A Study to Evaluate the Safety and Efficacy of K-321 Eye Drops After Descemetorhexis in Participants With Fuchs Endothelial Corneal Dystrophy (FECD)

NCT ID: NCT05795699

Last Updated: 2025-06-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE3

Total Enrollment

107 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-03-30

Study Completion Date

2026-03-31

Brief Summary

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A study to assess the safety and efficacy of K-321 in participants with FECD after descemetorhexis.

Detailed Description

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Conditions

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Fuchs Endothelial Corneal Dystrophy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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K-321

K-321 ophthalmic solution four times daily (QID) for 12 weeks followed by a two-week gradual dose taper phase and 38-week follow-up phase

Group Type EXPERIMENTAL

Ripasudil

Intervention Type DRUG

K-321 ophthalmic solution

Placebo

Placebo ophthalmic solution QID for 12 weeks followed by a two-week gradual dose taper phase and 38-week follow-up phase

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Placebo ophthalmic solution

Interventions

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Ripasudil

K-321 ophthalmic solution

Intervention Type DRUG

Placebo

Placebo ophthalmic solution

Intervention Type DRUG

Other Intervention Names

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K-321

Eligibility Criteria

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Inclusion Criteria

* Is at least 18 years old at the screening visit (Visit 1)
* Has a diagnosis of FECD at Visit 1

Exclusion Criteria

* Is a female patient of childbearing potential and any of the following is true:

1. is pregnant or lactating/breastfeeding, or
2. is not surgically sterile, not post-menopausal (no menses for the previous 12 months), or not practicing an effective method of birth control as determined by the Investigator (eg, oral contraceptives, double barrier methods, hormonal injectable or implanted contraceptives, tubal ligation, or partner with vasectomy)
* Has a study eye with a history of cataract surgery within 90 days of Visit 1
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Kowa Research Institute, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Shona Pendse, MD, MMSc

Role: STUDY_CHAIR

Kowa Pharma Development Co.

Locations

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Keck Hospital of USC

Los Angeles, California, United States

Site Status

Macy Eye Center

Los Angeles, California, United States

Site Status

Jules Stein Eye Institute

Los Angeles, California, United States

Site Status

Byers Eye Institute at Stanford

Palo Alto, California, United States

Site Status

Sacramento Eye Consultants

Sacramento, California, United States

Site Status

Gorovoy MD Eye Specialists

Fort Myers, Florida, United States

Site Status

University of Florida

Gainesville, Florida, United States

Site Status

Bascom Palmer Eye Institute

Miami, Florida, United States

Site Status

Bascom Palmer Eye Institute - Naples

Naples, Florida, United States

Site Status

Eye Consultants of Atlanta

Atlanta, Georgia, United States

Site Status

Grene Vision Group

Wichita, Kansas, United States

Site Status

University of Kentucky

Lexington, Kentucky, United States

Site Status

Massachusetts Eye and Ear Infirmary

Boston, Massachusetts, United States

Site Status

W Kellogg Eye Center

Ann Arbor, Michigan, United States

Site Status

Verdier Eye Center

Grand Rapids, Michigan, United States

Site Status

Vance Thompson Vision - Omaha

Omaha, Nebraska, United States

Site Status

Eye Associates of New Mexico

Albuquerque, New Mexico, United States

Site Status

NYU Langone Health

New York, New York, United States

Site Status

Vance Thompson Vision West Fargo

West Fargo, North Dakota, United States

Site Status

University Hospitals Cleveland Medical Center - 11100 Euclid Ave

Cleveland, Ohio, United States

Site Status

Devers Eye Institute

Portland, Oregon, United States

Site Status

Casey Eye Institute - OHSU

Portland, Oregon, United States

Site Status

University of Texas Southwestern Medical Center

Dallas, Texas, United States

Site Status

Houston Eye Associates

Houston, Texas, United States

Site Status

R and R Eye Research, LLC.

San Antonio, Texas, United States

Site Status

University of Wisconsin - 2870 University Ave

Madison, Wisconsin, United States

Site Status

Dr. Greg Moloney

Vancouver, British Columbia, Canada

Site Status

Prism Eye Institute - Mississauga-Oakville

Oakville, Ontario, Canada

Site Status

Precision Cornea Centre

Ottawa, Ontario, Canada

Site Status

Ottawa Hospital

Ottawa, Ontario, Canada

Site Status

Rigshospitalet Glostrup-Nordre Ringvej 57

Glostrup Municipality, Capital, Denmark

Site Status

Aarhus Universitetshospital

Aarhus N, Central Jutland, Denmark

Site Status

Universitätsklinikum Heidelberg

Heidelberg, Baden-Wurttemberg, Germany

Site Status

Universitätsklinikum Tübingen

Tübingen, Baden-Wurttemberg, Germany

Site Status

Universitatsklinkum Erlangen-Ulmenweg 18

Erlangen, Bavaria, Germany

Site Status

Uniklinik Köln

Cologne, North Rhine-Westphalia, Germany

Site Status

Universitatsklinikum Dusseldorf

Düsseldorf, North Rhine-Westphalia, Germany

Site Status

Universität des Saarlandes

Homburg, Saarland, Germany

Site Status

Universitatsklinikum Leipzig

Leipzig, Saxony, Germany

Site Status

LMU Klinikum der Universität

München, , Germany

Site Status

Hospital Universitario Germans Trias i Pujol

Badalona, Barcelona, Spain

Site Status

Althaia Xarxa Assistencial Universitaria Manresa

Manresa, Barcelona, Spain

Site Status

Hospital Arruzafa

Córdoba, Córdoba, Spain

Site Status

Instituto Oftalmologico Fernandez Vega

Oviedo, Principality of Asturias, Spain

Site Status

Oftalvist - Barcelona

Barcelona, , Spain

Site Status

Institut Catala de Retina (ICR)

Barcelona, , Spain

Site Status

Instituto de Microcirugia Ocular

Barcelona, , Spain

Site Status

The Royal Liverpool University Hospital

Liverpool, Lancashire, United Kingdom

Site Status

Moorfields Eye Hospital

London, London, City of, United Kingdom

Site Status

Royal Victoria Infirmary

Newcastle upon Tyne, Northumberland, United Kingdom

Site Status

Countries

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United States Canada Denmark Germany Spain United Kingdom

Other Identifiers

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K-321-301

Identifier Type: -

Identifier Source: org_study_id

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