Pivotal 2 Study of RGX-314 Gene Therapy in Participants With nAMD

Purpose

ABBV-RGX-314 (also known as RGX-314) is being developed as a novel one-time gene therapy for the treatment of neovascular (wet) age-related macular degeneration (wet AMD). Wet AMD is characterized by loss of vision due to new, leaky blood vessel formation in the retina. 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-vascular endothelial growth factor (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 intraocular injections, typically repeated every four to 12 weeks in frequency, to maintain efficacy. Due to the burden of treatment, patients often experience a decline in vision with reduced frequency of treatment over time. ABBV-RGX-314 is being developed as a potential one-time treatment for wet AMD.

Conditions

  • AMD
  • nAMD
  • Wet Age-related Macular Degeneration
  • wAMD
  • WetAMD
  • CNV

Eligibility

Eligible Ages
Between 50 Years and 89 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

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

Exclusion Criteria

  1. CNV or macular edema in the study eye secondary to any causes other than AMD 2. Subfoveal fibrosis or atrophy in the study eye 3. Any condition in the investigator's opinion that could limit VA improvement in the study eye 4. Active or history of retinal detachment, or current retinal tear that cannot be treated, in the study eye 5. Advanced glaucoma or history of secondary glaucoma in the study eye 6. Myocardial infarction, cerebrovascular accident, or transient ischemic attack within the past 6 months. 7. History of intraocular surgery in the study eye within 12 weeks prior to randomization 8. History of intravitreal therapy in the study eye, such as intravitreal steroid injection or investigational product, other than anti-VEGF therapy, in the 6 months prior to Screening Visit 1. 9. Prior treatment with gene therapy.

Study Design

Phase
Phase 3
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Intervention Model Description
2 ABBV-RGX-314 treatment arms, 1 control arm (aflibercept)
Primary Purpose
Treatment
Masking
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Masking Description
ABBV-RGX-314 administration is performed as an outpatient surgical procedure in an operating room, while the active control, aflibercept, is administered via intravitreal injection in an office setting. This study will be partially masked which will include masking of key study assessors and study drug dose.

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
ABBV-RGX-314 Dose 1
ABBV-RGX-314 Dose 1 administered via subretinal delivery one time.
  • Genetic: ABBV-RGX-314 Dose 1
    AAV8 vector containing a transgene for anti-VEGF Fab (Dose 1)
    Other names:
    • RGX-314
Experimental
ABBV-RGX-314 Dose 2
ABBV-RGX-314 Dose 2 administered via subretinal delivery one time.
  • Genetic: ABBV-RGX-314 Dose 2
    AAV8 vector containing a transgene for anti-VEGF Fab (Dose 2)
    Other names:
    • RGX-314
Active Comparator
Control Arm
Aflibercept administered via intravitreal injection approximately every 8 weeks
  • Biological: Aflibercept (EYLEA®)
    2.0 mg (0.05 mL solution) administered by intravitreal injection approximately every 8 weeks after 3 monthly injections Other Names: • Eylea (anti-VEGF agent)
    Other names:
    • Eylea (anti-VEGF agent)

Recruiting Locations

Vanderbilt University Medical Center
Nashville, Tennessee 37232

More Details

Status
Recruiting
Sponsor
AbbVie

Study Contact

Patient Advocacy
+(1) 833-711-0349
Patientadvocacy@regenxbio.com

Detailed Description

This randomized, partially masked, controlled, Phase 3 clinical study will evaluate the efficacy and safety of ABBV-RGX-314 gene therapy in participants with nAMD. The study will evaluate 2 dose levels of RGX-314 gene therapy relative to an active comparator. The primary endpoint of this study is mean change in best-corrected visual acuity (BCVA) of ABBV-RGX-314 relative to aflibercept. Approximately 660 participants who meet the inclusion/exclusion criteria, will be enrolled into one of 3 arms.