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NCT00108667 · ClinicalTrials.gov registry record · Phase 2
Talampanel to Treat Parkinson's Disease
A Phase 2 study, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
- Completed
- Registry status
- Phase 2
- Development phase
- 40
- Enrollment target
NCT00108667: Completed Phase 2 study, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
NCT00108667 is a Phase 2 study that has completed, run by National Institute of Neurological Disorders and Stroke (NINDS). The registered enrollment target is 40 participants, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (70% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00108667, a Phase 2 study, has completed, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
- COMPLETED
- Registry status
- Phase 2
- Development phase
- 40 participants
- Enrollment target
Study Summary
This study will evaluate the effects of the experimental drug talampanel on dyskinesias (involuntary movements) that develop in patients with Parkinson's disease as a result of long-term treatment with levodopa (Sinemet). The drug will be tested alone and in combination with amantadine-a drug commonly used to alleviate dyskinesias. Patients between 21 and 80 years of age with Parkinson's disease and dyskinesias may be eligible for this study. Screening and baseline evaluation. Participants are evaluated with a medical history, physical and neurologic examinations, blood and urine tests, electrocardiogram (EKG) and pregnancy test, if applicable. A chest x-ray and MRI or CT scan of the brain are done if needed. Patients stop taking all antiparkinsonian medications for one month (2 months if taking Selegiline) before the study begins and throughout its duration, except for certain medicines allowed, including Sinemet, Mirapex and Requip. Amantadine can be taken up to 1 week before beginning the study. Dose-finding phase. Patients are admitted to the NIH Clinical Center for 2 to 3 days for a levodopa "dose-finding" procedure. For this test, patients stop taking Sinemet and instead have it infused through a vein. During the infusions, the drug dose is increased slowly until parkinsonian symptoms improve or unacceptable side effects occur or the maximum study dose is reached. Symptoms are monitored frequently. At given times during the infusion, saline is given instead of Sinemet. The infusions usually begin in the early morning and continue until evening. Patients resume taking Sinemet between infusions. (Patients who have had dosing infusions in the last 3 months do not have to undergo this phase of the study.) After the dose-finding phase, patients are randomly assigned to take placebo (a "sugar pill") or talampanel. Those taking talampanel also receive amantadine at their usual dosages. At some point in the study, amantadine is replaced with placebo. Patients in t
Interventions
- DRUG IV Levodopa
- DRUG Talampanel
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 40 participants |
| Start Date | 2005-04 |
| Est. Completion | 2006-02 |
| Phase | Phase 2 |
What the finished NCT00108667 record still lists
NCT00108667 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 40 participants, a relatively small participant target, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (70% lower).
The record links to 0 conditions, and to 2 interventions - of which IV Levodopa is the first listed.
NCT00108667 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00108667 about?
NCT00108667 is a clinical study titled "Talampanel to Treat Parkinson's Disease". This study will evaluate the effects of the experimental drug talampanel on dyskinesias (involuntary movements) that develop in patients with Parkinson's disease as a result of long-term treatment with levodopa (Sinemet). The drug will be tested alone and in combination with amantadine-a drug common...
What is the current status of trial NCT00108667?
This trial is currently completed. It is a Phase 2 study. The enrollment target is 40 participants. The study started on 2005-04. Estimated completion is 2006-02.
What interventions are being tested in trial NCT00108667?
The interventions under investigation include: IV Levodopa (DRUG), Talampanel (DRUG).
Who is sponsoring clinical trial NCT00108667?
This trial is sponsored by National Institute of Neurological Disorders and Stroke (NINDS), which has 567 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00108667's enrollment target sits among peer trials
40 1362nd of 2000 higher than 542 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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