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Posts tagged mutations

Twelve People Receive XLRS Gene Therapy in AGTC’s Clinical Trial

Applied Genetics Technology Corporation (AGTC) reported that its gene therapy for X-linked retinoschisis (XLRS) has performed encouragingly in a Phase I/II, safety-oriented clinical trial taking place at seven sites in the U.S.

XLRS is an inherited disease that leads to significant vision loss due to splitting of the layers of the retina. The condition affects about 35,000 males in the U.S. and Europe. XLRS is caused by mutations in the gene retinoschisin. AGTC’s gene therapy uses a human-engineered virus — and adeno-associated virus or AAV — to deliver normal copies of retinoschisin to the patient’s retina.
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Researchers Find Mutation as Frequent Cause of RP in American Hispanics

A Foundation-funded research collaboration identified a mutation in the gene SAG as a frequent cause of autosomal dominant retinitis pigmentosa (adRP) in the American Hispanic population. Eight of the 22 Hispanic families with adRP in their whole-exome-sequencing study had the mutation. The discovery can help genetic experts diagnose more patients with adRP, and it gives researchers a target for developing potential therapies. Results of the SAG study were published in the journal Investigative Ophthalmology and Visual Science (IOVS).
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Clinical Trial Authorized in the U.S. for Emerging LCA 10 Therapy

ProQR, a biotechnology company in the Netherlands, has received authorization from the U.S. Food and Drug Administration to start a Phase I/II clinical trial for its therapy known as QR-110, which is being developed for Leber congenital amaurosis type 10 (LCA 10). The genetic retinal condition causes severe vision loss in children. QR-110 targets the specific mutation p.Cys998X in the CEP290 gene, also known as c.2991+1655A>G mutation. It is estimated that it affects about 2,000 people in the Western world.

QR-110 was a featured topic at the annual meeting of the Association for Research in Vision and Ophthalmology (ARVO) in Baltimore, May 7-11. About 12,000 eye researchers and industry professionals attended the event.
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FFB Funding Helps Retinal Genetics Lab Secure $2 Million Investment

This is a great story of how the Foundation Fighting Blindness (FFB) provided timely funding of $155,000 to help my lab at the University of California, San Diego (UCSD), leverage a $2 million retinal-gene discovery project.

What is very rewarding for me is that FFB’s support helped us find the retinal-disease gene mutation in 33 families, who were otherwise left without a clear diagnosis. Now these families are better able to understand their prognosis and which clinical trials and future therapies may be most relevant to them.
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ID Your IRD: A Free Genetic Testing Program for Eligible People with Inherited Retinal Diseases


Genes are like the blueprint or code for determining who we are. We all have about 23,000 pairs of genes in most cells in our bodies. Many of our physical attributes — such as height, eye and hair color, and complexion — are determined by our genes.

However, certain misspellings, also known as mutations, in our genetic code can cause diseases or increase our risk for them. In fact, inherited retinal diseases are caused by mutations in single genes.
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Genetics 101: How Some Retinal Diseases are Inherited

Egg and spermLong before the advent of genetic testing, or even knowledge of DNA and RNA, astute observers noticed that many traits were passed from one generation to another. But it still can be difficult to understand why some people inherit a genetic disease and others do not. Also, it’s often not clear which family members are at risk of inheriting a condition.
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