Researchers from the Seoul National University (Korea) have applied for the first an improved genome-editing methodology, named prime editing to correct the genetic defects of two animal models of human disease: a liver disease (hereditary tyrosinemia) and an eye disease (Leber congenital amaurosis). This high-precision genome-editing tool, developed only two years ago by the team of David R. Liu from...
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Editas Medicine CRISPR therapy for CEP290 gene Editas Medicine, a company specialising in the development of gene editing therapies, has announced the recruitment of paediatric patients to the Brilliance trial. This phase 1/2 clinical trial began last year and is based on the CRISPR gene editing methodology to excise the intron mutation c.2991+1655A>G, which produces an aberrant messenger RNAs (see...
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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...
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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...
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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...
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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...
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