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MK-8748

Phase 3

Diabetic Retinopathy | Small molecule | Ophthalmology |Merck & Company, Inc.|Trials Updated: Oct 9, 2026

MK-8748 development status

Highest phase Phase 3
Registered trials 2 across 1 sponsor since Jul 2026

MK-8748 target and mechanism

Molecular targetTie2
Target classReceptor
ModalitySmall molecule

Also known as EYE201, Tiespectus

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials2
Total Enrollment2,064

FDA Designations

No designations recorded

MK-8748 clinical trials

MK-8748 · 2 trials · 2 indications

Phase 3 2
NCT07705607A Clinical Trial of MK-8748 Compared to Aflibercept in Participants With Diabetic Macular Edema (MK-8748-005)Diabetic Retinopathy
RECRUITING1,104 Analytics
NCT07705555A Clinical Trial of MK-8748 Compared to Aflibercept in Participants With Diabetic Macular Edema (MK-8748-004)Diabetic Retinopathy
RECRUITING960 Analytics
PHASE3RECRUITING
A Clinical Trial of MK-8748 Compared to Aflibercept in Participants With Diabetic Macular Edema (MK-8748-005)
Diabetic RetinopathyUnlock trial analytics
PHASE3RECRUITING
A Clinical Trial of MK-8748 Compared to Aflibercept in Participants With Diabetic Macular Edema (MK-8748-004)
Diabetic RetinopathyUnlock trial analytics

Study Endpoints

Primary Endpoints

Mean Change in Best-Corrected Visual Acuity (BCVA) (Early Treatment of Diabetic Retinopathy Study [ETDRS] Letters) From Baseline to Year 1
Baseline and 1 Year

Participants' BCVA in the study eye will be measured using the Early Treatment of Diabetic Retinopathy (ETDRS) methodology. The ETDRS letter score ranges from 0 to 100, with a higher score indicating better visual acuity. Mean change in ETDRS letters from baseline to Year 1 will be assessed.

Secondary Endpoints

Mean Change in Central Subfield Thickness (CST) from Baseline to Week 52
Baseline and Week 52
Mean Change in CST from Baseline Over Time
Up to approximately 2 years
Time to Absence of Diabetic Macular Edema (DME) at Week 52
Up to approximately Week 52
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
MK-8748 Low DoseEXPERIMENTALParticipants receive 5 initial administrations of MK-8748 low dose every 4 weeks (Q4W), then continue to receive MK-8748 low dose every 8 weeks (Q8W) until week 48. After week 48, participants will be treated at intervals determined based on individualized response to treatment, up to week 100.
MK-8748 High DoseEXPERIMENTALParticipants receive 5 initial administrations of MK-8748 high dose every 4 weeks (Q4W), then continue to receive MK-8748 high dose every 8 weeks (Q8W) until week 48. After week 48, participants will be treated at intervals determined based on individualized response to treatment, up to week 100.
Aflibercept 2 mgACTIVE_COMPARATORParticipants receive 5 initial administrations of aflibercept 2 mg every 4 weeks (Q4W), then continue to receive aflibercept 2mg every 8 weeks (Q8W) until week 100.

Interventions

NameTypeDescription
MK-8748DRUGAdministered by intravitreal injection (IVT)
AfliberceptDRUGAdministered by intravitreal injection (IVT)
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites7

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 edem...

Countries:United StatesAustralia
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Competitive Landscape -Diabetic Retinopathy 14 trials

Recent Changes (Last 90 Days)

LOWOct 9, 2026NCT07705555lastUpdatePostDate: changed
LOWOct 9, 2026NCT07705607lastUpdatePostDate: changed
LOWOct 9, 2026NCT07705555lastUpdatePostDate: changed
LOWOct 9, 2026NCT07705607lastUpdatePostDate: changed
LOWOct 1, 2026NCT07705555lastUpdatePostDate: changed
LOWOct 1, 2026NCT07705607lastUpdatePostDate: changed
LOWOct 1, 2026NCT07705555lastUpdatePostDate: changed
LOWOct 1, 2026NCT07705607lastUpdatePostDate: changed
LOWSep 30, 2026NCT07705607startDate: changed
LOWSep 30, 2026NCT07705607startDate: changed
LOWSep 28, 2026NCT07705555lastUpdatePostDate: changed
LOWSep 28, 2026NCT07705607Status: NOT_YET_RECRUITING → RECRUITING
LOWSep 28, 2026NCT07705555lastUpdatePostDate: changed
LOWSep 28, 2026NCT07705607Status: NOT_YET_RECRUITING → RECRUITING
LOWSep 19, 2026NCT07705555lastUpdatePostDate: changed
LOWSep 19, 2026NCT07705555lastUpdatePostDate: changed
LOWSep 19, 2026NCT07705555lastUpdatePostDate: changed
LOWSep 16, 2026NCT07705555lastUpdatePostDate: changed
LOWSep 16, 2026NCT07705555lastUpdatePostDate: changed
LOWSep 16, 2026NCT07705555lastUpdatePostDate: changed

Frequently asked questions about MK-8748

What is MK-8748 used for?

MK-8748 is an investigational small molecule being developed for diabetic retinopathy, including diabetic macular edema. It is not yet approved and remains in clinical development. Merck & Company, Inc. is studying it in adults with these retinal conditions, with the goal of offering a treatment option for diabetic eye disease.

What does MK-8748 target?

MK-8748 targets Tie2, a receptor. Tie2 is involved in vascular stability and blood vessel function in the retina, and modulating it is the intended mechanism for addressing the vascular leakage and damage associated with diabetic retinopathy and diabetic macular edema. The drug is a small molecule.

Who is developing MK-8748?

Merck & Company, Inc., which trades under the ticker MRK, is developing MK-8748. The company is running the Phase 3 clinical program for the drug in diabetic retinopathy and diabetic macular edema.

What phase is MK-8748 in?

MK-8748 is in Phase 3 clinical development. It is investigational and has not been approved by the FDA. The program includes two active Phase 3 trials, both currently recruiting, with a combined planned enrollment of 2,064 participants.

What clinical trials is MK-8748 in?

MK-8748 is being studied in two Phase 3 trials: NCT07705607, which is recruiting in the United States with 1,104 participants, and NCT07705555, which is recruiting in the United States and Australia with 960 participants. Both compare MK-8748 to aflibercept in adults with diabetic macular edema.

How are the MK-8748 Phase 3 trials designed?

Both MK-8748 Phase 3 trials are randomized, double-blind, and active-controlled, comparing the drug to aflibercept in participants with diabetic macular edema. NCT07705607 and NCT07705555 enroll adults aged 18 years and older, and neither trial includes healthy volunteers.