Reducing Involuntary Movements in Participants With Tardive Dyskinesia (NCT02198794) | Clinical Trial Compass
CompletedPhase 3
Reducing Involuntary Movements in Participants With Tardive Dyskinesia
United States, Czechia, Germany343 participantsStarted 2014-10-20
Plain-language summary
The purpose of this study is to evaluate the long-term safety, tolerability, and efficacy of SD-809 in reducing the severity of abnormal involuntary movements of moderate to severe tardive dyskinesia. The purpose of part B is to establish the durability of effect of SD-809 following 1-week period of randomized withdrawal (SD-809 and placebo), followed by 12 weeks of maintenance with SD-809.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* History of using a dopamine receptor antagonist for at least 3 months
* Clinical diagnosis of tardive dyskinesia and has had symptoms for at least 3 months prior to screening
* Participant has successfully completed a controlled study of SD-809 for treatment of moderate to severe tardive dyskinesia
* Participants with underlying psychiatric diagnosis are stable and have no change in psychoactive medications
* Have a mental health provider and does not anticipate any changes to treatment regimen in the next 3 months
* History of being compliant with prescribed medications
* Able to swallow study drug whole
* Be in good general health and is expected to attend all study visits and complete study assessments
* Female participants must not be pregnant and agree to an acceptable method of contraception
Exclusion Criteria:
* Currently receiving medication for the treatment of tardive dyskinesia
* Have a neurological condition other than tardive dyskinesia that may interfere with assessing the severity of dyskinesias
* Have a serious untreated or undertreated psychiatric illness
* Have recent history or presence of violent behavior
* Have unstable or serious medical illness
* Have evidence of hepatic impairment
* Have evidence of renal impairment
* Have known allergy to any component of SD-809 or tetrabenazine
* Has participated in an investigational drug or device trial (other than Study C-18, Study C-23, or any other eligible TEV-50717 parent study) and re…
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Part A, B, and C: Number of Participants With Treatment-Emergent AEs (TEAEs), Serious TEAEs, Severe TEAEs, Drug-Related TEAEs, and TEAEs Leading to Withdrawal
Timeframe: Baseline up to the end of follow-up (4 weeks after the last dose of study drug; mean exposure: up to approximately 866.1 days)
2
Part B: Change From Day 1 Visit in Total Motor AIMS Score at Day 7 Visit, as Assessed by Blinded Central Video Rating