Neovascularization Patterns in Corneal Graft Rejection

March 13, 2017 updated by: Roni Shtein, University of Michigan

Corneal transplantation is the most commonly performed human tissue transplant worldwide. Over 40,000 corneal transplants occur in the US each year. .

This study will determine specific corneal neovascularization (CN) patterns in human corneal allograft recipients to determine the characteristics that worsen the prognosis for graft survival. We will test the hypothesis that specific characteristics of CN are prognostic for corneal allograft rejection.

Study Overview

Status

Completed

Conditions

Detailed Description

The investigators hope to enroll 240 subjects into the study. These patients will be enrolled prior to penetrating keratoplasty. They will be examined by the full protocol preoperatively, and postoperatively at 1 week, 1, 3, 6, 12, 18, and 24 months. During these visits slit lamp biomicroscopy will be used to study CN patterns, and take slit lamp photographs if there is any neovascularization detected, permitting us to develop algorithms of CN characteristics that are predictive for corneal allograft rejection and failure. The corneal tissue removed during these patients' surgeries will be evaluated histopathologically to identify inflammation and neovascularization to confirm and compare to what is seen clinically. There will be two short questionnaires conducted at each visit to assess stress levels.

Study Type

Observational

Enrollment (Actual)

44

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Michigan
      • Ann Arbor, Michigan, United States, 48105
        • Kellogg Eye Center

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

18 years to 99 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

subjects with indications of corneal transplant

Description

Inclusion Criteria:

  • scheduled for corneal transplant

Exclusion Criteria:

  • previous corneal transplant

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

Cohorts and Interventions

Group / Cohort
PKP
Subjects undergoing penetrating keratoplasty

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Corneal graft rejection
Time Frame: 0 to 2 years after transplant
0 to 2 years after transplant

Collaborators and Investigators

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

Sponsor

University of Michigan

Investigators

  • Principal Investigator: Roni Shtein, MD, MS, University Of Michigam Kellogg Eye Center

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

November 1, 2007

Primary Completion (Actual)

December 1, 2015

Study Completion (Actual)

December 1, 2016

Study Registration Dates

First Submitted

September 26, 2012

First Submitted That Met QC Criteria

September 27, 2012

First Posted (Estimate)

September 28, 2012

Study Record Updates

Last Update Posted (Actual)

March 15, 2017

Last Update Submitted That Met QC Criteria

March 13, 2017

Last Verified

March 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Neovasc-6281

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

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 Corneal Transplant

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Japan

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe