Gyrate atrophy is an inherited retinal disease — causing progressive vision loss.

GYROS results will help researchers design clinical trials for an emerging gyrate atrophy gene therapy.

`The Foundation Fighting Blindness, the world’s leading organization committed to finding treatments and cures for inherited retinal diseases and dry age-related macular degeneration, is launching a natural history study for people with gyrate atrophy, a rare, vision-robbing inherited retinal disease. The lead investigators for the study are Mandeep S. Singh, MD, PhD, the Andreas C. Dracopoulos Professor of Ophthalmology and Associate Professor of Ophthalmology and Genetic Medicine at the Wilmer Eye Institute and David Valle, MD, Professor of Genetic Medicine and former director of the McKusick-Nathans Department of Genetic Medicine at Johns Hopkins University.

Drs. Singh and Valle are developing a systemically delivered gene therapy for gyrate atrophy in collaboration with Jefferson Doyle, MD, PhD, MHS, the Dracopoulos- Finkelstein Rising Professor of Ophthalmology and Assistant Professor of Ophthalmology and Genetic Medicine at the Wilmer Eye Institute. The Jaeb Center for Health Research is the study sponsor and coordinating center for this study.

Known as the Gyrate Atrophy Ocular and Systemic Study (GYROS), the $3.5 million study is informing the design of future clinical trials for gyrate atrophy. Several imaging and visual function tests will be performed during the study to better understand how the condition affects the retina and the rate of disease progression. GYROS will help clinical researchers identify outcome measures and participants for clinical trials of emerging therapies. GYROS will follow forty-five (45) participants with gyrate atrophy for four (4) years across twelve (12) clinical research sites from the Foundation’s Clinical Consortium.

GYROS is being funded through a collaborative effort involving three (3) groups. The Foundation is providing $1.8 million in funding for GYROS. The study is also supported by the Food and Drug Administration (FDA) of the U.S. Department of Health and Human Services (HHS) as part of a financial assistance award totaling $1.6 million. Conquering Gyrate Atrophy, a nonprofit research and advocacy organization, is contributing $100,000 to GYROS.

Gyrate atrophy is a progressive retinal disease that causes night blindness and loss of peripheral vision, in addition to severe childhood-onset myopia. The condition, caused by mutations in the ornithine aminotransferase (OAT) gene, is inherited in an autosomal recessive pattern. People with gyrate atrophy are unable to metabolize the amino acid ornithine (produced from its precursor, arginine) and ornithine accumulates in their plasma and tissues. Some individuals with gyrate atrophy follow an arginine-restricted (low-natural protein) diet, prescribed only by a doctor, to reduce arginine intake and slow the progression of retinal degeneration. The diet, however, is highly restrictive and difficult to follow. A gene therapy approach could help to avoid the need for restrictive dietary control and lead to better vision outcomes over the long term.

“We are excited to lead a world-class collaboration that’s enabling the research community to better understand how gyrate atrophy affects the retina and vision in patients,” says Todd Durham, PhD, senior vice president, clinical & outcomes research, at the Foundation Fighting Blindness. “GYROS results will be essential to the design and launch of the planned gene therapy clinical trial, and ultimately, getting a vision-saving treatment out to the people who need it.”

Karabi Acharya, ScD, Founder Conquering Gyrate Atrophy added “This is a huge step towards finding a cure for gyrate atrophy and provides hope to patients and families.”

Additional information about GYROS, including a list of participating sites, is available on clinicaltrials.gov (NCT05312736). The study is open to enrollment.

FDA/HHS Support

The project is supported by the FDA of the U.S. Department of Health and Human Services as part of a financial assistance award totaling $1.6M (46%), as well as an additional $1.9M (54%) funded by non-government source(s). The contents are those of the author(s) and do not necessarily represent the official views of, nor an endorsement by, FDA/HHS, or the U.S. Government.

About the Foundation Fighting Blindness

Established in 1971, the Foundation Fighting Blindness is the world’s leading private funding source for retinal degenerative disease research. The Foundation has raised more than $915 million toward its mission of accelerating research for preventing, treating, and curing blindness caused by the spectrum of blinding retinal diseases including: retinitis pigmentosa, macular degeneration, and Usher syndrome. Visit FightingBlindness.org for more information.

Media Contact:

Chris Adams

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CAdams@FightingBlindness.org

410-423-0585

SOURCE Foundation Fighting Blindness