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NCT06850922CompletedPhase 1/2

A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Efficacy of RO7446603 Administered Alone or in Combination With Aflibercept or Faricimab in Participants With Diabetic Macular Edema

A Phase I/II Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Efficacy of RO7446603 Administered Alone or in Combination With Aflibercept or Faricimab in Patients With Diabetic Macular Edema

Source: ClinicalTrials.gov · Last updated 23 Jun 2026

Brief summary (registry, in English)

This study aims to evaluate the ocular and systemic safety, tolerability and efficacy of RO7446603 in participants with diabetic macular edema (DME). The study consists of 2 segments: Phase I (Parts 1-4) and Phase II (Part 5). Phase I investigated the safety of RO7446603 following a single and multiple intravitreal (IVT) doses as monotherapy or co-administered with IVT aflibercept or IVT faricimab (in separate injections). Phase II will investigate the safety, tolerability, pharmacokinetics (PK) and efficacy of two dose levels of RO7446603 in combination with faricimab, with the two drugs co-mixed and administered as a single IVT injection, compared to faricimab alone. The first participant was enrolled in the Phase I segment on June 22, 2022. Phase I has been completed.

Status (registry)
Completed
Phase (registry)
Phase 1/2
Study type
Interventional
Enrollment
388 (actual)
First submitted
26 Feb 2025
Start date
22 Jun 2022
Primary completion date
19 May 2026
Lead sponsor
Genentech, Inc.
NCT number
NCT06850922

What you commit to

  • Study type: Interventional · Phase 1/2
  • Participants enrolled: 388
  • From 22 Jun 2022 to the primary completion date, 19 May 2026
  • 77 sites in 3 countries
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • Currently untreated DM or previously untreated participants who initiated oral anti-diabetic medication or insulin within 90 days prior to Day 1
  • For Parts 1-4: IVT anti-VEGF treatment within 90 days prior to Day 1; For Part 5: IVT anti-VEGF treatment within 120 days prior to Day 1 or IVT anti-VEGF treatment prior to Day 1 for treatment naïve participants
  • Treatment with SUSVIMOTM (ranibizumab injection) prior to Day 1
  • Any IVT or periocular (sub-tenons) corticosteroid treatment within 6 months prior to Day 1

Other illness

  • Any current or history of ocular disease other than DME that may confound assessment of the macula or affect central vision
  • Active or history of uveitis, vitritis (grade trace or above), and/or scleritis in either eye Other protocol-specified inclusion/exclusion criteria may apply

Other

  • Uncontrolled blood pressure (BP)
  • Pregnancy or breastfeeding, or intention to become pregnant during the study
  • Proliferative diabetic retinopathy (PDR) in the study eye

Who the study is looking for

  • Documented diagnosis of diabetes mellitus (DM) (Type 1 or Type 2) with glycated hemoglobin (HbA1c) \< 12%
  • Macular thickening secondary to DME involving the center of the fovea \> 325 microns
  • Decreased VA attributable primarily to DME between 25 and 73 ETDRS letters

Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (77)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Beijing Tongren Hospital, Capital Medical University
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BeijingChinaUnknown status
Peking Union Medical College Hospital
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BeijingChinaUnknown status
Beijing Hospital
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BeijingChinaUnknown status
Shanghai General Hospital - North Campus
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ShanghaiChinaUnknown status
Tianjin Medical University Eye Hospital
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TianjinChinaUnknown status
Eye Hospital, WMU (Zhejiang Eye Hospital)
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WenzhouChinaUnknown status
Emanuelli Research and Development Center, LLC
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AreciboPuerto RicoUnknown status
Retina Research Institute of Texas
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AbileneUnited StatesUnknown status
Retina Consultants of Hawaii
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‘AieaUnited StatesUnknown status
Texas Retina Associates
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ArlingtonUnited StatesUnknown status
Western Carolina Retinal Associate PA
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AshevilleUnited StatesUnknown status
Southeast Retina Center
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AugustaUnited StatesUnknown status
University of Colorado - Eye Center - PPDS
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AuroraUnited StatesUnknown status
Austin Clinical Research, LLC
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AustinUnited StatesUnknown status
Austin Retina Associates
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AustinUnited StatesUnknown status
The Retina Care Center
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BaltimoreUnited StatesUnknown status
Johns Hopkins Hospital
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BaltimoreUnited StatesUnknown status
Retina & Vitreous of Texas
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BellaireUnited StatesUnknown status
Cincinnati Eye Institute
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Blue AshUnited StatesUnknown status
Retinal Diagnostic Center
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CampbellUnited StatesUnknown status
North Carolina Retina Associates
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CaryUnited StatesUnknown status
Retina Group of Washington
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Chevy ChaseUnited StatesUnknown status
Illinois Eye and Ear Infirmary
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ChicagoUnited StatesUnknown status
University Hospitals Cleveland Medical Center*
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ClevelandUnited StatesUnknown status
Retina Consultants of Southern Colorado PC
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Colorado SpringsUnited StatesUnknown status
Ohio State Eye and Ear Institute
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ColumbusUnited StatesUnknown status
Texas Retina Associates
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DallasUnited StatesUnknown status
Retina Specialists of Colorado
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DenverUnited StatesUnknown status
Duke University Medical Center
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DurhamUnited StatesUnknown status
Erie Retina Research
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ErieUnited StatesUnknown status
National Ophthalmic Research Institute
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Fort MyersUnited StatesUnknown status
Retina Consultants of Orange County
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FullertonUnited StatesUnknown status
Charles Retina Institute
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GermantownUnited StatesUnknown status
Cumberland Valley Retina Consultants
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HagerstownUnited StatesUnknown status
Long Island Vitreoretinal Consultants;Opthalmology
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HauppaugeUnited StatesUnknown status
Graystone Eye-Hickory
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HickoryUnited StatesUnknown status
Raj K. Maturi, MD PC
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IndianapolisUnited StatesUnknown status
Florida Retina Institute
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JacksonvilleUnited StatesUnknown status
Retina Vitreous Surgeons of CNY, PC
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LiverpoolUnited StatesUnknown status
Advanced Vision Research Institute
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LongmontUnited StatesUnknown status
Opthalmic Consultants of LI
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LynbrookUnited StatesUnknown status
Piedmont Eye Center
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LynchburgUnited StatesUnknown status
Georgia Retina PC
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MariettaUnited StatesUnknown status
Valley Retina Institute P.A.
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McAllenUnited StatesUnknown status
Retinal Consultants Medical Group
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ModestoUnited StatesUnknown status
Northern California Retina Vitreous Associates
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Mountain ViewUnited StatesUnknown status
Wagner Kapoor Institute
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NorfolkUnited StatesUnknown status
University Retina and Macula Associates, PC
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Oak ForestUnited StatesUnknown status
Wills Eye Hospital
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PhiladelphiaUnited StatesUnknown status
Retinal Research Institute, LLC
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PhoenixUnited StatesUnknown status
Arizona Retina and Vitreous Consultants
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PhoenixUnited StatesUnknown status
Associated Retinal Consultants PC
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PhoenixUnited StatesUnknown status
Virginia Eye Institute - Richmond - 7301 Forest Ave
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RichmondUnited StatesUnknown status
Retina Institute of Virginia
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RichmondUnited StatesUnknown status
Associated Retinal Consultants - Royal Oak
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Royal OakUnited StatesUnknown status
Retinal Consultants Medical Group
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SacramentoUnited StatesUnknown status
Retina Consultants Minnesota
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Saint Louis ParkUnited StatesUnknown status
Retina Associates of Utah, PLLC;Clinical Research
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Salt Lake CityUnited StatesUnknown status
Brown Retina Institute
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San AntonioUnited StatesUnknown status
Medical Center Ophthalmology Associates
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San AntonioUnited StatesUnknown status
Retina Consultants of Texas: San Antonio
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San AntonioUnited StatesUnknown status
University of California San Francisco
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San FranciscoUnited StatesUnknown status
Sewickely Eye Group
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SewickleyUnited StatesUnknown status
Spokane Eye Clinical Research
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SpokaneUnited StatesUnknown status
Retina Partners of Northwest Arkansas, PLLC
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SpringdaleUnited StatesUnknown status
Cascade Medical Research Institute, LLC
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SpringfieldUnited StatesUnknown status
Retina Associates of Florida;Retina Associates of Florida
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TampaUnited StatesUnknown status
Retina Consultants of Texas
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The WoodlandsUnited StatesUnknown status
Macula Retina Vitreous Research Institute
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TorranceUnited StatesUnknown status
Tulsa Retina Consultants
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TulsaUnited StatesUnknown status
North Carolina (NC) Retina Associates - Wake Forest Office
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Wake ForestUnited StatesUnknown status
Chesapeake Retina Centers - Waldorf
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WaldorfUnited StatesUnknown status
Bay Area Retina Associates;Study Department
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Walnut CreekUnited StatesUnknown status
Retina Group of New England
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WaterfordUnited StatesUnknown status
Palmetto Retina Center
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West ColumbiaUnited StatesUnknown status
Strategic Clinical Research Group, LLC
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Willow ParkUnited StatesUnknown status
Piedmont Retina Specialists
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Winston-SalemUnited StatesUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.