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Randomized Study of Photodynamic Therapy Using Dihematoporphyrin in Patients With Corneal Neovascularization

The recruitment status of this study is unknown because the information has not been verified recently.
Verified August 2000 by FDA Office of Orphan Products Development.
Recruitment status was  Recruiting
Eastern Virginia Medical School
Information provided by:
FDA Office of Orphan Products Development Identifier:
First received: October 18, 1999
Last updated: June 23, 2005
Last verified: August 2000


I. Demonstrate the safety and efficacy of dihematoporphyrin derivative (DHP) in laser photodynamic therapy (PDT) in patients with corneal neovascularization.

II. Document the histopathologic mechanism of action in selected patients undergoing penetrating keratoplasty following PDT therapy for corneal neovascularization.

III. Facilitate FDA product approval of DHP as a photosensitizing agent for laser treatment in these patients.

IV. Explore the use of this photosensitizer for ocular and cutaneous basal cell and squamous cell carcinoma.

Condition Intervention
Corneal Neovascularization
Drug: Dihematoporphyrin derivative
Drug: prednisolone
Procedure: Laser surgery

Study Type: Interventional
Study Design: Allocation: Randomized
Primary Purpose: Treatment

Further study details as provided by FDA Office of Orphan Products Development:

Estimated Enrollment: 150
Study Start Date: October 1999
Detailed Description:


This is a randomized, placebo controlled study.

Patients are randomized to 1 of 3 treatment arms:

Arm I: Patients receive topical dihematoporphyrin derivative (DHP) every 3 hours on days -3 and -2. Patients undergo laser surgery on day 0. After photodynamic (PDT) therapy, patients receive topical prednisolone phosphate four times a day for 90 days. Ninety days following PDT, patients may undergo corneal transplantation.

Arm II: Patients receive placebo topical gel and undergo sham laser surgery following arm I schedule, then receive topical prednisolone phosphate four times a day for 90 days. Patients may be crossed over to arm I if disease progression is observed.

Arm III: Patients receive a compressed 1 day schedule of DHP with 5 doses in the morning and then undergo laser surgery in the evening.

Patients are assessed on days 1, 7, 30, and 90 after PDT therapy.


Ages Eligible for Study:   12 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
  • Histologically proven corneal neovascularization (CNV): Must have at least 1 quadrant of significant CNV, which is due to bacterial, viral, parasitic, or fungal keratitis; alkaline acid or hydrocarbon chemical burns; ocular trauma and injury; severe ocular surface disease; or previous surgery with complications such as corneal allograft rejection are eligible
  • No concurrent systemic steroids
  • No concurrent immunosuppressive therapy
  • Not pregnant or nursing; Negative pregnancy test; Fertile patients must use effective contraception; HIV negative; No rheumatoid arthritis; No congenital corneal scars; No active ocular infection or inflammation; No other active systemic collagen vascular disease; No uncontrolled glaucoma; No history of porphyrin allergies; Visual acuity of 20/400 or better in contralateral eye
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00004430

United States, Virginia
Eastern Virginia Medical School Recruiting
Norfolk, Virginia, United States, 23507
Contact: John D. Sheppard    757-622-2200      
Sponsors and Collaborators
Eastern Virginia Medical School
Study Chair: John D. Sheppard Eastern Virginia Medical School
  More Information

Sheppard JD, Chames MA, Clarke KC, et al.: Argon laser photodynamic thrombosis of human corneal neovascularization utilizing intravenous dihematoporphyrin. Investigative Ophthalmology and Visual Science 35(4): 1350, 1994.
Chames MA, Sheppard JD, Mittal DC, et al.: A rabbit model for argon laser photodynamic therapy of corneal neovascularization utilizing topical dihematoporphyrin. Investigative Ophthalmology and Visual Science 36(1): 146, 1995.
Mittal DC, Chames MS, Sheppard JD, et al.: Distribution of dihematoporphyrin in rabbit cornea, iris, aqueous humor and plasma after topical intravenous administration. Investigative Ophthalmology and Visual Science 36(13): 2564, 1995.
Lattanzio F, Rusch A, Sheppard J, et al.: Documentation of corneal neovascularization by quantitative video fluorescein angiography. Investigative Ophthalmology and Visual Science 37: S546, 1996.
Cox KW, Sheppard JD, Lattanzio FA, et al.: Photodynamic therapy of corneal neovascularization using topical dihematoporphyrin ester. Investigative Ophthalmology and Visual Science 38: S512, 1997.
Williams PB, Sheppard JD, Chames MA, et al.: Distribution of dihematoporphyrin in rabbit cornea, iris, aqueous humor and serum after topical vs intravenous administration. Journal of Clinical Pharmacology 35(10): 936, 1995. Identifier: NCT00004430     History of Changes
Other Study ID Numbers: 199/13380, EVMS-FDR001020
Study First Received: October 18, 1999
Last Updated: June 23, 2005
Health Authority: United States: Federal Government

Keywords provided by FDA Office of Orphan Products Development:
cardiovascular and respiratory diseases
corneal neovascularization
rare disease

Additional relevant MeSH terms:
Corneal Neovascularization
Neovascularization, Pathologic
Corneal Diseases
Eye Diseases
Pathologic Processes processed this record on March 03, 2015