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Macugen for Histoplasmosis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00272766
Recruitment Status : Terminated
First Posted : January 9, 2006
Last Update Posted : October 27, 2006
Information provided by:
Barnes Retina Institute

Brief Summary:
The purpose of this study is to evaluate the safety and effect on visual acuity of Macugen (pegaptanib sodium) in patients with subfoveal choroidal neovascularization (CNV) secondary to the ocular histoplasmosis syndrome (OHS).

Condition or disease Intervention/treatment Phase
Ocular Histoplasmosis Choroidal Neovascularization Drug: pegaptanib sodium Not Applicable

Detailed Description:

Ocular histoplasmosis is a leading cause of severe and irreversible central vision loss in middle-aged adults living in the central and eastern US. OHS has been associated with the fungus Histoplasma capsulatum, a dimorphic soil mold found in 18 to 20 states in the central and eastern US. Annually, approximately 100,000 people are thought to be at risk of vision loss caused by OHS.

This study will include OHS patients with CNV lesions no larger than 5400 microns in greatest linear diameter with classic or occult CNV extending under the geometric center of the FAZ and best-corrected visual acuity letter score between 20/40-20/200. Twenty four patients will be enrolled and the study will have 2 treatment arms with 12 patients each. The first arm will consist of 12 patients who will receive 0.3 mg of Macugen intravitreally every 6 weeks for one year. The second arm will consist of 12 patients who will receive Photodynamic Therapy (PDT) with Visudyne every 3 months for one year.

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Study Type : Interventional  (Clinical Trial)
Enrollment : 24 participants
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Macugen for Histoplasmosis-An Open-Label, Single-Site, Comparative, Prospective Case Series
Study Start Date : February 2006
Study Completion Date : May 2007

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Histoplasmosis

Primary Outcome Measures :
  1. Visual function measurements, including change from baseline in visual acuity: lesion size: and leakage for one year

Secondary Outcome Measures :
  1. Patients who gain 7 or more letters or patients who lose 8 or more letters from baseline

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Diagnosis of ocular histoplasmosis,
  • Evidence of classic or occult choroidal neovascularization extending under the geometric center of the fovea,
  • Greatest linear diameter of no greater than 5400 microns,
  • Best-corrected visual acuity scores between 20/40-20/200,
  • Ability to give informed consent,
  • Limited child bearing potential and a negative pregnancy test

Exclusion Criteria:

  • Features of any condition other than OHS such as AMD, or pathologic or myopic angioid streaks associated with CNV in the study eye,
  • Area of CNV that is less than 50% of the total lesion not including area of prior laser treatment, previous rip of retinal pigment epithelium,
  • Vitelliform-like lesion,
  • Telangiectasia,
  • Central serous retinopathy,
  • Serous pigment epithelial detachment without CNV,
  • Any significant ocular disease other than CNV that could compromise vision in the study eye, such as amblyopia, glaucoma, optic neuropathy, or diabetic retinopathy,
  • Inability to obtain photographs to document CNV,
  • Presence of atrophy/scar in the center of fovea,
  • Presence of vitreo-retinal traction over the center of the fovea,
  • History of treatment for CNV in the study eye other than non-foveal laser photocoagulation,within 12 weeks prior to enrollment
  • Participation in another clinical trial or use of another investigational new drug within 12 weeks of the full extent of the study treatment,
  • Intraocular surgery within the last two months,
  • Capsulectomy within the last month in the study eye

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00272766

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United States, Missouri
Barnes Retina Institute
St. Louis, Missouri, United States, 63110
Sponsors and Collaborators
Barnes Retina Institute
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Principal Investigator: Gaurav K Shah, MD Barnes Retina Institute

Layout table for additonal information Identifier: NCT00272766     History of Changes
Other Study ID Numbers: 2005-0722
First Posted: January 9, 2006    Key Record Dates
Last Update Posted: October 27, 2006
Last Verified: October 2006
Keywords provided by Barnes Retina Institute:
Ocular histoplasmosis
Photodynamic therapy with Visudyne
Best-corrected visual acuity scores between 20/40-20/200
classic or occult choroidal neovascularization
Additional relevant MeSH terms:
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Choroidal Neovascularization
Neovascularization, Pathologic
Pathologic Processes
Choroid Diseases
Uveal Diseases
Eye Diseases