Study to Evaluate the Safety and Efficacy of CSB-001 Ophthalmic Solution 0.1% in Neurotrophic Keratitis Subjects
- Conditions
- Neurotrophic Keratitis
- Interventions
- Biological: Vehicle Control
- Registration Number
- NCT04909450
- Lead Sponsor
- Claris Biotherapeutics, Inc.
- Brief Summary
This study will enroll subjects with stage 2 or 3 neurotrophic keratitis. Subjects will be randomized in a 1:1 ratio to the CSB-001 investigational treatment arm or vehicle control arm. All subjects will dose with the randomized treatment four times daily for 8 weeks (controlled treatment phase). During the controlled treatment phase, subjects will return to the clinic weekly from Day 0 to Week 8, and again at Week 10. Subjects randomized to the vehicle arm who are not healed will have the opportunity to participate in an open-label uncontrolled treatment phase.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 131
- Subjects with stage 2 (PED) or stage 3 (corneal ulcer) neurotrophic keratitis (NK). Subjects with bilateral NK may enroll in the study but only one eye will be selected as the study eye (worse eye) and be treated with test article.
- Subjects with no clinical evidence of improvement in the PED or corneal ulcer within the 2 weeks prior to study enrollment despite the use of conventional non-surgical treatments for neurotrophic keratitis (e.g., preservative-free artificial tears, gels or ointments; discontinuation of preserved topical drops and medications that can decrease corneal sensitivity; therapeutic contact lenses [either silicone hydrogel or rigid gas permeable]) as determined by the investigator or referring physician's medical record.
- Subjects with clinical evidence of decreased corneal sensitivity within the area of the PED or corneal ulcer and outside of the area of the defect in at least one corneal quadrant in the study eye in the opinion of the investigator assessed with a cotton wisp.
- Pinhole distance visual acuity score ≤ 75 ETDRS letters measured with a LogMAR chart (≥ 0.2 LogMAR, ≤ 20/32 Snellen or worse Snellen or ≤ 0.625 decimal fraction) in the study eye.
- Subjects must have the ability and willingness to comply with study procedures.
- Any active ocular infection (bacterial, viral, fungal, or protozoal) or active ocular inflammation not related to NK in either eye in the opinion of the investigator. Infectious epithelial keratitis including herpetic keratitis (i.e., dendritic lesions or geographic ulcers) in either eye is excluded. Subjects on oral antibiotic at the time of screening are eligible but should continue the medication for the duration of the study.
- Previous use of Oxervate in the study eye with last administration within the past 2 months.
- Any other ocular disease, except glaucoma, that will require topical ocular treatment in the study eye over the course of the study.
- Use of any other topical treatments other than the study medication provided by the Sponsor and allowed by the study protocol can be administered to the study eye over the course of the study. The following are exceptions: a) Allowance for use of preservative-free antibiotic eye drops if prescribed by the investigator and b) Allowance for use of a non-preserved IOP-lowering prostaglandin topical ocular drop administered once-daily (QD) in glaucomatous eyes over the course of the study.
Note: Other inclusion/exclusion criteria apply.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description CSB-001 Investigational Treatment Arm CSB-001 Ophthalmic Solution 0.1% One drop CSB-001 four times daily for 8 weeks in the study eye Vehicle Control Arm Vehicle Control One drop matching vehicle four times daily for 8 weeks in the study eye
- Primary Outcome Measures
Name Time Method Safety as Assessed by Dilated Fundus Examination Screening through Week 10 Change from baseline in observed anomalies of the peripheral retina, macula, choroid, optic nerve and vitreous (cup/disc ratio)
Safety as Assessed by Best-Corrected Distance Visual Acuity Screening through Week 10 Change from baseline using the Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity chart
Efficacy as Assessed by Complete Corneal Healing Week 8 through Week 10 Proportion of subjects achieving complete corneal healing as assessed by the Central Reading Center
Safety as Assessed by Adverse Event Reporting Screening through Week 10 Incidence of ocular and systemic adverse events
Safety as Assessed by Slit-lamp Biomicroscopy Screening through Week 10 Change from baseline in staining using NEI scale (0 = absent to 3 = severe for 5 areas of the cornea) with Grade 0 (no staining) to maximum of Grade 15
Safety as Assessed by Intraocular Pressure Screening through Week 10 Change in baseline in intraocular pressure using the Goldmann tonometry
- Secondary Outcome Measures
Name Time Method Efficacy as Assessed by Corneal Healing Week 1 through Week 10 Time to corneal healing based on assessments by the Central Reading Center
Efficacy as Assessed by Corneal Healing at Week 4 and Week 8 Sustained for Two Weeks Weeks 4 and 8 through Week 10 Proportion of subjects achieving corneal healing at Week 4 and Week sustained for 2 weeks as assessed by the investigator
Efficacy as Assessed by Decrease in Lesion Size Week 1 through Week 10 Time to ≥20% decrease in lesion size (maximum diameter) from baseline assessed by the Central Reading Center
Efficacy as Assessed by Time to Corneal Healing Week 1 through Week 10 Time to corneal healing based on assessments by the investigator
Efficacy as Assessed by Best Corrected Distance Visual Acuity Week 1 through Weeks 4 and 8 Proportion of subjects achieving a ≥15-letter gain in the study eye from baseline in Best Corrected Distance Visual Acuity
Efficacy as Assessed by Corneal Healing at Week 4 Week 1 through Week 4 Proportion of subjects achieving corneal healing at Week 4 assessed by the Central Reading Center
Trial Locations
- Locations (48)
Loma Linda University Eye Institute
🇺🇸Loma Linda, California, United States
Gordon Schanzlin New Vision Institute
🇺🇸San Diego, California, United States
Minnesota Eye Consultants
🇺🇸Minnetonka, Minnesota, United States
Vision Institute
🇺🇸Colorado Springs, Colorado, United States
Global Research Foundation
🇺🇸Los Angeles, California, United States
Corneal Consultants of Colorado
🇺🇸Littleton, Colorado, United States
Cornea and Contact Lens Institute of Minnesota
🇺🇸Edina, Minnesota, United States
Eye Consultants of Atlanta
🇺🇸Atlanta, Georgia, United States
Ophthalmology Associates
🇺🇸Saint Louis, Missouri, United States
Johns Hopkins Hospital
🇺🇸Baltimore, Maryland, United States
Price Vision Group
🇺🇸Indianapolis, Indiana, United States
Scheie Eye Institute
🇺🇸Philadelphia, Pennsylvania, United States
Precision Cornea Centre
🇨🇦Ottawa, Ontario, Canada
UPMC Eye Center
🇺🇸Pittsburgh, Pennsylvania, United States
Metropolitan Eye Research and Surgery Institute
🇺🇸Palisades Park, New Jersey, United States
Duke Eye Center
🇺🇸Durham, North Carolina, United States
The Ohio State University, Department of Ophthalmology and Visual Sciences
🇺🇸Columbus, Ohio, United States
Cornea Consultants of Albany
🇺🇸Slingerlands, New York, United States
Kensington Eye Institute
🇨🇦Toronto, Ontario, Canada
Virginia Eye Consultants
🇺🇸Norfolk, Virginia, United States
UCLA Stein Eye Institute
🇺🇸Los Angeles, California, United States
Stuart A. Terry, MD PA
🇺🇸San Antonio, Texas, United States
University of Colorado - Dept. of Ophthalmology
🇺🇸Aurora, Colorado, United States
International Research Center
🇺🇸Tampa, Florida, United States
LoBue Laser and Eye Medical Center, Inc.
🇺🇸Murrieta, California, United States
Eye Care North
🇺🇸Cave Creek, Arizona, United States
Nvision Clinical Research, LLC
🇺🇸Los Angeles, California, United States
California Eye Specialists Medical Group Inc.
🇺🇸Pasadena, California, United States
Martel Eye Medical Group
🇺🇸Rancho Cordova, California, United States
Atlantis Eyecare
🇺🇸Torrance, California, United States
Bascom Palmer Eye Institute at Palm Beach Gardens
🇺🇸Palm Beach, Florida, United States
Bowden Eye and Associates
🇺🇸Jacksonville, Florida, United States
Midwest Cornea Associates, LLC
🇺🇸Carmel, Indiana, United States
Cincinnati Eye Institute
🇺🇸Edgewood, Kentucky, United States
SightMD
🇺🇸Babylon, New York, United States
Eye Consultants of North Dakota
🇺🇸Fargo, North Dakota, United States
Hazleton Eye Specialists
🇺🇸Hazle Township, Pennsylvania, United States
Vance Thompson Vision
🇺🇸Sioux Falls, South Dakota, United States
International Eye Associates, PA
🇺🇸Ormond Beach, Florida, United States
Tufts Medical Center
🇺🇸Boston, Massachusetts, United States
BLINK Research Center, LLC
🇺🇸Memphis, Tennessee, United States
Carolina Cataract & Laser Center
🇺🇸Ladson, South Carolina, United States
Devers Eye Institute
🇺🇸Portland, Oregon, United States
Dr. Gregory Moloney
🇨🇦Vancouver, British Columbia, Canada
Advanced Research
🇺🇸Boynton Beach, Florida, United States
Tauber Eye Center
🇺🇸Kansas City, Missouri, United States
University of Texas at Austin; The Mitchel and Shannon Wong Eye Institute
🇺🇸Austin, Texas, United States
Kentucky Eye Institute
🇺🇸Lexington, Kentucky, United States