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NCT01830790 · ClinicalTrials.gov registry record · Phase 2
Effects of Sildenafil on Choroidal Thickness in AMD
A Phase 2 study, sponsored by Duke University.
- Terminated
- Registry status
- Phase 2
- Development phase
- 10
- Enrollment target
NCT01830790: Clinical Trial Phase 2 study, sponsored by Duke University.
NCT01830790 is a Phase 2 study that was terminated before completion, run by Duke University. The registered enrollment target is 10 participants, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (92% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT01830790, a Phase 2 study, was terminated before completion, sponsored by Duke University.
- TERMINATED
- Registry status
- Phase 2
- Development phase
- 10 participants
- Enrollment target
Study Summary
Choroidal thinning has been hypothesized to partake in the pathogenesis of age-related macular degeneration (AMD), but it is not known if increasing choroidal thickness may potentially alter the disease course. Past studies have shown that a single dose of the phosphodiesterase type-5 inhibitor sildenafil citrate can increase choroidal thickness in young healthy patients. The investigators hypothesize that sildenafil may also increase choroidal thickness in eyes with AMD and perhaps potentially reduce AMD progression. Alternatively, if sildenafil has minimal effect on choroidal thickness in eyes in patients with AMD, such results may suggest that choroidal vascular compliance or stiffness is reduced in this condition. Patients seen at the Duke Eye Center with a diagnosis of AMD or age-matched control subjects with no macular pathology will be administered a single 100mg oral dose of sildenafil citrate (Viagra®; Pfizer), and undergo EDI-OCT imaging before and after treatment. Images obtained will be used to measure choroidal thickness, as well as central macular thickness (CMT) and macular volume (MV). Choroidal thickness changes after a single-dose sildenafil treatment in AMD patients will be compared with age-matched control subjects using standard statistical methods. By also correlating choroidal thickness changes with functional (visual acuity) and anatomical (CMT \& MV) changes, the investigators hope to further their understanding of the choroid's role in aging and AMD pathogenesis. The safety of a single dose of sildenafil citrate will be addressed by excluding any patients with risk factors or using medications that are contraindicated for sildenafil as determined by careful informed consent and a study questionnaire.
Interventions
- DRUG Sildenafil citrate
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 10 participants |
| Start Date | 2013-03 |
| Est. Completion | 2014-05 |
| Phase | Phase 2 |
Why NCT01830790 stopped before completion
NCT01830790 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 10 participants, a relatively small participant target, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (92% lower).
The record links to 0 conditions, and to 1 intervention - of which Sildenafil citrate is the first listed.
NCT01830790 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT01830790 about?
NCT01830790 is a clinical study titled "Effects of Sildenafil on Choroidal Thickness in AMD". Choroidal thinning has been hypothesized to partake in the pathogenesis of age-related macular degeneration (AMD), but it is not known if increasing choroidal thickness may potentially alter the disease course. Past studies have shown that a single dose of the phosphodiesterase type-5 inhibitor sild...
What is the current status of trial NCT01830790?
This trial is currently terminated. It is a Phase 2 study. The enrollment target is 10 participants. The study started on 2013-03. Estimated completion is 2014-05.
What interventions are being tested in trial NCT01830790?
The interventions under investigation include: Sildenafil citrate (DRUG).
Who is sponsoring clinical trial NCT01830790?
This trial is sponsored by Duke University, which has 1,725 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT01830790's enrollment target sits among peer trials
10 1968th of 2000 higher than 12 of 2,000 other Phase 2 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 2 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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