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Ben

The following articles were authored by Ben

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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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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jCyte Stem-Cell Therapy Moves into Phase IIb Clinical Trial for RP

These are retinal progenitors.

These are retinal progenitors.

The stem-cell therapy company jCyte is launching a Phase IIb clinical trial of its therapy for people with retinitis pigmentosa (RP). The trial is taking place at University of California, Irvine, and Retina-Vitreous Associates Medical Group in Los Angeles. The 70-participant study is being led by Henry Klassen, MD, PhD. Participant enrollment is scheduled to begin this month.

The treatment involves intravitreal injection of retinal progenitor cells (RPCs), which are stem cells that have partially developed into the retinal cells that make vision possible. Based on lab studies, researchers believe the treatment can preserve and potentially rescue the patient’s existing photoreceptors, thereby saving and possibly restoring vision.
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Dr. Eliot Berson, Pioneer in Vitamin A Therapy for Retinitis Pigmentosa, Passes Away

No one in the retinal disease research community brought more passion and commitment to his or her work than Dr. Eliot Berson. As The William F. Chatlos Professor of Ophthalmology at Harvard Medical School, he dedicated himself to clinical care and vision-saving research for people with inherited retinal diseases for five decades. In addition to being a world-renowned clinical researcher and developer of vitamin A therapy for retinitis pigmentosa, he was beloved by his patients and their families for his hopeful and encouraging attitude toward their challenging, vision-robbing conditions.
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First Patient Treated in XLRP Gene Therapy Clinical Trial

The surgical team prepares to inject the virus into the back of the eye of the patient A 29-year-old British man is the first person to be treated in a gene therapy clinical trial for X-linked retinitis pigmentosa (XLRP). Robert MacLaren, MD, the lead investigator for the trial taking place at the Oxford Eye Hospital in the United Kingdom, says the patient is doing well and has gone home. The trial is being run by Nightstar, a biopharmaceutical company in the U.K. developing therapies for inherited retinal diseases. As many as 24 patients will be enrolled in the 12-month trial.

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Unregulated Stem-Cell Therapy Causes Severe Vision Loss for Three Florida Women

A report today in The New England Journal of Medicine (NEJM) describes the cases of three women with age-related macular degeneration (AMD) who lost much of their eyesight after receiving ocular injections of stem cells derived from their own fat tissue. All of the women had good enough eyesight to drive before the procedures. Each paid $5,000 to receive the injections from a private clinic in Sunrise, Florida. The New York Times and other major media outlets have published news stories on the NEJM report.
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FFB Convenes Experts to Discuss Therapeutic Opportunities for Stargardt Disease

Meeting presenters (left to right): Philip Rosenfeld, MD, PhD; Ilyas Washington, PhD; Peter Charbel Issa, MD, PhD; Elias Traboulsi, MD, MEd; Ulrich Schraermeyer, PhD; Carel Hoyng, PhD; Paul Bernstein, MD, PhD; SriniVas Sadda, MD; Krzysztof Palczewski, PhD; Janet Sparrow, PhD; Artur Cideciyan, PhD; Hendrik Scholl, MD; Patricia Zilliox, PhD (not pictured)

Meeting presenters (left to right): Philip Rosenfeld, MD, PhD; Ilyas Washington, PhD; Peter Charbel Issa, MD, PhD; Elias Traboulsi, MD, MEd; Ulrich Schraermeyer, PhD; Carel Hoyng, PhD; Paul Bernstein, MD, PhD; SriniVas Sadda, MD; Krzysztof Palczewski, PhD; Janet Sparrow, PhD; Artur Cideciyan, PhD; Hendrik Scholl, MD; Patricia Zilliox, PhD (not pictured)

Stargardt disease is the world’s leading cause of inherited macular degeneration, affecting 30,000 people in the United States alone. It is also a challenging condition to understand and treat. While Stargardt disease often causes severe loss of central eyesight, its effect on vision and the retina can vary widely from patient to patient. The disease usually strikes in childhood or adolescence, but there are forms that cause significant vision loss much later in life. Also, a patient’s vision can remain stable for many years before a relatively sudden, steep decline occurs.

The Foundation Fighting Blindness Clinical Research Institute (FFB-CRI) convened 70 of the world’s top Stargardt disease research experts in Cleveland, Ohio, on February 17, 2017, to discuss these challenges and the current state of therapy development. Much of the information and data shared during the meeting came out of ProgSTAR, the FFB-CRI-funded natural history study of 365 Stargardt disease patients.
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AGTC Leverages Funding from the Foundation to Move Promising Treatments into Clinical Trials

Seed becoming a plantCompany Builds on FFB’s Initial Investment to Garner $265 Million in Therapy Development Funding

In the early 1990s, scientists began discovering the genetic defects causing blinding, inherited retinal diseases and saw a unique opportunity to overcome them. They envisioned gene therapy — delivering healthy genes to the retina to replace the bad ones — as an elegant approach to saving and restoring vision. Furthermore, a single injection of gene therapy would likely halt or reverse the disease process and work effectively for several years, perhaps the patients’ lifetimes.

The Foundation Fighting Blindness, the world’s leading private, nonprofit retinal research organization, funded most of these genetic discoveries for retinal diseases and immediately recognized the enormous opportunity for gene therapy to beat blindness.
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FFB-CRI Leads Effort to Identify Outcome Measures for Therapies in Clinical Trials

Side view of a retina as captured by SD-OCT. The EZ Width is the yellow line extending between the arrows. The patient has advanced RP with significant loss of peripheral vision.

A key to gaining regulatory approval for an emerging retinal-disease therapy is quickly and accurately demonstrating that it saves or restores vision in a clinical trial. Though the goal sounds simple enough, proving that a potential treatment is working is actually difficult. That’s because commonly used measures of visual function — including visual acuity and visual fields — are not always reliable for evaluating vision changes in many people with inherited retinal conditions.

For example, visual acuity can remain stable for someone with retinitis pigmentosa (RP) for decades. While visual fields for people with RP contract over time, measuring the changes objectively is challenging; results for a given patient can vary significantly, even for the same patient on the same day.
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A Change in Identity Might Someday Save Vision

retina

No, people with inherited retinal diseases don’t have to adopt new names or personas, or go into witness protection programs, to save their vision. But by changing the identity of cells in the retina — namely rods — researchers may someday be able to slow or halt vision loss for those with retinitis pigmentosa (RP) and other related conditions.

While the innovative therapeutic approach is not ready to be tested in humans, a research team led by Tom Reh, PhD, University of Washington, and Sheng Ding, PhD, University of California, San Francisco, accomplished the feat in mice with RP. The investigators treated rods in the mice with a compound known as photoregulin1 (PR1) that blocked a gene involved in rod development called Nr2e3. That, in turn, reduced the expression (activity) of other rod-associated genes, making the rods less rod-like and more like cones. Doing so stopped retinal degeneration, preserving both rods and cones. Rods and cones are important, because they’re the cells that make vision possible. Results of the PR1 study were published online in the journal Investigative Ophthalmology & Visual Science.

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