Comparing tiespectus (MK-8748) with aflibercept for wet age-related macular degeneration
Official title: A Randomized Double-masked, Multicenter, 3-arm, Pivotal Phase 2/3 Study to Evaluate the Efficacy and Safety of Intravitreal (IVT) EYE201/MK-8748 Compared to Aflibercept (2 mg) in Participants With Neovascular Age-related Macular Degeneration (NVAMD)
Run by EyeBiotech Ltd. · NCT07440225 · Data updated 2026-11-12
This study will test whether tiespectus (MK-8748) works as well as aflibercept for people with newly diagnosed neovascular (wet) age-related macular degeneration.
Quick facts
| Phase | Phase2; Phase3 |
|---|---|
| Study type | Interventional |
| Ages | 50 Years and up |
| Sex | All |
| Enrollment | 960 (estimated) |
| Sponsor | EyeBiotech Ltd. Industry-sponsored |
| Locations | 132 sites (Scottsdale, Arizona and 131 other locations) |
| Status | Recruiting |
| Started | March 27, 2026 |
| Main results expected | June 30, 2028 |
| Study ends | June 30, 2028 |
| Registry record updated | October 2, 2026 |
| Trial ID | NCT07440225 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults with newly diagnosed, treatment‑naive choroidal neovascularization due to AMD (including subfoveal, juxtafoveal, extrafoveal, RAP, or PCV lesions) with diagnosis made within 21 days of starting treatment.
✕Probably not a fit
Patients with uncontrolled blood pressure, uncontrolled glaucoma, recent cataract or certain eye surgeries within 90 days, prior macular laser in the study eye, a history of uveitis, or other active retinal diseases are excluded and may not benefit from participation.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This randomized Phase 2/3 trial enrolls treatment‑naive patients with choroidal neovascularization secondary to AMD and randomizes them to receive intravitreal tiespectus (MK-8748) or aflibercept. Eligible participants must have a diagnosis of neovascular AMD made within 21 days before starting treatment. Patients will receive regular in‑office eye injections and follow-up visits with vision testing and retinal imaging to track response. The trial is being run at several retina clinics in the United States.
Why it matters
Potential benefit: If successful, tiespectus could offer an alternative intravitreal treatment that preserves or improves vision comparable to aflibercept and may help patients who do not respond to current therapy.
How similar studies have gone: Approved anti‑VEGF drugs like aflibercept, ranibizumab, and bevacizumab have proven effective for wet AMD, while tiespectus (MK-8748) is an investigational agent with limited prior clinical data.
Who can join: the full rules
Show full inclusion / exclusion criteria
The main inclusion criteria include but are not limited to the following: * Has treatment naive choroidal neovascularization (CNV) secondary to age-related macular degeneration (AMD) including subfoveal, juxtafoveal and extrafoveal lesions or retinal angiomatous proliferations (RAP) and polypoidal choroidal vascularization (PCV) lesions in at least one eye (study eye) * The diagnosis of neovascular age-related macular degeneration (NVAMD) must have been made within 21 days prior to starting study treatment The main exclusion criteria include but are not limited to the following * Has uncontrolled blood pressure at screening * History of any prior macular laser photocoagulation in the study eye * History of uveitis in either eye * History of cataract surgery, minimally invasive glaucoma surgery, or Yttrium-Aluminium Garnet (Yag) laser capsulotomy in the study eye within 90 days before entering the study * Has uncontrolled glaucoma in the study eye * Active retinal disease other than the condition under investigation in the study eye * Has previously received anti- vascular endothelial growth factor (VEGF) therapy or other intravitreal (IVT) therapy in the study eye
Where it's running
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Research Network Arizona / Retina Macula Institute of Arizona
Scottsdale, Arizona, United States Recruiting -
Retina Center of Arkansas
Fayetteville, Arkansas, United States Recruiting -
Retina Partners of Northwest Arkansas, PLLC
Springdale, Arkansas, United States Recruiting -
Global Research Management, Inc.
Glendale, California, United States Recruiting -
Retinal Consultants Medical Group (Site 024)
Modesto, California, United States Recruiting -
Azul Vision / California Eye Specialists Medical Group, Inc.
Pasadena, California, United States Recruiting
Show 44 more locations
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Retina Consultants of Southern California (Site 043)
Redlands, California, United States Recruiting -
Retinal Consultants Medical Group (Site 020)
Sacramento, California, United States Recruiting -
Retinal Consultants Medical Group (Site 022)
Sacramento, California, United States Recruiting -
Florida Eye Clinic (Site 130)
Altamonte Springs, Florida, United States Recruiting -
Retina Group of Florida (Site 070)
Fort Lauderdale, Florida, United States Recruiting -
Vitreo Retinal Associates
Gainesville, Florida, United States Recruiting -
Florida Retina Institute
Jacksonville, Florida, United States Recruiting -
Florida Retina Consultants
Lakeland, Florida, United States Recruiting -
South Florida Retina Institute
Miami, Florida, United States Recruiting -
Retina Care Specialists
Palm Beach Gardens, Florida, United States Recruiting -
Fort Lauderdale Eye Institute (Site 042)
Plantation, Florida, United States Recruiting -
Retina Vitreous Associates of Florida (Site 049)
St. Petersburg, Florida, United States Recruiting -
Southern Vitreoretinal Associates
Tallahassee, Florida, United States Recruiting -
Retina Associates of Florida, LLC
Tampa, Florida, United States Recruiting -
Retina Vitreous Associates of Florida
Tampa, Florida, United States Recruiting -
Wildwood Clinical Research / Florida Retina Institute
Wildwood, Florida, United States Recruiting -
Illinois Retina Associates
Oak Park, Illinois, United States Recruiting -
Springfield Clinic
Springfield, Illinois, United States Recruiting -
Associated Vitreoretinal and Uveitis Consultants
Carmel, Indiana, United States Recruiting -
Midwest Eye Institute
Carmel, Indiana, United States Recruiting -
Cumberland Valley Retina Consultants (Site 007)
Hagerstown, Maryland, United States Recruiting -
Foundation for Vision Research (Site 073)
Grand Rapids, Michigan, United States Recruiting -
Retina Consultants of Minnesota
Saint Louis Park, Minnesota, United States Recruiting -
Retina Specialists of Mississippi
Hattiesburg, Mississippi, United States Recruiting -
Mississippi Retina Associates (Site 084)
Madison, Mississippi, United States Recruiting -
Mid Atlantic Retina
Cherry Hill, New Jersey, United States Recruiting -
Vision Research Center Eye Associates of New Mexico
Albuquerque, New Mexico, United States Recruiting -
ong Island Vitreoretinal Consultants / Vitreoretinal Consultants of NY (Site 105)
Hauppauge, New York, United States Recruiting -
Retina Vitreous Surgeons of CNY, PC (Site 033)
Liverpool, New York, United States Recruiting -
Piedmont Retina Specialists - Greensboro
Greensboro, North Carolina, United States Recruiting -
North Carolina Retina Associates
Greenville, North Carolina, United States Recruiting -
Piedmont Retina Specialists - Winston-Salem
Winston-Salem, North Carolina, United States Recruiting -
Cincinnati Eye Institute (Site 133)
Cincinnati, Ohio, United States Recruiting -
Retina Vitreous Center
Edmond, Oklahoma, United States Recruiting -
Tulsa Retina Consultants
Tulsa, Oklahoma, United States Recruiting -
Retina Northwest, PC
Portland, Oregon, United States Recruiting -
EyeHealth Northwest
Portland, Oregon, United States Recruiting -
Mid Atlantic Retina (Site 050)
Bethlehem, Pennsylvania, United States Recruiting -
Palmetto Retina Center
Aiken, South Carolina, United States Recruiting -
Charleston Neuroscience Institute - Bluffton (Site 124)
Bluffton, South Carolina, United States Recruiting -
Charleston Neuroscience Institute (Site 104)
Charleston, South Carolina, United States Recruiting -
Charleston Neuroscience Institute (CNI) d/b/a Retina Consultants of South Carolina
Mt. Pleasant, South Carolina, United States Recruiting -
Charles Retina Institute
Germantown, Tennessee, United States Recruiting -
Retina Research Institute of Texas (Site 010)
Abilene, Texas, United States Recruiting
+82 more sites. See ClinicalTrials.gov for the full list.
Study contacts
- Study coordinator: Toll Free Number
- Email: Trialsites@msd.com
- Phone: 1-888-577-8839
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Tiespectus (MK-8748) versus aflibercept to treat neovascular (wet) age-related macular degeneration
The study will see if tiespectus (MK-8748) works as well as aflibercept for people with newly diagnosed neovascular (wet) age-related macular degeneration.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.