Can a One-Time gene therapy offer lasting protection for diabetic retinopathy?
NCT ID NCT05296447
First seen Aug 05, 2026 · Last updated Aug 06, 2026 · Updated 1 time
Summary
This study is a long-term follow-up for people who previously received an injection of RGX-314, a gene therapy, for diabetic retinopathy (with or without diabetic macular edema). The purpose is to monitor the safety and effectiveness of the treatment over a total of five years after the injection. Participants will be observed for any eye-related or other side effects, and the study will track changes in the severity of diabetic retinopathy. The goal is to see if this one-time treatment can provide lasting benefit and reduce the need for ongoing eye injections.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- RGX-314, a gene therapy injected into the suprachoroidal space of the eye
- What this could lead to
- If successful, this could lead to a long-lasting, one-time treatment for diabetic retinopathy, potentially reducing the need for frequent eye injections.
- What could go wrong
- This is a Phase 2 follow-up study, so the treatment is still experimental. Long-term safety and effectiveness are not yet established, and there may be unknown risks or side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2022
- Expected to finish
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Jun 2031
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Must provide written, signed informed consent for this study * Must have been enrolled in a previous clinical study of ABBV-RGX-314 for the treatment of DR with or without CI-DME and must have received an SCS injection of ABBV-RGX-314 in that study * Must be willing and able to comply with all study procedures Exclusion Criteria: * None
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
20 sites. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Austin Clinical Research
Austin, Texas, 78750, United States
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California Eye Specialists Medical Group, Inc
Pasadena, California, 91107, United States
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California Retina Consultants
Bakersfield, California, 93309, United States
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California Retina Consultants CRC
Santa Barbara, California, 93103, United States
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Charles Retina Institute, P.C
Germantown, Tennessee, 38138, United States
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Cumberland Valley Retina Consultants
Hagerstown, Maryland, 21740, United States
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Duke University
Durham, North Carolina, 27705, United States
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Mid Atlantic Retina
Philadelphia, Pennsylvania, 19107, United States
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New Jersey Retina
Teaneck, New Jersey, 07666, United States
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Northern California Retina Vitreous Associates Medical Group Inc
Mountain View, California, 94040, United States
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Ophthalmic Consultants of Boston
Boston, Massachusetts, 02114, United States
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Retina Consultants San Diego
Poway, California, 92064, United States
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Retina Consultants of Texas
The Woodlands, Texas, 77384, United States
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Retina-Vitreous Associates Medical Group
Beverly Hills, California, 90211, United States
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Retinal Diagnostic Center
Los Angeles, California, 90017, United States
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Retinal Research Institute, LLC
Phoenix, Arizona, 85014, United States
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Sierra eye Associates
Reno, Nevada, 89502, United States
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Southeast Retina Center, PC
Augusta, Georgia, 30909, United States
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University Retina and Macula Associates, PC
Oak Forest, Illinois, 60452, United States
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Vision Research Center Eye Associates of New Mexico
Albuquerque, New Mexico, 87109, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Could the speed of blood sugar drop harm the eyes? a study puts it to the test.
- AI eye doctor: could a computer spot Blindness-Causing diseases faster than humans?
- Could a common supplement protect eyes in diabetes?
- Eye scan showdown: faricimab vs ranibizumab in diabetic retinopathy
- New eye injection shows promise for diabetic retinopathy