially in preclinical experiments in animals and uses a microneedle to inject gene-carrying therapeutic viruses...

First patient treated in ProQR STELLAR phase 1/2 gene therapy clinical trial for Usher Syndrome Type II

13/03/19 - Retinal Dystrophy, Research, Usher syndrome, Therapy, Gene Therapy,

Usher syndrome is a genetic disorder that presents recessive inheritance and is characterized by hearing loss and retinitis pigmentosa, traits that may be total or partial. The prevalence of this disease is 1: 30,000 individuals considering the three types of USHER identified, the most common being type II (60% of cases), caused mostly by the USH2A gene. There was no...