NCT04567550Active, not recruitingPhase 2
RGX-314 Gene Therapy Administered in the Suprachoroidal Space for Participants With Diabetic Retinopathy (DR) With and Without Center Involved-Diabetic Macular Edema (CI-DME)
A Phase 2, Randomized, Controlled, Dose-escalation Study to Evaluate the Efficacy, Safety, and Tolerability of RGX-314 Gene Therapy Delivered Via a Single Suprachoroidal Space (SCS) Injections in Participants With Diabetic Retinopathy (DR) With and Without Center Involved-Diabetic Macular Edema (CI-DME)(ALTITUDE)
Source: ClinicalTrials.gov · Last updated 19 Aug 2026
Brief summary (registry, in English)
ABBV-RGX-314 is being developed as a novel, potential one-time gene therapy treatment for the treatment of Diabetic Retinopathy (DR) with and without Center-Involved Diabetic Macular Edema (CI-DME). DR is a chronic and progressive complication of diabetes mellitus. It is a sight-threatening disease characterized in the early stages by neuronal and vascular dysfunction in the retina, and later by neovascularization that leads to further deterioration of functional vision. Despite the availability of current treatments, diabetic retinopathy remains the leading cause of vision loss in working-age adults, those between the ages of 20 and 74. Existing treatment with anti-VEGF agents, although shown to be effective, are limited by short therapeutic half-lives, which then require frequent intravitreal injections over the patient's lifetime, resulting in increased risk of associated adverse events and significant treatment burden. Due to the burden of treatment, patients often do not closely adhere to treatment regimens and experience sub-optimal outcomes and a decline in vision.
- Status (registry)
- Active, not recruiting
- Phase (registry)
- Phase 2
- Study type
- Interventional
- Enrollment
- 139 (actual)
- First submitted
- 15 Sept 2020
- Start date
- 20 Nov 2020
- Primary completion date
- 18 Jun 2026
- Lead sponsor
- AbbVie
- Diseases
- Diabetic eye disease
- NCT number
- NCT04567550
What you commit to
- Study type: Interventional · Phase 2
- Participants enrolled: 139
- From 20 Nov 2020 to the primary completion date, 18 Jun 2026
- 25 sites in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Patients who had a prior vitrectomy surgery.
- Patients who had a prior vitrectomy surgery.
Other illness
- Active or history of retinal detachment in the study eye.
- Any evidence or documented history of PRP or retinal laser in the study eye.
- Active or history of retinal detachment in the study eye.
- Any evidence or documented history of PRP or retinal laser in the study eye.
Other
- Neovascularization in the study eye from a cause other than DR.
- Presence of any active CI-DME.
- Women of childbearing potential.
- Part 2 (DR with CI-DME):
- Neovascularization in the study eye from a cause other than DR.
- Women of childbearing potential.
- Note: Other inclusions/exclusions criteria apply.
Who the study is looking for
- Patients 25-89 years of age with a diabetic retinopathy (DR) diagnosis of nonproliferative diabetic retinopathy (NPDR) and proliferative diabetic retinopathy (PDR) secondary to diabetes mellitus Type 1 or 2 for which PRP or anti-VEGF injections can be safely deferred for at least 6 months
- HbA1c \< 12%.
- Best corrected visual acuity (BCVA) Early Treatment Diabetic Retinopathy Study (ETDRS) letter score in the study eye of ≥69 letters (approximate Snellen equivalent of 20/40 or better).
- Prior history of CI-DME in the study eye is acceptable.
- Must be willing and able to provide written, signed informed consent.
- Patients 25-89 years of age with diabetic retinopathy secondary to diabetes mellitus Type 1 or 2.
- HbA1c \< 12%
- Macular thickening secondary to DME involving the center of the fovea, CST on SD-OCT (≥ 325 μm)
- Best corrected visual acuity (BCVA) Early Treatment Diabetic Retinopathy Study (ETDRS) letter score in the study eye of 78-25 letters (approximate Snellen equivalent of 20/32 to 20/320)
- Participants must have demonstrated a meaningful response to anti-VEGF therapy.
- Must be willing and able to provide written, signed informed consent
Criteria the registry did not label
- Part 1 (DR without CI-DME):
Age in the registry: 25 years to 89 years · Sex: All · Does not accept healthy volunteers
Sites (25)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Retina Research Institute of Texas, LLC Coordinator of this site? Confirm its status | Abilene | United States | Unknown status |
| Vision Research Center Eye Associates of New Mexico Coordinator of this site? Confirm its status | Albuquerque | United States | Unknown status |
| Southeast Retina Center, PC Coordinator of this site? Confirm its status | Augusta | United States | Unknown status |
| Austin Clinical Research, LLC Coordinator of this site? Confirm its status | Austin | United States | Unknown status |
| California Retina Consultants Coordinator of this site? Confirm its status | Bakersfield | United States | Unknown status |
| Wilmer Eye Institute/Johns Hopkins University School of Medicine Coordinator of this site? Confirm its status | Baltimore | United States | Unknown status |
| Retina-Vitreous Associates Medical Group Coordinator of this site? Confirm its status | Beverly Hills | United States | Unknown status |
| Ophthalmic Consultants of Boston Coordinator of this site? Confirm its status | Boston | United States | Unknown status |
| Star Retina Coordinator of this site? Confirm its status | Burleson | United States | Unknown status |
| Retinal Diagnostic Center Coordinator of this site? Confirm its status | Campbell | United States | Unknown status |
| Duke University Eye Center Coordinator of this site? Confirm its status | Durham | United States | Unknown status |
| Charles Retina Institute, P.C Coordinator of this site? Confirm its status | Germantown | United States | Unknown status |
| Cumberland Valley Retina Consultants Coordinator of this site? Confirm its status | Hagerstown | United States | Unknown status |
| Northern California Retina Vitreous Associates Medical Group INC. Coordinator of this site? Confirm its status | Mountain View | United States | Unknown status |
| University Retina and Macula Associates, PC Coordinator of this site? Confirm its status | Oak Forest | United States | Unknown status |
| California Eye Specialists Medical Group, Inc. Coordinator of this site? Confirm its status | Pasadena | United States | Unknown status |
| Mid Atlantic Retina Coordinator of this site? Confirm its status | Philadelphia | United States | Unknown status |
| Barnet Dulaney Perkins Eye Center Coordinator of this site? Confirm its status | Phoenix | United States | Unknown status |
| Retinal Research Institute, LLC Coordinator of this site? Confirm its status | Phoenix | United States | Unknown status |
| Retinal Consultants San Diego Coordinator of this site? Confirm its status | Poway | United States | Unknown status |
| Sierra Eye Associates Coordinator of this site? Confirm its status | Reno | United States | Unknown status |
| California Retina Consultants Coordinator of this site? Confirm its status | Santa Barbara | United States | Unknown status |
| Springfield Clinic Coordinator of this site? Confirm its status | Springfield | United States | Unknown status |
| NJ Retina Coordinator of this site? Confirm its status | Teaneck | United States | Unknown status |
| Retinal Consultants of Texas Coordinator of this site? Confirm its status | The Woodlands | United States | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.