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NCT00001736 · ClinicalTrials.gov registry record · Phase 1
New Cysteamine Eye Drops Formulation to Treat Corneal Crystals in Cystinosis
A Phase 1 study, sponsored by National Eye Institute (NEI).
- Completed
- Registry status
- Phase 1
- Development phase
- 51
- Enrollment target
NCT00001736: Completed Phase 1 study, sponsored by National Eye Institute (NEI).
NCT00001736 is a Phase 1 study that has completed, run by National Eye Institute (NEI). The registered enrollment target is 51 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (15% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00001736, a Phase 1 study, has completed, sponsored by National Eye Institute (NEI).
- COMPLETED
- Registry status
- Phase 1
- Development phase
- 51 participants
- Enrollment target
Study Summary
This study will evaluate the safety and effectiveness of a new formulation of eye drops used to treat cystine crystals that form in the corneas of patients with cystinosis. Cystinosis is an inherited disease caused by a defective enzyme, in which excessive amounts of the amino acid cystine accumulate in the body. Among others, symptoms include poor growth and development of kidney failure. In addition, after 10 to 20 years, the cornea-the outside covering of the eye over the iris and pupils-becomes so packed with cystine crystals that small, painful breaks may develop. This corneal condition is treated with cysteamine eye drops. This study is designed to provide additional information about this medication that the Food and Drug Administration requires before approving it for marketing. The study will examine, in two separate but simultaneous investigations, the safety and effectiveness of a new cysteamine formulation. In both studies, before treatment begins, patients will have a complete eye examination, and photographs of the eye will be taken using a bright flash. Safety Study Children and adults currently enrolled in a cystinosis study at the National Institutes of Health may participate in this trial. They will receive the current cysteamine formulation in one eye and the new preparation in the other eye. The drops will be given every hour during waking hours. Patients will be observed daily for the first week of treatment and will be called at 2 weeks and 4 weeks to check on side effects, if any. At 6 months, they will undergo a repeat eye examination. Patients (or their parents) will keep a daily diary recording the condition of each eye. Effectiveness Study Children and adults from Ann Arbor, Michigan, LaJolla, California, and the NEI clinic may be enrolled in this study. Participants will receive medication as described above for the safety trial. They will be observed daily for the first week and will have repeat eye examinations, including photograp
Interventions
- DRUG Cysteamine
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 51 participants |
| Start Date | 1998-05 |
| Est. Completion | 2001-03 |
| Phase | Phase 1 |
What the finished NCT00001736 record still lists
NCT00001736 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 51 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (15% lower).
The record links to 0 conditions, and to 1 intervention - of which Cysteamine is the first listed.
NCT00001736 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00001736 about?
NCT00001736 is a clinical study titled "New Cysteamine Eye Drops Formulation to Treat Corneal Crystals in Cystinosis". This study will evaluate the safety and effectiveness of a new formulation of eye drops used to treat cystine crystals that form in the corneas of patients with cystinosis. Cystinosis is an inherited disease caused by a defective enzyme, in which excessive amounts of the amino acid cystine accumulat...
What is the current status of trial NCT00001736?
This trial is currently completed. It is a Phase 1 study. The enrollment target is 51 participants. The study started on 1998-05. Estimated completion is 2001-03.
What interventions are being tested in trial NCT00001736?
The interventions under investigation include: Cysteamine (DRUG).
Who is sponsoring clinical trial NCT00001736?
This trial is sponsored by National Eye Institute (NEI), which has 221 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00001736's enrollment target sits among peer trials
51 969th of 2000 higher than 1,028 of 2,000 other Phase 1 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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