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CompletedNCT04832724Updated Sep 5, 2024

RGX-314 Gene Therapy Pharmacodynamic Study for Neovascular Age-related Macular Degeneration (nAMD)

A Phase 2 interventional study of RGX-314 in Neovascular Age-related Macular Degeneration, Wet Macular Degeneration and Wet Age-related Macular Degeneration, sponsored by AbbVie. Completed at 13 sites in United States. Open to participants aged 50 Years to 89 Years. Per ClinicalTrials.gov, last updated 2024-09-05.

Sponsored by AbbVie · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Oct 2023, 3 years ago, and no results have been posted to the registry; the sponsor requested a delay in submitting them in Sep 2024.
Phase
Phase 2
Study type
Interventional
Enrollment
60
Allocation
Non-randomized
Ages
50 Years to 89 Years
Sex
All
01

Study summary

RGX-314 is being developed as a novel one-time gene therapy for the treatment of neovascular (wet) age-related macular degeneration (nAMD) also referred to as Wet AMD. Wet AMD is characterized by loss of vision due to new, leaky blood vessel formation in the retina. The purpose of this phase 2, open label study is to evaluate whether different doses of RGX-314 from two different formulations (clinical versus eventual commercial formulation) perform the same in humans when delivered by subretinal administration

Read the detailed description

Wet AMD is a significant cause of vision loss in the United States, Europe and Japan, with up to 2 million people living with wet AMD in these geographies alone. Current anti-VEGF therapies have significantly changed the landscape for treatment of wet AMD, becoming the standard of care due to their ability to prevent progression of vision loss in the majority of patients. These therapies, however, require life-long repeated intraocular injections to maintain efficacy. Due to the burden of treatment, patients often experience a decline in vision with reduced frequency of treatment over time. RGX-314 is being developed as a potential one-time treatment for wet AMD. RGX-314 uses an AAV8 vector that contains a gene that encodes for a monoclonal antibody fragment which binds to and neutralizes VEGF activity. This phase 2, open label study will explore the pharmacodynamics of two doses in two formulations of RGX-314 gene therapy via subretinal delivery in patients with neovascular Age-related Macular Degeneration. Approximately 60 patients (15 per cohort) who meet the inclusion/exclusion criteria will be enrolled in 4 sequential dose cohorts. A dose cohort will be comprised of 1 of 2 doses of RGX-314 in 1 of 2 formulations in order to explore the pharmacodynamics of RGX-314 based on aqueous humor transgene product (TP) concentrations. If the participants meet the study criteria and choose to participate in the study, their participation in the study will last about 12 months.

02

Conditions studied

  • Neovascular Age-related Macular Degeneration
  • Wet Macular Degeneration
  • Wet Age-related Macular Degeneration

Keywords

  • AMD
  • wet AMD
  • wAMD
  • neovascular AMD
  • nAMD
  • gene therapy
03

In context

Macular Degeneration

1,474 studies on the registry are indexed under Macular Degeneration; 206 are open to participants now.

This study's enrollment of 60 is above the median of 51 across 985 interventional studies indexed under Macular Degeneration.

Browse Macular Degeneration studies →

Lead sponsor

AbbVie is the lead sponsor of 953 studies on the registry; 136 are open to participants now.

Of its 350 completed or terminated interventional studies of FDA-regulated products, 210 (60%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
50 Years to 89 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Males or females, aged ≥ 50 years and ≤ 89 years.
  2. An Early Treatment Diabetic Retinopathy Study (ETDRS) BCVA-letter score between ≤ 78 and ≥ 40 in the study eye at Screening.
  3. Diagnosis of choroidal neovascularization (CNV) secondary to age-related macular degeneration in the study eye previously treated with anti-VEGF.
  4. Participants must have demonstrated a meaningful response to anti-VEGF therapy at study entry.
  5. Willing and able to provide written, signed informed consent for this study.
  6. Must be pseudophakic (at least 12 weeks postcataract surgery) in the study eye.

Exclusion criteria

Exclusion Criteria:

  1. CNV or macular edema in the study eye secondary to any causes other than AMD.
  2. Subfoveal fibrosis or atrophy in study eye.
  3. Any condition in the investigator's opinion that could limit visual acuity improvement in the study eye.
  4. Active or history of retinal detachment or retinal tear in the study eye.
  5. Advanced glaucoma in the study eye.
  6. Prior treatment with gene therapy.
  7. Myocardial infarction, cerebrovascular accident, or transient ischemic attack within the past 6 months.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
60 participants (actual)

Study arms

  • Experimental
    Commercial Formulation Dose 1

    Dose 1 of RGX-314

    Genetic: RGX-314

  • Experimental
    Clinical Formulation Dose 1

    Dose 1 of RGX-314

    Genetic: RGX-314

  • Experimental
    Commercial Formulation Dose 2

    Dose 2 of RGX-314

    Genetic: RGX-314

  • Experimental
    Clinical Formulation Dose 2

    Dose 2 of RGX-314

    Genetic: RGX-314

Interventions

  • GeneticRGX-314

    RGX-314 is a recombinant adeno-associated virus gene therapy vector carrying a coding sequence for a soluble anti-VEGF protein

06

What researchers measure

Primary outcomes

  1. RGX-314 target protein concentration in aqueous humor

    Time frame: At Week 24

Secondary outcomes

  1. Incidence and severity of ocular Adverse Events (AEs) and overall AEs

    Evaluate the safety and tolerability of RGX-314

    Time frame: Through Week 48

  2. Changes in Best Corrected Visual Acuity (BCVA)

    BCVA measured by Early Treatment Diabetic Retinopathy Study (ETDRS)

    Time frame: At Week 24 and 48

  3. Changes in Central Retinal Thickness (CRT)

    CRT is measured by spectral domain optical coherence tomography (SD-OCT)

    Time frame: At Week 24 and 48

  4. Mean Supplemental anti-VEGF injection annualized rate through week 24 and week 48

    To assess the need for supplemental anti-VEGF therapy over 48 weeks

    Time frame: Through Week 24 and week 48

07

Study locations

13 sites
  • Retinal Consultants of Arizona
    Phoenix, Arizona 85014, United States
  • Barnet Dulaney Perkins Eye Center
    Sun City, Arizona 85351, United States
  • Retina Consultants of San Diego
    San Diego, California 92064, United States
  • California Retina Consultants
    Santa Barbara, California 93103, United States
  • Retina Vitreous Associates of Florida
    Saint Petersburg, Florida 33711, United States
  • Wilmer Eye Institute
    Baltimore, Maryland 21287, United States
  • Ophthalmic Consultants of Boston
    Boston, Massachusetts 02114, United States
  • Sierra Eye Associates
    Reno, Nevada 89502, United States
  • Eye Associates of New Mexico
    Albuquerque, New Mexico 87109, United States
  • Wills Eye Hospital
    Philadelphia, Pennsylvania 19107, United States
  • Charles Retina Institute
    Germantown, Tennessee 38138, United States
  • Texas Retina Associates
    Dallas, Texas 75231, United States
  • Retina Consultants of Texas
    The Woodlands, Texas 77384, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 5, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04832724
Lead sponsor
AbbVie
Responsible party
Sponsor
First posted
Apr 6, 2021
Start date
Feb 22, 2021
Primary completion
Oct 2, 2023
Completion
Mar 18, 2024
Last update
Sep 5, 2024

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Sep 2024. You cannot join it, but the record below documents what was studied.

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