- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04731727
Treating Corneal Thinning Conditions With CCL Vario Riboflavin (CXL) (CXL)
May 21, 2021 updated by: Kent Wellish MD
Safety and Effectiveness of the CCL Vario System for Corneal Collagen Cross-Linking in Eyes With Corneal Thinning Conditions
Study is testing the efficacy of treating corneal thinning conditions with Vitamin B2 (Riboflavin) and the application on UV Light.
Study Overview
Status
Not yet recruiting
Conditions
Intervention / Treatment
Detailed Description
Corneal thinning conditions, i.e. keratoconus or ectasia, weaken the cornea which then causes the front of the eye to bulge out.
This results in distorted vision and could eventually result in the need for a cornea transplant.
This study proposes to conclude that saturating the cornea with vitamin B2 (Riboflavin) and then applying 365nm wavelength of Ultra Violet Light will result in the various layers of corneal tissue linking together.
This cross linking results in a stronger cornea which is designed to halt the progression of keratoconus or ectasia.
This treatment is already being successfully used in Europe.
Study Type
Interventional
Enrollment (Anticipated)
600
Phase
- Early Phase 1
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Tony F Sterrett
- Phone Number: 702-932-4265
- Email: tsterrett@wellish.com
Study Contact Backup
- Name: Kent L Wellish, MD
- Phone Number: 702-339-2020
- Email: klwellish@gmail.com
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
12 years and older (Child, Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Presence of central or inferior corneal steepening
- Axial topography consistent with keratoconus, post-surgical ectasia, or pellucid marginal degeneration
- Presence of one or more findings associated with keratoconus or pellucid marginal degeneration, such as:
- Fleischer ring
- Vogt's striae
- Decentered corneal apex
- Munson's sign
- Rizutti's sign
- Apical corneal scarring consistent with Bowman's breaks
- Scissoring of the retinoscopic reflex
- Crab-claw appearance on topography
- Steepest keratometry (Kmax) value > or = 47.20 D
- I-S keratometry difference > 1.5 D on the Orbscan map
- Posterior corneal elevation > 16 microns
- Thinnest corneal point < 485 microns
- Post LASIK/PRK stromal ablation depth < 300 microns or expected keratometry > 47.2 D, or post-PRK/SMILE in keratoconus suspect eyes
- Bacterial or fungal corneal keratitis persistent and not responding despite > 2 weeks of standard antimicrobial therapy or with rapid progression of corneal thinning, with loss of > 25% corneal thickness
- Contact Lens Wearers Only:
- Removal of contact lenses for the required period of time prior to the screening refraction:
Contact Lens Type Minimum Discontinuation Time Soft 1 Week Soft Extended Wear 2 Weeks Soft Toric 3 Weeks Rigid Gas Permeable 2 Weeks per decade of wear
- Signed written informed consent
- Willingness and ability to comply with schedule for follow-up visits
Exclusion Criteria:
- Eyes classified as either normal or atypical normal on the severity grading scheme
- Corneal pachymetry at the screening exam that is < 400 microns at the thinnest point in the eye(s) to be treated when the transepithelial (isotonic) riboflavin solution alone will be used or < 300 microns when the hypotonic riboflavin will be used.
Previous ocular condition (other than refractive error) in the eye(s) to be treated that may predispose the eye for future complications, for example:
- History of or active corneal disease (e.g., herpes simplex, herpes zoster keratitis, recurrent erosion syndrome, acanthamoeba, etc.)
- Clinically significant corneal scarring in the CXL treatment zone that is not related to keratoconus or, in the investigator's opinion, will interfere with the cross linking procedure
- Pregnancy (including plan to become pregnant) or lactation during the course of the study
- A known sensitivity to study medications
- Patients with nystagmus or any other condition that would prevent a steady gaze during the CXL treatment or other diagnostic tests
- Patients with a current condition that, in the physician's opinion, would interfere with or prolong epithelial healing
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Cross linking treatment for corneal thinning
Cornea will be saturated with Vitamin B2 (Riboflavin) and then treated with 365 nm wavelength ultra violet light.
|
Corneal cross linking achieved by combination of Riboflavin and ultraviolet light
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in Best Corrected Visual Acuity
Time Frame: Baseline and 1 year
|
Use a standard eye chart to determine changes in the subject's best Visual Acuity (with glasses or contact) performed by research staff
|
Baseline and 1 year
|
Change in Uncorrected Visual Acuity
Time Frame: Baseline and 1 year
|
Use a standard eye chart to determine changes in the subject's best Visual Acuity (without glasses or contact) performed by clinic technician
|
Baseline and 1 year
|
Occurrence of Adverse Events
Time Frame: Through study completion, an average of 1 year
|
Surgeon notes any occurrence of adverse events related to the treatment
|
Through study completion, an average of 1 year
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Kent L Wellish, MD, Wellish Vision Institute
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Anticipated)
June 30, 2021
Primary Completion (Anticipated)
December 1, 2026
Study Completion (Anticipated)
December 1, 2026
Study Registration Dates
First Submitted
January 21, 2021
First Submitted That Met QC Criteria
January 28, 2021
First Posted (Actual)
February 1, 2021
Study Record Updates
Last Update Posted (Actual)
May 25, 2021
Last Update Submitted That Met QC Criteria
May 21, 2021
Last Verified
May 1, 2021
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 0000 (Centre for care Science, KI, Norrbacka Eugeniastiftelsen)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
No
IPD Plan Description
Unidentifiable patient data and pre- and post-op results will be shared.
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
product manufactured in and exported from the U.S.
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
Clinical Trials on Keratoconus, Unstable
-
The Cleveland ClinicUniversity of MarylandEnrolling by invitationKeratoconus | Keratoconus, Unstable | Keratoconus, StableUnited States
-
Comprehensive EyeCare of Central OhioGlaukos CorporationCompleted
-
Eye Hospital Pristina KosovoActive, not recruitingKeratoconus | Keratoconus of Right Eye | Keratoconus, Unstable, Right EyeKosovo
-
Eye Specialists of IndianaRecruitingKeratoconus, Unstable | Bacterial Keratitis | Ectasia CornealUnited States
-
Pacific Clear Vision InstituteRecruitingKeratoconus, Unstable | Bacterial Keratitis | Ectasia of CorneaUnited States
-
Sight Medical Doctors PLLCOcular Therapeutix, Inc.CompletedPostoperative Pain | Keratoconus, Unstable | Collagen CrosslinkingUnited States
-
Tianjin Eye HospitalRecruitingScansys, Pentacam, Keratoconus, Subclinical KeratoconusChina
-
Tianjin Eye HospitalActive, not recruitingScansys, Pentacam, Corvis ST, Keratoconus, Subclinical KeratoconusChina
-
Heba Allah Nashaat MohamedAssiut UniversityRecruitingKeratoconus, CollagenEgypt
-
Kasr El Aini HospitalUnknownProgressive KeratoconusEgypt
Clinical Trials on Riboflavin
-
Instituto de Oftalmología Fundación Conde de ValencianaUnknownKeratoconus | CrosslinkingMexico
-
University of UlsterDSM Nutritional Products, Inc.Enrolling by invitationHypertension | Blood PressureUnited Kingdom
-
Price Vision GroupRecruitingKeratoconus | Ectasia CornealUnited States
-
Cornea and Laser Eye InstituteActive, not recruitingKeratoconus | Corneal EctasiaUnited States
-
Glaukos CorporationWithdrawn
-
DSM Nutritional Products, Inc.CompletedGut MicrobiotaNetherlands
-
Region SkaneActive, not recruiting
-
Price Vision GroupCornea Research Foundation of AmericaRecruitingCorneal NeovascularizationUnited States
-
Cornea and Laser Eye InstituteActive, not recruitingKeratoconus | Corneal EctasiaUnited States
-
University of UlsterDSM Nutritional Products, Inc.UnknownParticipants With the MTHFR 677TT GenotypeUnited Kingdom