E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Tardive Dyskinesia |
Tardivné dyskinézie |
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E.1.1.1 | Medical condition in easily understood language |
Involuntary movements of the tongue, lips, face, trunk, and extremities |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
• To evaluate the efficacy of SD-809 to reduce the severity of abnormal involuntary movements of Tardive Dyskinesia
• To evaluate the safety and tolerability of titration and maintenance therapy with SD-809 in subjects with drug-induced Tardive Dyskinesia |
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E.2.2 | Secondary objectives of the trial |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Subject is between 18 and 75 years of age, inclusive.
2. Subject has a history of using a dopamine receptor antagonist for at least 3 months (or 1 month in subjects 60 years of age and older).
3. Subject has a clinical diagnosis of TD and has had symptoms for at least 3 months prior to Screening.
4. The subject's TD symptoms are bothersome to the subject or cause functional impairment.
5. At the Screening and Baseline visits, the subject has:
• Moderate or severe abnormal movements as judged by the Investigator based on Item 8 of the AIMS, AND
• A total motor AIMS score of ≥ 6 (based on Items 1 through 7) as assessed by the Investigator.
Note: A video recording of the AIMS at Screening will also be reviewed by a blinded central rater to confirm eligibility prior to randomization.
6. For subjects with underlying psychiatric illness:
• Subject is psychiatrically stable and has had no change in psychoactive medications (including, but not limited to, neuroleptics, benzodiazepines, anticonvulsants, and mood stabilizers) for ≥ 30 days before Screening (45 days for antidepressants).
• Subjects on long-acting (depot) medications been on stable therapy (dose, frequency) for ≥3 months before Screening.
• Subject has a mental health provider who is aware of the subject's participation in the trial, and does not anticipate any changes to the subject's treatment regimen (drug, dose, frequency) in the next 3 months.
7. Subject has a history of being compliant with medications.
8. Subject is able to swallow study drug whole.
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E.4 | Principal exclusion criteria |
1. Subject has received any of the following medications within 30 days of Screening or
Baseline:
• Tetrabenazine, reserpine, α-methyl-p-tyrosine (AMPT), botulinum toxin (within 3 months of Screening), and medications with strong anticholinergic activity (trihexyphenidyl, benztropine, orphenadrine, procyclidine, and biperiden)
• Metoclopramide, promethazine, and prochlorperazine
• Stimulants (i.e., methylphenidate, amphetamine/dextroamphetamine, lisdexamphetamine, etc.), or monoamine oxidase inhibitors (MAOIs)
• Levodopa or dopamine agonists
2. Subject has participated in any previous study of SD-809 in which they received SD-809.
3. Subject has a neurological condition other than TD that may interfere with assessing the severity of dyskinesias.
4. Subject has a serious untreated or undertreated psychiatric illness at Screening or Baseline.
5. Subject has active suicidal ideation at Screening or Baseline.
6. Subject has history of any of the following within the last 6 months of Screening:
• Previous intent to act on suicidal ideation with a specific plan (positive answer to question 5 on C-SSRS), irrespective of level of ambivalence at the time of suicidal thought
• Previous preparatory acts to commit suicide or suicidal behavior
• A previous actual, interrupted or aborted suicide attempt
7. Subject has a score ≥11 on the depression subscale of the Hospital Anxiety and Depression Scale (HADS) at Screening or Baseline.
8. Subject is developmentally disabled or has evidence of dementia.
9. Subject has an unstable or serious medical illness at Screening or Baseline.
10. Subject has history (within 3 months) or presence of violent behavior. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The change in AIMS score (Items 1 through 7) from Baseline to Week 12, as assessed by blinded central video rating. The Baseline AIMS score is defined for each subject as the Day 0 assessment. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
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E.5.2 | Secondary end point(s) |
The proportion of subjects who are a treatment success at Week 12, based on the Clinical Global Impression of Change (CGIC). |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | Yes |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 5 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 35 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Czech Republic |
Germany |
Poland |
Slovakia |
United States |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | |
E.8.9.1 | In the Member State concerned months | 11 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 1 |