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New eye drug aims to restore vision in Diabetes-Related swelling

NCT ID NCT07705555

Disease control Sponsor: Merck Sharp & Dohme LLC Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 15, 2026 · Last updated Sep 18, 2026 · Updated 6 times

Summary

This phase 3 trial tests whether an experimental drug called MK-8748 can treat diabetic macular edema (DME), a condition where fluid builds up in the retina and blurs vision. About 960 adults with DME will receive either MK-8748 or the standard treatment aflibercept via eye injections. The main goal is to see if MK-8748 improves vision as well as aflibercept over one year.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
an experimental drug called MK-8748 (also known as EYE201 or Tiespectus) given as an eye injection
What this could lead to
If MK-8748 works as well as or better than aflibercept, it could offer a new treatment option for people with diabetic macular edema who do not respond well to current therapies.
What could go wrong
This is a phase 3 trial, but the drug is still experimental. It may not prove as effective as aflibercept, and eye injections carry risks like infection or inflammation.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

About 960 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2026

Expected to finish

Oct 2029

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Has Type 1 or Type 2 diabetes mellitus and a hemoglobin A1c (HbA1c) of ≤12% * Has a decrease in vision in the study eye determined by the Investigator to be primarily the result of diabetic macular edema (DME) * For participants who are treatment-naïve for DME, the diagnosis must have been made within 9 months of screening. For all treatment-experienced participants, the first treatment should have been no longer than 3 years prior to the Screening visit Exclusion Criteria: The main exclusion criteria include but are not limited to the following: * Has had renal failure requiring renal transplant, hemodialysis, or peritoneal dialysis or has renal failure anticipated to require hemodialysis or peritoneal dialysis at any time during the study * Has history of stroke (cerebral vascular accident) or myocardial infarction within 180 days to first dose of study intervention * Has newly diagnosed or previously untreated diabetes mellitus and initiated oral or injectable anti-diabetic medication within 3 months to first dose of study intervention * Has history of cataract surgery and/or minimally invasive glaucoma surgery in the study eye within 90 days of screening * Has any treatment for complications of cataract surgery with steroids or yttrium aluminum garnet (YAG) laser capsulotomy in the study eye within 90 days of screening * Has advanced or uncontrolled glaucoma in the study eye * Has any history of retinal detachment or treatment or surgery for retinal detachment in the study eye * Has active retinal disease other than the condition under investigation in the study eye * Has uncontrolled blood pressure at screening

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Conditions

The condition(s) this trial relates to.

diabetic macular edema diabetic retinopathy Macular Edema macular retinal edema

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Diabetic retinopathy Macular edema

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    8 sites. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Austin Retina Associates ( Site 0008)

    RECRUITING

    Austin, Texas, 78705, United States

  • Envision Ocular, LLC ( Site 0039)

    RECRUITING

    Bloomfield, New Jersey, 07003, United States

  • Global Research Management ( Site 0066)

    RECRUITING

    Glendale, California, 91204, United States

  • Mid Atlantic Retina ( Site 0062)

    RECRUITING

    Hagerstown, Maryland, 21740, United States

  • Retina Associates of Western NY, PC ( Site 0038)

    RECRUITING

    Rochester, New York, 14620, United States

  • Retina Specialists of Colorado ( Site 0068)

    RECRUITING

    Denver, Colorado, 80222, United States

  • Retina Vitreous Associates of Florida ( Site 0034)

    RECRUITING

    Tampa, Florida, 33617, United States

  • Southeastern Retina Associates PC ( Site 0071)

    RECRUITING

    Johnson City, Tennessee, 37604, United States

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