Clinical trial Recruiting at 220 sites Phase 3 Interventional Ages 50 to 85

Investigating a new treatment for geographic atrophy in age-related macular degeneration

Official title: A Multicenter, Randomized, Double-Masked, Placebo-Controlled Phase 3 Study of the Efficacy, Safety, and Tolerability of Subcutaneously Administered Pozelimab in Combination With Cemdisiran or Cemdisiran Alone in Participants With Geographic Atrophy Secondary to Age-Related Macular Degeneration

Run by Regeneron Pharmaceuticals · NCT06541704 · Data updated 2026-11-12

This study is testing a new treatment using two drugs to see if they can slow down the worsening of geographic atrophy in adults with age-related macular degeneration.

More Age-Related Macular Degeneration (AMD) trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages50 Years to 85 Years
SexAll
Enrollment975 (estimated)
SponsorRegeneron Pharmaceuticals
Industry-sponsored
Drugs / interventionsprednisone, pozelimab
Locations233 sites (Chandler, Arizona and 232 other locations)
StatusRecruiting
StartedOctober 30, 2024
Main results expectedJuly 31, 2028
Study endsApril 9, 2033
Registry record updatedNovember 5, 2026
Trial IDNCT06541704 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults diagnosed with geographic atrophy secondary to age-related macular degeneration, with specific visual acuity and GA area criteria.

Probably not a fit

Patients with geographic atrophy caused by conditions other than AMD or those with macular neovascularization may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates the effects of pozelimab and cemdisiran, either alone or in combination, on the progression of geographic atrophy (GA) in adults with age-related macular degeneration (AMD). Participants will receive either the study drugs or a placebo, and the study will monitor the progression of GA, side effects, drug levels in the blood, and the body's immune response to the drugs. The goal is to determine the efficacy and safety of these treatments in slowing down GA progression.

Why it matters

Potential benefit: If successful, this study could provide a new treatment option that slows the progression of geographic atrophy in patients with AMD.

How similar studies have gone: Other studies have explored treatments for geographic atrophy, but the specific combination of pozelimab and cemdisiran is a novel approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

1. Study eye with diagnosis of GA of the macula secondary to AMD as described in the protocol
2. Total GA area in the study eye measuring between ≥2.5 mm\^2 and ≤17.5 mm\^2 as described in the protocol
3. BCVA of 55 letters or better using ETDRS charts (20/80 Snellen equivalent) in the study eye as described in the protocol
4. Sufficiently clear ocular media, adequate pupillary dilation and fixation to permit quality fundus imaging in the study eye as described in the protocol
5. Willing and able to comply with clinic visits and study-related procedures, including completion of the full series of meningococcal vaccinations and pneumococcal vaccination required per protocol

Key Exclusion Criteria:

1. GA in either eye due to causes other than AMD, such as Stargardt disease, cone rod dystrophy or toxic maculopathies like hydroxychloroquine maculopathy
2. History or current evidence of Macular Neovascularization (MNV) and/or exudation or Peripapillary Choroidal Neovascularization (PPCNV) in either eye as described in the protocol
3. Prior or current Intravitreal (IVT) treatment of any kind for any indication in study eye or fellow eye, except approved or investigational IVT complement inhibitor therapy or anti-VEGF therapy, as long as last dose was ≥6 months prior to randomization
4. Prior intraocular surgery except cataract extraction or minimally invasive glaucoma surgery in study eye as long as date of these procedures was ≥3 months prior to randomization
5. Comorbid progressive ocular condition (eg, diabetic retinopathy, macular edema, uncontrolled glaucoma, full thickness macular hole) in study eye that could affect central vision and confound study
6. Any ophthalmologic condition that reduces the clarity of the media and that, in the opinion of the investigator interferes with ophthalmologic examination of the study eye (e.g., advanced cataract or corneal abnormalities) as described in the protocol

   Systemic Exclusion criteria
7. History or current use of systemic complement inhibitor therapy within 6 months prior to randomization as described in the protocol
8. History of solid organ or bone marrow transplantation
9. Use of chronic (\>14 days) systemic corticosteroids (oral or parenteral, ≥20 mg oral prednisone or equivalent) within the previous 30 days prior to the first screening visit as described in the protocol
10. Current or prior use of systemic immunosuppressive therapy other than corticosteroids within 12 months prior to randomization or the likelihood of treatment with any such agent during the study inclusive of the screening period as described in the protocol
11. Not meeting meningococcal or pneumococcal vaccination requirements as described in the protocol
12. Carrier of Neisseria meningitidis based on culture collected during screening
13. Has a hemoglobin A1C ≥ 8.0% during screening as described in the protocol

NOTE: Other protocol-defined Inclusion/ Exclusion Criteria apply

Where it's running

  • Barnet Dulaney Perkins Eye Center-Ophthamalogy
    Chandler, Arizona, United States
    Recruiting
  • Barnet Dulaney Perkins Eye Center
    Phoenix, Arizona, United States
    Recruiting
  • Associated Retina Consultants
    Phoenix, Arizona, United States
    Recruiting
  • Retinal Research Institute
    Phoenix, Arizona, United States
    Recruiting
  • Retina Macula Institute of Arizona
    Scottsdale, Arizona, United States
    Recruiting
  • Retina Associates of Tuscan
    Tucson, Arizona, United States
    Recruiting
Show 44 more locations
  • Retina Partners of Northwest Arkansas, PLLC
    Springdale, Arkansas, United States
    Recruiting
  • Retina Vitreous Associates Medical Group
    Beverly Hills, California, United States
    Recruiting
  • Retina Specialists of Beverly Hills- Department of Ophthalmology
    Beverly Hills, California, United States
    Recruiting
  • Eye Medical Center of Fresno
    Fresno, California, United States
    Recruiting
  • Salehi Retina Institute dba Retina Associates of Southern California
    Huntington Beach, California, United States
    Recruiting
  • University of California Irvine
    Irvine, California, United States
    Recruiting
  • University of California San Diego, Jacobs Retina Center
    La Jolla, California, United States
    Recruiting
  • South Coast Retina Center
    Long Beach, California, United States
    Recruiting
  • Kaiser Permanente Los Angeles Medical Center
    Los Angeles, California, United States
    Recruiting
  • Jules Stein Eye Institute in David Geffen School of Medicine at UCLA
    Los Angeles, California, United States
    Recruiting
  • Retinal Consultants Medical Group Inc Modesto
    Modesto, California, United States
    Recruiting
  • Northern California Retina Vitreous Associates Medical Group, Inc.
    Mountain View, California, United States
    Recruiting
  • California Retina Consultants
    Oxnard, California, United States
    Recruiting
  • California Eye Specialists Medical Group Inc.
    Pasadena, California, United States
    Recruiting
  • Retina Consultants San Diego
    Poway, California, United States
    Recruiting
  • California Eye Specialists Medical Group, Inc.
    Redlands, California, United States
    Recruiting
  • Kaiser Permanente Riverside Medical Center
    Riverside, California, United States
    Recruiting
  • Optic Eye Care
    Rowland Heights, California, United States
    Recruiting
  • UC Davis Health Eye Center
    Sacramento, California, United States
    Recruiting
  • Vrmg Inc
    Sacramento, California, United States
    Recruiting
  • Retinal Consultants Medical Group (RCMG) - Greenback Lane Retina Center
    Sacramento, California, United States
    Recruiting
  • West Coast Retina Medical Group, Inc.
    San Francisco, California, United States
    Recruiting
  • Orange County Retina Medical Group
    Santa Ana, California, United States
    Recruiting
  • Macula Retina Vitreous Research Institute
    Torrance, California, United States
    Recruiting
  • University of Colorado
    Aurora, Colorado, United States
    Recruiting
  • Retina Consultants of Southern Colorado
    Colorado Springs, Colorado, United States
    Recruiting
  • Retina Specialists of Colorado - Denver
    Denver, Colorado, United States
    Recruiting
  • Southwest Retina Research Center
    Durango, Colorado, United States
    Recruiting
  • Colorado Retina - Lakewood
    Lakewood, Colorado, United States
    Recruiting
  • Eye care Center of Northern Colorado doing business as Advanced Vision Research Institute
    Longmont, Colorado, United States
    Recruiting
  • Retina Consultants - Manchester
    Manchester, Connecticut, United States
    Recruiting
  • Advanced Retina Institute-Ophthalmology
    Bonita Springs, Florida, United States
    Recruiting
  • Advanced Research
    Coral Springs, Florida, United States
    Recruiting
  • Retina Group of Florida
    Fort Lauderdale, Florida, United States
    Recruiting
  • ClearVista Clinical Research, Retina Center Tampa Bay
    Hudson, Florida, United States
    Recruiting
  • Florida Retina Institute, Jacksonville Perimeter Park- Ophthalmology
    Jacksonville, Florida, United States
    Recruiting
  • Florida Retina Consultants
    Lakeland, Florida, United States
    Recruiting
  • Bascom Palmer Eye Institute
    Naples, Florida, United States
    Recruiting
  • Florida Retina Institute - Orlando
    Orlando, Florida, United States
    Recruiting
  • Retina Care Specialists
    Palm Beach Gardens, Florida, United States
    Recruiting
  • Eye Associates of Pinellas
    Pinellas Park, Florida, United States
    Recruiting
  • Retina Group of Florida, RAS-Sarasota Retina Center-Ophthalmology
    Sarasota, Florida, United States
    Recruiting
  • Retina Vitreous Associates of Florida Saint Petersburg
    St. Petersburg, Florida, United States
    Recruiting
  • University of South Florida Ophthalmology
    Tampa, Florida, United States
    Recruiting

+183 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.