Esta página se tradujo automáticamente y no se garantiza la precisión de la traducción. por favor refiérase a versión inglesa para un texto fuente.

A Clinical Trial of MK-8748 Compared to Aflibercept in Participants With Diabetic Macular Edema (MK-8748-004)

30 de octubre de 2026 actualizado por: Merck Sharp & Dohme LLC

A Randomized, Double-Masked, Multicenter, 3-Arm, Pivotal Phase 3 Study to Evaluate the Efficacy and Safety of Intravitreal (IVT) MK-8748 Compared With Aflibercept (2 mg) in Participants With Diabetic Macular Edema (DME)

Researchers are looking for new ways to treat diabetic macular edema (DME). In this trial, researchers want to learn if a trial medicine called MK-8748 can treat DME. An available standard (usual) treatment for DME is aflibercept. However, standard treatments such as aflibercept may not work for every person.

The main goal of this trial is to learn if MK-8748 works as well as aflibercept to treat DME.

Descripción general del estudio

Estado

Reclutamiento

Condiciones

Intervención / Tratamiento

Tipo de estudio

Intervencionista

Inscripción (Estimado)

960

Fase

  • Fase 3

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

  • Nombre: Toll Free Number
  • Número de teléfono: 1-888-577-8839
  • Correo electrónico: Trialsites@msd.com

Ubicaciones de estudio

  • Argentina
      • CABA, Argentina, C1023AAQ
        • Reclutamiento
        • Fundacion Zambrano ( Site 0402)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: +541170902222
  • Australia
    • New South Wales
      • Albury, New South Wales, Australia, 2640
        • Reclutamiento
        • Eyeclinic Albury-Wodonga ( Site 2204)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: +61260213755
      • Parramatta, New South Wales, Australia, 2150
        • Reclutamiento
        • Marsden Eye Specialists ( Site 2200)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: +61296357077
      • Strathfield, New South Wales, Australia, 2135
        • Reclutamiento
        • Strathfield Retina Clinic ( Site 2202)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: +61297463378
      • Sydney, New South Wales, Australia, 2000
        • Reclutamiento
        • Sydney Retina Clinic and Day Surgery ( Site 2203)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: +61292213755
  • Estados Unidos
    • Arizona
      • Gilbert, Arizona, Estados Unidos, 85297
        • Reclutamiento
        • Associated Retina Consultants, Ltd ( Site 0084)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 480-999-5458
    • California
      • Glendale, California, Estados Unidos, 91204
        • Reclutamiento
        • Global Research Management ( Site 0066)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 818-246-2560
      • Sacramento, California, Estados Unidos, 95825
        • Reclutamiento
        • Retinal Consultants Medical Group ( Site 0013)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 916-974-9279
    • Colorado
      • Denver, Colorado, Estados Unidos, 80222
        • Reclutamiento
        • Retina Specialists of Colorado ( Site 0068)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 720-443-2425
    • Connecticut
      • Manchester, Connecticut, Estados Unidos, 06042
        • Reclutamiento
        • Retina Consultants ( Site 0065)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 860-646-7704
    • Florida
      • Gainesville, Florida, Estados Unidos, 32607
        • Reclutamiento
        • Vitreo Retinal Associates ( Site 0042)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 352-519-5621
      • Palm Beach Gardens, Florida, Estados Unidos, 33410
        • Reclutamiento
        • Retina Care Specialists ( Site 0095)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 561-624-0099
      • Tampa, Florida, Estados Unidos, 33617
        • Reclutamiento
        • Retina Vitreous Associates of Florida ( Site 0034)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 813-987-2000
      • Wildwood, Florida, Estados Unidos, 34785
        • Reclutamiento
        • Florida Retina Institute ( Site 0105)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 877-357-3846
    • Indiana
      • Carmel, Indiana, Estados Unidos, 46032
        • Reclutamiento
        • Midwest Eye Institute ( Site 0113)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 317-805-2152
    • Kansas
      • Lenexa, Kansas, Estados Unidos, 66215
        • Reclutamiento
        • Retina Associates LLC ( Site 0024)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 913-831-7400
    • Maryland
      • Hagerstown, Maryland, Estados Unidos, 21740
        • Reclutamiento
        • Mid Atlantic Retina ( Site 0062)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 301-671-2400
      • Towson, Maryland, Estados Unidos, 21204
        • Reclutamiento
        • Retina Specialists ( Site 0074)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 410-296-9748
    • Mississippi
      • Madison, Mississippi, Estados Unidos, 39110
        • Reclutamiento
        • Mississippi Retina Associates, P.A. ( Site 0061)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 601-981-4091
    • New Jersey
      • Bloomfield, New Jersey, Estados Unidos, 07003
        • Reclutamiento
        • Envision Ocular, LLC ( Site 0039)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 973-707-5632
      • Cherry Hill, New Jersey, Estados Unidos, 08034
        • Reclutamiento
        • Mid Atlantic Retina ( Site 0048)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 800-331-6634
    • New York
      • Rochester, New York, Estados Unidos, 14620
        • Reclutamiento
        • Retina Associates of Western NY, PC ( Site 0038)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 585-442-3411
    • North Carolina
      • Wake Forest, North Carolina, Estados Unidos, 27587
        • Reclutamiento
        • North Carolina Retina Associates ( Site 0064)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 919-782-8038
    • South Carolina
      • Bluffton, South Carolina, Estados Unidos, 29910
        • Reclutamiento
        • Charleston Neuroscience Institute ( Site 0087)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 843-763-4466
      • Florence, South Carolina, Estados Unidos, 29501
        • Reclutamiento
        • Palmetto Retina Center ( Site 0063)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 803-931-0077
      • Mt. Pleasant, South Carolina, Estados Unidos, 29464
        • Reclutamiento
        • Charleston Neuroscience Institute ( Site 0022)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 843-763-4466
      • West Columbia, South Carolina, Estados Unidos, 29169
        • Reclutamiento
        • Palmetto Retina Center ( Site 0014)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 8039310077x124
    • Tennessee
      • Johnson City, Tennessee, Estados Unidos, 37604
        • Reclutamiento
        • Southeastern Retina Associates PC ( Site 0071)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 423-578-4364
      • Knoxville, Tennessee, Estados Unidos, 37922-3572
        • Reclutamiento
        • Southeastern Retina Associates PC ( Site 0018)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 865-934-3866
    • Texas
      • Austin, Texas, Estados Unidos, 78705
        • Reclutamiento
        • Austin Retina Associates ( Site 0008)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 512-451-0103
      • Bellaire, Texas, Estados Unidos, 77401
        • Reclutamiento
        • Retina Consultants of Texas ( Site 0001)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 713-524-3434
      • San Marcos, Texas, Estados Unidos, 78666
        • Reclutamiento
        • Austin Retina Associates ( Site 0080)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 512-451-0103
      • Schertz, Texas, Estados Unidos, 78154
        • Reclutamiento
        • Retina Consultants of Texas ( Site 0029)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 210-693-1063
    • West Virginia
      • Charleston, West Virginia, Estados Unidos, 25301
        • Reclutamiento
        • Retina Consultants ( Site 0104)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: 304-346-4400
  • Reino Unido
    • Bristol, City of
      • Bristol, Bristol, City of, Reino Unido, BS1 2LX
        • Reclutamiento
        • Bristol Eye Hospital ( Site 0902)
        • Contacto:
          • Study Coordinator
          • Número de teléfono: +44(0)1173421447

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

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

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Triple

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: MK-8748 Low Dose

Participants 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.
Droga: MK-8748

Administered by intravitreal injection (IVT)

Otros nombres:
  • Tiespectus
  • EYE201
Experimental: MK-8748 High Dose

Participants 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.
Droga: MK-8748

Administered by intravitreal injection (IVT)

Otros nombres:
  • Tiespectus
  • EYE201
Comparador activo: Aflibercept 2 mg

Participants 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.
Droga: Aflibercept

Administered by intravitreal injection (IVT)

Otros nombres:
  • Eylea

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Mean Change in Best-Corrected Visual Acuity (BCVA) (Early Treatment of Diabetic Retinopathy Study [ETDRS] Letters) From Baseline to Year 1
Periodo de tiempo: 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.
Baseline and 1 Year

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Mean Change in Central Subfield Thickness (CST) from Baseline to Week 52
Periodo de tiempo: Baseline and Week 52

Central subfield thickness (CST) in the study eye will be measured in microns using optical coherence tomography (OCT). The mean change in CST from baseline to Year 1 will be presented.
Baseline and Week 52
Mean Change in CST from Baseline Over Time
Periodo de tiempo: Up to approximately 2 years

Central subfield thickness (CST) in the study eye will be measured in microns using optical coherence tomography (OCT). The mean change in CST from baseline over time will be presented.
Up to approximately 2 years
Time to Absence of Diabetic Macular Edema (DME) at Week 52
Periodo de tiempo: Up to approximately Week 52

The absence of Diabetic Macular Edema (DME) is defined as a Central Subfield Thickness (CST) of <300 μm measured using optical coherence tomography (OCT). The time to absence of Diabetic Macular Edema (DME) in the study eye up to Week 52 will be presented.
Up to approximately Week 52
Proportion of Participants with Absence of Intraretinal Fluid Over Time
Periodo de tiempo: Up to approximately 2 years

Participants' intraretinal fluid in the study eye will be measured using optical coherence tomography (OCT). The proportion of participants with absence of intraretinal fluid over time will be presented.
Up to approximately 2 years
Proportion of Participants with Absence of Subretinal Fluid Over Time
Periodo de tiempo: Up to approximately 2 years

Participants' subretinal fluid in the study eye will be measured using optical coherence tomography (OCT). The proportion of participants with absence of subretinal fluid over time will be presented.
Up to approximately 2 years
Proportion of Participants with Absence of Intraretinal Fluid and Subretinal Fluid Over Time
Periodo de tiempo: Up to approximately 2 years

Participants' subretinal fluid and intraretinal fluid in the study eye will be measured using optical coherence tomography (OCT). The proportion of participants with absence of intraretinal and subretinal fluid over time will be presented.
Up to approximately 2 years
Proportion of Participants with Diabetic Retinopathy Severity Scale (DRSS) Score Improvement of ≥2 Steps from Baseline to Year 1
Periodo de tiempo: Baseline and 1 Year

The Diabetic Retinopathy Severity Scale (DRSS) classifies diabetic retinopathy (DR) into 12 severity steps ranging from absence of retinopathy to advanced proliferative diabetic retinopathy (PDR). DRSS grades= 10 (DR absent) - 85 (very advanced PDR), DRSS 90 = ungradable. All DRSS values are converted into a 12-level scale, from 1 (DR absent) to 12 (very advanced PDR), allowing derivation of ≥2-step change from baseline for post-baseline assessment. A lower score represents less advanced diabetic retinopathy. The proportion of participants with ≥2 step improvement in DRSS score from baseline to year 1 will be presented.
Baseline and 1 Year
Proportion of Participants with DRSS Score Improvement of ≥3 Steps from Baseline to Year 1
Periodo de tiempo: Baseline and 1 Year

The Diabetic Retinopathy Severity Scale (DRSS) classifies diabetic retinopathy (DR) into 12 severity steps ranging from absence of retinopathy to advanced proliferative diabetic retinopathy (PDR). DRSS grades= 10 (DR absent) - 85 (very advanced PDR), DRSS 90 = ungradable. All DRSS values are converted into a 12-level scale, from 1 (DR absent) to 12 (very advanced PDR), allowing derivation of ≥2-step change from baseline for post-baseline assessment. A lower score represents less advanced diabetic retinopathy. The proportion of participants with ≥3 step improvement in DRSS score from baseline to year 1 will be presented.
Baseline and 1 Year
Proportion of Participants with Resolution of Macular Leakage on Fluorescein Angiography (FA) at Week 24
Periodo de tiempo: Up to approximately Week 24

Fluorescein Angiography (FA) images will be used to determine the resolution of macular leakage in the study eye, defined as 0 to 1 mm^2. The proportion of participants with resolution of macular leakage at Week 24 will be presented.
Up to approximately Week 24
Mean change in Optical Coherence Tomography (OCT) Central Subfield Thickness (CST) from Baseline to Week 104
Periodo de tiempo: Baseline and Week 104

Central subfield thickness (CST) in the study eye will be measured in microns using optical coherence tomography (OCT). The mean change in OCT CST from baseline to Week 104 will be presented.
Baseline and Week 104
Proportion of Participants with DRSS Score Improvement of ≥2 Steps from Baseline to Week 104
Periodo de tiempo: Baseline and Week 104

The Diabetic Retinopathy Severity Scale (DRSS) classifies diabetic retinopathy (DR) into 12 severity steps ranging from absence of retinopathy to advanced proliferative diabetic retinopathy (PDR). DRSS grades= 10 (DR absent) - 85 (very advanced PDR), DRSS 90 = ungradable. All DRSS values are converted into a 12-level scale, from 1 (DR absent) to 12 (very advanced PDR), allowing derivation of ≥2-step change from baseline for post-baseline assessment. A lower score represents less advanced diabetic retinopathy. The proportion of participants with ≥2 step improvement in DRSS score from baseline to week 104 will be presented.
Baseline and Week 104
Proportion of Participants with DRSS Score Improvement of ≥3 Steps from Baseline to Week 104
Periodo de tiempo: Baseline and Week 104

The Diabetic Retinopathy Severity Scale (DRSS) classifies diabetic retinopathy (DR) into 12 severity steps ranging from absence of retinopathy to advanced proliferative diabetic retinopathy (PDR). DRSS grades= 10 (DR absent) - 85 (very advanced PDR), DRSS 90 = ungradable. All DRSS values are converted into a 12-level scale, from 1 (DR absent) to 12 (very advanced PDR), allowing derivation of ≥2-step change from baseline for post-baseline assessment. A lower score represents less advanced diabetic retinopathy. The proportion of participants with ≥3 step improvement in DRSS score from baseline to week 104 will be presented.
Baseline and Week 104
Proportion of Participants Without Retinal Fluid at the Foveal Center on OCT at Week 104
Periodo de tiempo: Up to approximately Week 104

Optical coherence tomography (OCT) will be used to measure retinal fluid at the foveal center of the study eye. The proportion of participants without retinal fluid at the foveal center on OCT at Week 104 will be presented.
Up to approximately Week 104
Mean change in Foveal Avascular Zone (FAZ) Area on Fluorescein Angiography (FA) from Baseline to Year 1
Periodo de tiempo: Baseline and 1 Year

Fluorescein Angiography (FA) images will be used to measure the Foveal Avascular Zone (FAZ) area of the study eye. The mean change in FAZ area on FA from baseline to year 1 will be presented.
Baseline and 1 Year
Proportion of Participants with Reduction in FAZ Area on FA from Baseline to Year 1
Periodo de tiempo: Baseline and 1 Year

Fluorescein Angiography (FA) images will be used to measure the Foveal Avascular Zone (FAZ) area of the study eye. The proportion of participants with reduction of FAZ area on FA from baseline to year 1 will be presented.
Baseline and 1 Year
Proportion of Participants Without Retinal Fluid at the Foveal Center at Week 52
Periodo de tiempo: Up to approximately Week 52

Participants' retinal fluid in the study eye will be measured using optical coherence tomography (OCT). The proportion of participants without retinal fluid at the foveal center at week 52 will be presented.
Up to approximately Week 52
Mean Number of Intravitreal (IVT) Injections from Week 56 to Week 104
Periodo de tiempo: Up to approximately 48 Weeks

The mean number of intravitreal (IVT) Injections from week 56 to week 104 will be presented.
Up to approximately 48 Weeks
Proportion of Participants on a Personalized Treatment Interval (PTI) of every 8 weeks (Q8W) at Week 104
Periodo de tiempo: Up to approximately Week 104

The proportion of participants on a personalized treatment interval (PTI) of every 8 weeks (Q8W) at Week 104 will be presented.
Up to approximately Week 104
Proportion of Participants on a Personalized Treatment Interval (PTI) of every 12 weeks (Q12W) at Week 104
Periodo de tiempo: Up to approximately Week 104

The proportion of participants on a personalized treatment interval (PTI) of every 12 weeks (Q12W) at Week 104 will be presented.
Up to approximately Week 104
Proportion of Participants on a Personalized Treatment Interval (PTI) of every 16 weeks (Q16W) at Week 104
Periodo de tiempo: Up to approximately Week 104

The proportion of participants on a personalized treatment interval (PTI) of every 16 weeks (Q16W) at Week 104 will be presented.
Up to approximately Week 104
Proportion of Participants who Gain ≥5 ETDRS Letters from Baseline to Year 1
Periodo de tiempo: 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. The proportion of participants who gain ≥5 ETDRS letters from baseline to year 1 will be presented.
Baseline and 1 Year
Proportion of Participants who Gain ≥10 ETDRS Letters from Baseline to Year 1
Periodo de tiempo: 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. The proportion of participants who gain ≥10 ETDRS letters from baseline to year 1 will be presented.
Baseline and 1 Year
Proportion of Participants who Gain ≥15 ETDRS Letters from Baseline to Year 1
Periodo de tiempo: 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. The proportion of participants who gain ≥15 ETDRS letters from baseline to year 1 will be presented.
Baseline and 1 Year
Proportion of Participants who Lose ≥5 ETDRS Letters from Baseline to Year 1
Periodo de tiempo: 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. The proportion of participants who lose ≥5 ETDRS letters from baseline to year 1 will be presented.
Baseline and 1 Year
Proportion of Participants who Lose ≥10 ETDRS Letters from Baseline to Year 1
Periodo de tiempo: 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. The proportion of participants who lose ≥10 ETDRS letters from baseline to year 1 will be presented.
Baseline and 1 Year
Proportion of participants who Lose ≥15 ETDRS Letters from Baseline to Year 1
Periodo de tiempo: 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. The proportion of participants who lose ≥15 ETDRS letters from baseline to year 1 will be presented.
Baseline and 1 Year
Time to gain ≥5 ETDRS Letters Over Time
Periodo de tiempo: Up to approximately 2 years

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. The time to gain ≥5 ETDRS letters over time will be presented.
Up to approximately 2 years
Time to gain ≥10 ETDRS Letters at Week 52
Periodo de tiempo: Up to approximately Week 52

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. The time to gain ≥10 ETDRS letters up to Week 52 will be presented.
Up to approximately Week 52
Time to gain ≥15 ETDRS letters at Week 52
Periodo de tiempo: Up to approximately Week 52

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. The time to gain ≥15 ETDRS letters up to Week 52 will be presented.
Up to approximately Week 52
Mean Change in BCVA (ETDRS letters) from Baseline Over Time
Periodo de tiempo: Baseline and 2 Years

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. The mean change in BCVA (ETDRS) letters from baseline over time will be presented.
Baseline and 2 Years
Proportion of Participants with BCVA Snellen Equivalent of 20/20 or Better at Year 1
Periodo de tiempo: Up to approximately 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. The number of letters read correctly, Snellen fraction are converted to a decimal scale. There are 11 lines on a standard Snellen chart ranging from 0.1 (20/200) at worst to 2.0 (20/10) at best. 20/20 on the decimal scale is equal to 1.0. The higher the number of letters read correctly (higher number on the decimal scale), the better the vision (or visual acuity). The Snellen equivalent of 20/20 or better is defined as ≥84 letters correctly read in the ETDRS chart. The proportion of participants with BCVA Snellen equivalent of 20/20 or better at year 1 will be presented.
Up to approximately 1 year
Proportion of Participants with BCVA Snellen equivalent of 20/200 or Worse at Year 1
Periodo de tiempo: Up to approximately 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. The number of letters read correctly, Snellen fraction are converted to a decimal scale. There are 11 lines on a standard Snellen chart ranging from 0.1 (20/200) at worst to 2.0 (20/10) at best. 20/20 on the decimal scale is equal to 1.0. The higher the number of letters read correctly (higher number on the decimal scale), the better the vision (or visual acuity). The Snellen equivalent of 20/200 or worse is defined as ≤38 letters correctly read in the ETDRS chart. The proportion of participants with BCVA Snellen equivalent of 20/200 or Worse at year 1 will be presented.
Up to approximately 1 year
Proportion of Participants with BCVA Snellen Equivalent of 20/40 or Better at Year 1
Periodo de tiempo: Up to approximately 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. The number of letters read correctly, Snellen fraction are converted to a decimal scale. There are 11 lines on a standard Snellen chart ranging from 0.1 (20/200) at worst to 2.0 (20/10) at best. 20/20 on the decimal scale is equal to 1.0. The higher the number of letters read correctly (higher number on the decimal scale), the better the vision (or visual acuity). The Snellen equivalent of 20/40 or better is defined as ≥69 letters correctly read in the ETDRS chart. The proportion of participants with BCVA Snellen equivalent of 20/40 or better at year 1 will be presented.
Up to approximately 1 year
Mean Change in BCVA from Baseline to Year 2
Periodo de tiempo: Baseline and Year 2

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 2 will be assessed.
Baseline and Year 2
Proportion of Participants with BCVA Snellen Equivalent of 20/40 or Better at Year 2
Periodo de tiempo: Up to approximately 2 years

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. The number of letters read correctly, Snellen fraction are converted to a decimal scale. There are 11 lines on a standard Snellen chart ranging from 0.1 (20/200) at worst to 2.0 (20/10) at best. 20/20 on the decimal scale is equal to 1.0. The higher the number of letters read correctly (higher number on the decimal scale), the better the vision (or visual acuity). The Snellen equivalent of 20/40 or better is defined as ≥69 letters correctly read in the ETDRS chart. The proportion of participants with BCVA Snellen equivalent of 20/40 or better at year 2 will be presented.
Up to approximately 2 years
Proportion of Participants with BCVA Snellen Equivalent of 20/200 or Worse at Year 2
Periodo de tiempo: Up to approximately 2 years

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. The number of letters read correctly, Snellen fraction are converted to a decimal scale. There are 11 lines on a standard Snellen chart ranging from 0.1 (20/200) at worst to 2.0 (20/10) at best. 20/20 on the decimal scale is equal to 1.0. The higher the number of letters read correctly (higher number on the decimal scale), the better the vision (or visual acuity). The Snellen equivalent of 20/200 or worse is defined as ≤38 letters correctly read in the ETDRS chart. The proportion of participants with BCVA Snellen equivalent of 20/200 or Worse at year 2 will be presented.
Up to approximately 2 years
Proportion of Participants who Gain ≥5 ETDRS Letters from Baseline to Year 2
Periodo de tiempo: Baseline and 2 Years

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. The proportion of participants who gain ≥5 ETDRS Letters from baseline to year 2 will be presented.
Baseline and 2 Years
Proportion of Participants who Gain ≥10 ETDRS Letters from Baseline to Year 2
Periodo de tiempo: Baseline and 2 Years

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. The proportion of participants who gain ≥10 ETDRS Letters from baseline to year 2 will be presented.
Baseline and 2 Years
Proportion of Participants who Gain ≥15 ETDRS Letters from Baseline to Year 2
Periodo de tiempo: Baseline and 2 Years

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. The proportion of participants who gain ≥15 ETDRS letters from baseline to year 2 will be presented.
Baseline and 2 Years
Proportion of Participants who Lose ≥5 ETDRS Letters from Baseline to Year 2
Periodo de tiempo: Baseline to 2 Years

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. The proportion of participants who lose ≥5 ETDRS Letters baseline to year 2 will be presented.
Baseline to 2 Years
Proportion of Participants who Lose ≥10 ETDRS Letters from Baseline to Year 2
Periodo de tiempo: Baseline to 2 Years

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. The proportion of participants who lose ≥10 ETDRS letters from baseline to year 2 will be presented.
Baseline to 2 Years
Proportion of Participants who Lose ≥15 ETDRS Letters from Baseline to Year 2
Periodo de tiempo: Baseline and 2 years

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. The proportion of participants who lose ≥15 ETDRS Letters from baseline to year 2 will be presented.
Baseline and 2 years
Change from Baseline in National Eye Institute Visual Function Questionnaire-25 (NEI-VFQ-25) Version Composite Score at Week 48
Periodo de tiempo: Baseline and Week 48

The NEI-VFQ-25 is a validated and reliable 25-item survey that measures the influence of visual disability and visual symptoms on generic health domains (emotional well-being, social functioning and task-oriented domains). The composite score ranges from 0-100 with the higher score indicating better visual function. The change from baseline in NEI-VFQ-25 version composite score at week 48 will be presented.
Baseline and Week 48
Change from Baseline in National Eye Institute Visual Function Questionnaire-25 (NEI-VFQ-25) Version Composite Score at Week 104
Periodo de tiempo: Baseline and Week 104

The NEI-VFQ-25 is a validated and reliable 25-item survey that measures the influence of visual disability and visual symptoms on generic health domains (emotional well-being, social functioning and task-oriented domains). The composite score ranges from 0-100 with the higher score indicating better visual function. The change from baseline in NEI-VFQ-25 version composite score at week 104 will be presented.
Baseline and Week 104
Number of Participants who Experience a Systemic Adverse Events (AEs)
Periodo de tiempo: Up to approximately 2 years

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who experience a systemic AE will be presented.
Up to approximately 2 years
Number of Participants who Experience an Ocular Adverse Events (AEs)
Periodo de tiempo: Up to approximately 2 years

An ocular adverse event (OAE) is defined as any untoward medical occurrence involving the eye or ocular adnexa (including eyelids, conjunctiva, lacrimal apparatus, extraocular muscles, and orbit) that:

Occurs or worsens after the first administration of the investigational product (IP) or a study-related ocular procedure, and does not necessarily have a causal relationship with the IP or procedure.

OAEs include, but are not limited to, changes in: Symptoms (e.g., ocular pain, photophobia, floaters, blurred vision), Visual function (e.g., best-corrected visual acuity [BCVA], visual field). Intraocular pressure (IOP), Anterior segment findings (e.g., conjunctival hyperemia, keratitis, anterior chamber inflammation), Posterior segment findings (e.g., vitreous inflammation, retinal hemorrhages, retinal tears or detachment, macular edema), or ocular adnexa (e.g., eyelid edema, ptosis). The number of participants who experience an ocular AE will be presented.
Up to approximately 2 years
Number of Participants who Discontinue Study Treatment Due to an AE
Periodo de tiempo: Up to approximately 2 years

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. The number of participants who discontinue study treatment due to an AE will be reported.
Up to approximately 2 years
Number of Participants with Antidrug Antibodies (ADA) to MK-8748
Periodo de tiempo: At designated time points (up to approximately 104 weeks)

Blood samples collected at designated timepoints will be used to determine the ADA response to MK-8748. The number of participants with ADA to MK-8748 will be presented.
At designated time points (up to approximately 104 weeks)
Maximum Plasma Concentration (Cmax) of MK-8748
Periodo de tiempo: At designated time points (up to approximately 104 weeks)

Cmax is defined as the peak concentration over the dosing interval. Blood samples collected pre-dose and at multiple timepoints post-dose will be used to determine Cmax of MK-8748.
At designated time points (up to approximately 104 weeks)
Plasma Trough Concentration (Ctrough) of MK-8748
Periodo de tiempo: At designated time points (up to approximately 104 weeks)

Ctrough is defined as the trough concentration. Blood samples collected pre-dose and at multiple timepoints post-dose will be used to determine Ctrough of MK-8748.
At designated time points (up to approximately 104 weeks)

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Merck Sharp & Dohme LLC

Investigadores

  • Director de estudio: Medical Director, Merck Sharp & Dohme LLC

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Enlaces Útiles

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

27 de agosto de 2026

Finalización primaria (Estimado)

31 de octubre de 2028

Finalización del estudio (Estimado)

31 de octubre de 2029

Fechas de registro del estudio

Enviado por primera vez

10 de julio de 2026

Primero enviado que cumplió con los criterios de control de calidad

10 de julio de 2026

Publicado por primera vez (Actual)

15 de julio de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

3 de noviembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

30 de octubre de 2026

Última verificación

1 de octubre de 2026

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • 8748-004
  • MK-8748-004 (Otro identificador: MSD)
  • 2026-526790-42-00 (Identificador de registro: EU CT)
  • U1111-1340-0203 (Identificador de registro: UTN)

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

SÍ

Descripción del plan IPD

https://trialstransparency.msdclinicaltrials.com/pdf/ProcedureAccessClinicalTrialData.pdf

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

Sí

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

Suscribir