Clinical trial Recruiting at 49 sites Phase 3 Interventional Ages 18 and up

Intravitreal KSI-101 for macular edema due to inflammation (PEAK)

Official title: A Randomized, Double-masked, Sham-controlled, Multicenter, Phase 3 Study to Evaluate the Efficacy and Safety of Intravitreal Tabirafusp Alfa (KSI-101) in Participants With Macular Edema Secondary to Inflammation (MESI) - PEAK

Run by Kodiak Sciences Inc · NCT06990399 · Data updated 2026-11-12

This trial will test whether injections of KSI-101 can reduce retinal swelling and improve vision in adults with macular edema caused by non-infectious inflammation.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment600 (estimated)
SponsorKodiak Sciences Inc
Industry-sponsored
Locations56 sites (Phoenix, Arizona and 55 other locations)
StatusRecruiting
StartedJuly 30, 2025
Main results expectedApril 2027
Study endsNovember 2027
Registry record updatedMay 18, 2026
Trial IDNCT06990399 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with non-infectious intraocular inflammation and macular edema with CST ≥400 µm and BCVA between 25 and 70 ETDRS letters in the study eye are ideal candidates.

Probably not a fit

Patients whose macular edema is caused by diabetes, retinal vein occlusion, or wet AMD, or those with active ocular or periocular infection, are not expected to benefit from this study treatment.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 3 study gives intravitreal injections of KSI-101 or a sham procedure to participants with macular edema secondary to non-infectious intraocular inflammation. Participants must have a central subfield thickness of ≥400 µm on SD-OCT and best-corrected visual acuity between 25 and 70 ETDRS letters (about 20/40 to 20/320) in the study eye. The protocol compares changes in retinal thickness and visual acuity while closely monitoring ocular safety and signs of inflammation over the treatment period. The trial is being conducted at multiple U.S. eye centers, including sites in Arizona and California such as the UCLA Stein Eye Institute.

Why it matters

Potential benefit: If successful, KSI-101 could reduce retinal swelling and improve or stabilize vision for people with inflammatory macular edema.

How similar studies have gone: Intravitreal biologic injections have helped other types of macular edema, but KSI-101 is a newer agent now being tested in Phase 3 for inflammatory macular edema.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Macular Edema Secondary to Inflammation (MESI) with a central subfield thickness (CST) of ≥400 microns on SD-OCT in Study Eye.
* Definitive presence of Intraretinal Fluid and/or Subretinal Fluid on SD-OCT in the Study Eye.
* BCVA ETDRS score of ≥25 and ≤70 letters (between 20/40 and 20/320 Snellen equivalent) in the Study Eye.
* Diagnosis of active or inactive non-infectious intraocular inflammation, acute or chronic in the Study Eye.

Exclusion Criteria:

* Macular Edema in the Study Eye secondary to diabetic retinopathy, RVO, or wAMD.
* Active or suspected ocular or periocular infection in either eye.
* Any history of or active occlusive retinal vasculitis in either eye.

Where it's running

  • AZ Retina & Vitreous Consultants
    Phoenix, Arizona, United States
    Recruiting
  • Research Network Arizona
    Scottsdale, Arizona, United States
    Recruiting
  • California Retina Consultants (Bakersfield)
    Bakersfield, California, United States
    Recruiting
  • Global Research Management, Inc.
    Glendale, California, United States
    Recruiting
  • UCSD/Jacobs Retina Center
    La Jolla, California, United States
    Recruiting
  • UCLA Stein Eye Institute
    Los Angeles, California, United States
    Recruiting
Show 44 more locations
  • California Retina Consultants (Oxnard)
    Oxnard, California, United States
    Recruiting
  • California Eye Specialists Medical Group, Inc.
    Pasadena, California, United States
    Recruiting
  • California Eye Specialists Medical Group, Inc.
    Redlands, California, United States
    Recruiting
  • Retina Consultants of Southern California
    Redlands, California, United States
    Recruiting
  • Retinal Consultants Medical Group Inc
    Sacramento, California, United States
    Recruiting
  • Rocky Mountain Uveitis
    Denver, Colorado, United States
    Recruiting
  • Coastal Eye Surgeons
    Greenwich, Connecticut, United States
    Recruiting
  • Retina Consultants, PC
    Manchester, Connecticut, United States
    Recruiting
  • Retina Group of New England, PC
    Waterford, Connecticut, United States
    Recruiting
  • Retina Group of Florida (Ft. Lauderdale)
    Fort Lauderdale, Florida, United States
    Recruiting
  • Retina Vitreous Associates of Florida (St. Petersburg)
    St. Petersburg, Florida, United States
    Recruiting
  • Retina Associates, LTD
    Elmhurst, Illinois, United States
    Recruiting
  • Associated Vitreoretinal and Uveitis Consultants LLC
    Carmel, Indiana, United States
    Recruiting
  • Midwest Eye Institute
    Carmel, Indiana, United States
    Recruiting
  • Cumberland Valley Retina Consultants
    Hagerstown, Maryland, United States
    Recruiting
  • Ophthalmic Consultants of Boston
    Boston, Massachusetts, United States
    Recruiting
  • Retina Consultants of Minnesota
    Saint Louis Park, Minnesota, United States
    Recruiting
  • The Retina Institute
    St Louis, Missouri, United States
    Recruiting
  • St. Mary's Eye Surgery Center (Metropolitan Eye Research and Surgery Institute)
    Palisades Park, New Jersey, United States
    Recruiting
  • Retina Associates of New York, P.C.
    New York, New York, United States
    Recruiting
  • North Carolina Retina Associates (Cary)
    Cary, North Carolina, United States
    Recruiting
  • North Carolina Retina Associates (Wake Forest)
    Wake Forest, North Carolina, United States
    Recruiting
  • Ohio State University
    Columbus, Ohio, United States
    Recruiting
  • Cascade Medical Research Institute
    Springfield, Oregon, United States
    Recruiting
  • Erie Retina Research
    Erie, Pennsylvania, United States
    Recruiting
  • Charleston Neuroscience Institute, LLC (Charleston)
    Charleston, South Carolina, United States
    Recruiting
  • Palmetto Retina Center (West Columbia)
    West Columbia, South Carolina, United States
    Recruiting
  • Ophthalmology Ltd
    Sioux Falls, South Dakota, United States
    Recruiting
  • Tennessee Retina PC
    Nashville, Tennessee, United States
    Recruiting
  • Vanderbilt Eye Institute
    Nashville, Tennessee, United States
    Recruiting
  • Retina Research Institute of Texas
    Abilene, Texas, United States
    Recruiting
  • Austin Retina Associates, PLLC (Austin)
    Austin, Texas, United States
    Recruiting
  • Retina Consultants of Texas (Bellaire)
    Bellaire, Texas, United States
    Recruiting
  • Texas Retina Center
    Houston, Texas, United States
    Recruiting
  • Retina Consultants of Texas (Katy)
    Katy, Texas, United States
    Recruiting
  • Texas Retina Associates (Plano)
    Plano, Texas, United States
    Recruiting
  • Austin Retina Associates, PLLC (Round Rock)
    Round Rock, Texas, United States
    Recruiting
  • Retina Consultants of Texas (San Antonio)
    San Antonio, Texas, United States
    Recruiting
  • Retina Consultants of Texas (Woodlands)
    The Woodlands, Texas, United States
    Recruiting
  • Pacific Northwest Retina (Bellevue)
    Bellevue, Washington, United States
    Recruiting
  • Pacific Northwest Retina (Silverdale)
    Silverdale, Washington, United States
    Recruiting
  • Eye Clinic of Wisconsin
    Wausau, Wisconsin, United States
    Recruiting
  • Centro Oftalmologico Metropolitano
    San Juan, Puerto Rico
    Recruiting
  • Stanford Byers Eye Institute
    Palo Alto, California, United States
    Not yet recruiting

+6 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.