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Clinical Trial Summary

To determine the effect of subconjunctival Bevacizumab in corneal neovascularization


Clinical Trial Description

Corneal transplantation is the most commonly performed transplant surgery in the world today. Immunologic rejection is the leading cause of graft failure, with about 25% of graft recipients experiencing at least one episode of rejection. Of these episodes, about 20% are irreversible. The rate of corneal graft rejection in high-risk eyes, such as corneal neovascularization, has been reported to be 50% to 70%. Vascularized corneas have a much higher rate of graft rejection than avascular corneas. Whereas the normal cornea is devoid of blood and lymphatic vessels, both can invade the cornea secondary to a variety of corneal diseases and after surgery. This not only reduces visual acuity, but also renders such a cornea high-risk, if subsequent corneal transplantation is performed.Anti-angiogenesis, the pharmacologic inhibition of new blood vessel growth and formation, is a new treatment strategy under active and vigorous investigation. Multiple growth factors have been shown to contribute to the molecular events involved in the regulation of blood vessel growth Similarly, it is assumed that angiogenic growth factors such as vascular endothelial growth factor (VEGF), considered a major pro-angiogenic factor, could play a role in the pathogenesis of neovascularization.

Several approaches can be taken to neutralize VEGF. Bevacizumab (Avastin) is a full-length humanized murine monoclonal antibody against the VEGF molecule.It binds to and inhibits the biologic activity of human VEGF preventing the interaction of this molecule to its receptors on the surface of endothelial cells. The interaction of VEGF with its receptors leads to endothelial cell proliferation and new vessel formation.

There is evidence that triamcinolone acetonide (TA) inhibits vasogenic edema and inflammation, decreases vascular leakage, reduces the secretion of VEGF by pigment epithelial cells during oxidative stress and, down-regulates the expression of the VEGF gene in vascular smooth muscle cells Furthermore, TA decreases the paracellular permeability of cultured epithelial cells and down-regulates the inflammatory expression of endothelial adhesion molecules. ;


Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00555594
Study type Interventional
Source Asociación para Evitar la Ceguera en México
Contact
Status Completed
Phase Phase 2/Phase 3
Start date September 2006
Completion date October 2007

See also
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Completed NCT01257750 - Treatment of Corneal Neovascularization With Topical Pazopanib Phase 1/Phase 2
Recruiting NCT04787471 - Corneal Crosslinking for Treatment of Corneal Neovascularization Phase 2/Phase 3
Not yet recruiting NCT06412718 - Validation of Human Drugs Target of Repurposed Drugs and Novel Therapies
Active, not recruiting NCT00992849 - Bevacizumab for the Treatment of Corneal Neovascularization Phase 2
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Terminated NCT02797704 - Subconjunctival Aflibercept (EYLEA®) for the Treatment of Corneal Neovascularization Phase 1/Phase 2
Terminated NCT01868360 - Using Aflibercept Injection to Treat Blood Vessel Growth Over the Cornea Phase 1
Withdrawn NCT02042027 - Subconjunctival IVIg (Gamunex-C) Injection for Corneal Neovascularization and Inflammatory Conditions Phase 1
Recruiting NCT04215393 - An Exploratory Clinical Trial Evaluating the Tolerability and Efficacy of KH906 in Patients With Corneal Neovascularization Phase 1
Completed NCT00797303 - The Effect of Bevacizumab on Corneal Neovascularization Phase 4
Recruiting NCT05659940 - Correlation Between a Novel Subset of Neutrophil and Corneal Neovascularization.
Completed NCT00559936 - Topical Avastin for Treatment of Corneal Neovascularization Phase 1
Completed NCT01072357 - Safety and Efficacy of Bevacizumab in High-Risk Corneal Transplant Survival Phase 1/Phase 2
Recruiting NCT04620109 - Clinical Evaluation of Safety and Tolerability of KDR2-2 Eye Drops in Healthy Volunteers With Pharmacokinetic Assessment Phase 1
Completed NCT00512876 - Effectiveness and Safety of Topical Bevacizumab (Avastin) for Treatment of Corneal Neovascularization N/A
Recruiting NCT05011916 - The Safety and Efficacy of KDR2-2 Suspension Eye Drops in the Treatment of Corneal Neovascularization Phase 1/Phase 2
Completed NCT01996826 - A Multi-Center Study of the Safety and Efficacy of Bevacizumab in High-Risk Corneal Transplant Survival Phase 1/Phase 2
Terminated NCT00915590 - Topical IL-1-Ra for Treatment of Corneal Neovascularization Phase 1/Phase 2