A Pilot Study of a Sustained-Release Cyclosporine A Implant for Uveitis
Cyclosporin A Implant
Pathologic Processes+3
+ Pathological Conditions, Signs and Symptoms
+ Uveal Diseases
Treatment Study
Summary
Study start date: May 1, 1998
Actual date on which the first participant was enrolled.Sight threatening uveitis may require long term use of systemic immunosuppressants. In some patients, aggressive systemic immunosuppressive therapy fails to control inflammation and can lead to serious side effects. Oral Cyclosporin A (CsA) has been shown in several human trials to be effective in treating chronic uveitis. This pilot study will assess the safety, and to some extent efficacy, of a novel intraocular CsA release implant in patients with active inflammation and poor visual acuity in one eye despite immunosuppressant therapy. Patients will be randomly assigned to receive in one eye a 1 or 2 mg CsA implant releasing at either 0.8 microgram per day or 1.4 microgram per day respectively. The main purpose of the study is to assess the safety of the CsA implant. Secondary outcomes will include a change from baseline in the ocular inflammation, visual acuity, and the need for concomitant anti-inflammatory medications.
Protocol
This section provides details of the study plan, including how the study is designed and what the study is measuring.10 patients to be enrolled
Total number of participants that the clinical trial aims to recruit.Treatment Study
Eligibility
Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.Any sex
Biological sex of participants that are eligible to enroll.Healthy volunteers not allowed
If individuals who are healthy and do not have the condition being studied can participate.Conditions
Pathology
Criteria
INCLUSION CRITERIA: Age range: 15 or older. Active non-infectious intermediate, posterior or panuveitis present for at least 6 months despite systemic immunosupressive therapy including at least 20 mg of oral prednisone or use of another immunosuppressive agent. Visual acuity worse than 20/80 (55 letters) and better than 5/200 (4 letters) in the eye to receive the CsA implant, and better than 20/80 (54 letters) in the non-study eye. Bilateral or unilateral uveitis with active inflammation in one eye only (eye to be implanted). Patients may continue systemic immunosuppressants with the exception of systemic CsA. Patients may not take greater than 1 drop of topical steroid four times a day in the eye to be implanted for maintenance of anterior segment inflammation after 1 month postoperatively. Recordable electroretinogram (ERG). Willingness and the ability, with assistance of a care giver, if necessary, to comply with treatment and follow-up procedures. The ability to understand and sign an informed consent form which must be obtained prior to treatment. Negative serum pregnancy test (females of childbearing potential only). Normal serum creatinine (males 0.9 - 1.4 mg/dL, females 0.7 - 1.3 mg/dL). No current or past history of retinal detachment. EXCLUSION CRITERIA: Current or past history of retinal detachment. Pregnant or lactating patients or patients with potential for conception unless using effective contraception. Fertile males must use effective contraception. Contraception would no longer be mandatory for participation in this study at three months postoperatively assuming (1) negligible CsA absorption, (2) patient is not taking any other medications that may affect a developing fetus or spermatogenesis. Patients who received therapy within the previous one week with any nephrotoxic drugs. Patients having a known allergy to CsA. Patients receiving current therapy with CsA. Patients need to be off of systemic CsA seven days prior to implant surgery. Patients may continue other immunosuppressive therapies if needed to control inflammation in contralateral (non-study) eye provided the inflammation is currently not active.
Study Centers
These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.This study has 1 location