Observational Registry to Assess the Durability of Effect of CXL in Patients With Corneal Ectasia After Refractive Surgery (CXL)

February 22, 2024 updated by: Glaukos Corporation

A Phase IV Observational Registry to Assess the Safety and Durability of Effect of Corneal Collagen Cross-linking With Photrexa Viscous, Photrexa, and the KXL System in Patients With Corneal Ectasia Following Refractive Surgery

The objectives of this post market registry are to evaluate the safety and durability of treatment effect up to 3 years following cross-linking performed with Photrexa Viscous (riboflavin 5'- phosphate in 20% dextran ophthalmic solution), Photrexa (riboflavin 5'- phosphate ophthalmic solution), and the KXL System in patients with corneal ectasia following refractive surgery.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Approximately 200 patients who are planning to undergo or have undergone CXL for the treatment of corneal ectasia following refractive surgery in one or both eyes according to the prescribing information in the Photrexa Viscous and Photrexa Package Insert could be enrolled. Patients will be followed for safety and effectiveness at Months 3, 6, 12, 24 and 36 following cross-linking treatment.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
200

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

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • California
      • Palo Alto, California, United States, 94303
        • Recruiting
        • Stanford University School of Medicine
        • Contact:
        • Principal Investigator:
          • Edward Manche, MD
    • Minnesota
      • Bloomington, Minnesota, United States, 55420
        • Recruiting
        • Chu Vision Institute, P.A.
        • Contact:
        • Principal Investigator:
          • Ralph Chu, MD
    • Montana
      • Bozeman, Montana, United States, 59718
    • North Dakota
      • W. Fargo, North Dakota, United States, 58078
    • Ohio
      • Westerville, Ohio, United States, 43082
        • Recruiting
        • Comprehensive EyeCare of Central Ohio
        • Contact:
        • Principal Investigator:
          • Kenneth Beckman, MD
    • Pennsylvania
      • Bala-Cynwyd, Pennsylvania, United States, 19004
        • Recruiting
        • Vantage Eye Care, LLC
        • Contact:
        • Principal Investigator:
          • Brandon Ayres, MD
    • South Carolina
      • Ladson, South Carolina, United States, 29456
        • Recruiting
        • Carolina Cataract & Laser Center
        • Contact:
        • Principal Investigator:
          • David Vroman, MD
    • Texas
      • Houston, Texas, United States, 77027
        • Recruiting
        • Slade & Baker Vision
        • Contact:
        • Principal Investigator:
          • Stephen Slade, MD
    • Utah
      • Draper, Utah, United States, 84020
        • Recruiting
        • Hoopes Vision
        • Contact:
        • Principal Investigator:
          • Majid Moshirfar, md
    • Virginia
      • McLean, Virginia, United States, 22102
        • Recruiting
        • See Clearly Vision Group
        • Contact:
        • Principal Investigator:
          • Christine Tagayun, MD
    • Washington
      • Seattle, Washington, United States, 98133
        • Recruiting
        • Northwest Eye Surgeons
        • Contact:
        • Principal Investigator:
          • Audrey Rostov, MD

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients with corneal ectasia following refractive surgery who are planning to undergo or have undergone corneal collagen cross-linking in one or both eyes according to the Photrexa Viscous and Photrexa prescribing information.

Description

Inclusion Criteria:

  1. Be at least 18 years of age, male or female, of any race;
  2. Provide written informed consent and sign a HIPAA form;
  3. Willingness and ability to follow all instructions and comply with schedule for study visits;
  4. Have a diagnosis of corneal ectasia post-refractive surgery (such as LASIK, PRK);
  5. Planning to undergo (or have undergone within the past 90 days) corneal collagen cross-linking with PHOTREXA VISCOUS/ PHOTREXA and the KXL System, per the prescribing information (NOTE: Complete treatment and follow-up data, including any product-related events at time of procedure through the time of enrollment must be available);
  6. For females capable of becoming pregnant, agree to have urine pregnancy testing performed prior to enrolling in the registry; must not be pregnant or lactating.

Exclusion Criteria:

  1. If female, be pregnant, nursing, or have a positive urine pregnancy test prior to enrollment in the registry;
  2. The Investigator may exclude or discontinue any patient for any sound medical reason.

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
CXL Group
Patients with corneal ectasia following refractive surgery who had corneal collagen cross-linking in one or both eyes according to the Photrexa Viscous and Photrexa prescribing information
Combination product: Corneal Collagen Cross-linking
Photrexa Viscous (riboflavin 5'-phosphate in 20% dextran ophthalmic solution), Photrexa (riboflavin 5'-phosphate ophthalmic solution), and the KXL System (UV Irradiation).

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Kmax
Time Frame: 36 months
Change from pretreatment baseline in maximum corneal curvature
36 months
BCVA
Time Frame: 36 month
Change from pretreatment baseline in BCVA
36 month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Glaukos Corporation

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Kerry Stephens, Glaukos Corporation

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 4, 2017

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 20, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 20, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 24, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 23, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 22, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • ACP-KXL-401

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

Yes

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.

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