Intravitreal Bevacizumab for Proliferative Diabetic Retinopathy

March 12, 2007 updated by: Yonsei University

Histologic Changes of Fibrovascular Membrane Associated With Proliferative Diabetic Retinopathy After Intravitreal Bevacizumab (Avastin®)

Recently, intravitreal bevacizumab (Avastin) injection has gained popularity as a potential treatment of intraocular neovascularization (CNV) associated with age related macular degeneration and diabetic retinopathy. The efficacy of the drug is thought to be related with its pharmacologic blockade of VEGF.

The purpose of this study is to determine the effect of the intravitreal bevacizumab on the fibrovascular membrane associated with proliferative diabetic retinopathy by objective histologic evaluation.

The patients scheduled for vitrectomy for tractional fibrovascular membrane due to proliferative diabetic retinopathy will be randomized into two treatment groups. The one will receive conventional vitrectomy and the other group will receive intravitreal bevacizumab injection one week before the scheduled vitrectomy. The fibrovascular membrane will be excised during surgery and fixated for histologic examinations. The expression of VEGF and PEDF, a potent inhibitor of angiogenesis, will be evaluated in the fibrovascular membrane by immunohistochemistry. The results will be compared between two treatment groups.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment

20

Phase

  • Not Applicable

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

  • Korea, Republic of
      • Seoul, Korea, Republic of, 120-752
        • Department of Ophthalmology, Yonsei University College of Medicine

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Tractional retinal detachment recently involving the macula with fibrovascular membrane due to proliferative diabetic retinopathy
  • Severe fibrovascular proliferation progressing after appropriate panretinal photocoagulation

Exclusion Criteria:

  • Uncontrolled systemic hypertension
  • Recent history of myocardiac infarction within 6 months
  • Recent history of cerebrovascular accident within 6 months

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: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
expression level of VEFG
PEDG
Factor VIII

Secondary Outcome Measures

Outcome Measure
complication rate

Collaborators and Investigators

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

Sponsor

Yonsei University

Investigators

  • Principal Investigator: Hyoung Jun Koh, Department of Ophthalmology, Yonsei University College of Medicine

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

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

December 1, 2006

Study Completion

March 1, 2007

Study Registration Dates

First Submitted

January 16, 2007

First Submitted That Met QC Criteria

January 16, 2007

First Posted (Estimate)

January 17, 2007

Study Record Updates

Last Update Posted (Estimate)

March 13, 2007

Last Update Submitted That Met QC Criteria

March 12, 2007

Last Verified

January 1, 2007

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • koh01

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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