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NCT00551148 · ClinicalTrials.gov registry record · Phase 2
A Dose-ranging, Multicenter Polysomnography Trial of PD 0200390 in Adults With Primary Insomnia
A Phase 2 study, sponsored by Pfizer.
- Completed
- Registry status
- Phase 2
- Development phase
- 92
- Enrollment target
NCT00551148: Completed Phase 2 study, sponsored by Pfizer.
NCT00551148 is a Phase 2 study that has completed, run by Pfizer. The registered enrollment target is 92 participants, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (31% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00551148, a Phase 2 study, has completed, sponsored by Pfizer.
- COMPLETED
- Registry status
- Phase 2
- Development phase
- 92 participants
- Enrollment target
Study Summary
The purpose of this study is to further explore an effective dose range of PD0200390 for the treatment of patients with insomnia.
Interventions
- OTHER Placebo
- DRUG PD 0200390
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 92 participants |
| Start Date | 2007-10 |
| Est. Completion | 2008-01 |
| Phase | Phase 2 |
What the finished NCT00551148 record still lists
NCT00551148 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 92 participants, a relatively small participant target, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (31% lower).
The record links to 0 conditions, and to 2 interventions - of which Placebo is the first listed.
NCT00551148 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00551148 about?
NCT00551148 is a clinical study titled "A Dose-ranging, Multicenter Polysomnography Trial of PD 0200390 in Adults With Primary Insomnia". The purpose of this study is to further explore an effective dose range of PD0200390 for the treatment of patients with insomnia.
What is the current status of trial NCT00551148?
This trial is currently completed. It is a Phase 2 study. The enrollment target is 92 participants. The study started on 2007-10. Estimated completion is 2008-01.
What interventions are being tested in trial NCT00551148?
The interventions under investigation include: Placebo (OTHER), PD 0200390 (DRUG).
Who is sponsoring clinical trial NCT00551148?
This trial is sponsored by Pfizer, which has 1,845 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00551148's enrollment target sits among peer trials
92 767th of 2000 higher than 1,230 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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