The purpose of this study is to determine whether an investigational drug, SD-809 (deutetrabenazine), will reduce the severity of abnormal involuntary movements of tardive dyskinesia.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
117
Change in Centrally Read Abnormal Involuntary Movement Scale (AIMS) Score From Baseline to Week 12 Using Mixed Model Repeated Measures (MMRM) Analysis
AIMS is an assessment tool used to detect and follow the severity of TD over time. The AIMS is composed of 12 clinician-administered and scored items. AIMS was digitally video recorded using a standard protocol and independently reviewed by blinded central raters who were experts in movement disorders. This outcome sums items 1 through 7 which cover orofacial movements, and extremity and truncal dyskinesia. Severity ratings were from 0 (none) to 4 (severe) for a total scale of 0 (no orofacial, truncal, and extremity dyskinesia) to 28 (severe orofacial, truncal, and extremity dyskinesia). A negative change from baseline score indicates improvement. A MMRM analysis with change from baseline in AIMS score as dependent variable was used. The model included fixed effects for treatment, time point, treatment-by-time point interaction, DRA status, and baseline AIMS as a covariate. An unstructured covariance model was used.
Time frame: Day 0 (Baseline), Weeks 2, 4, 6, 9 and 12
Percentage of Patients Who Are a Treatment Success at Week 12 as Assessed by the Clinical Global Impression of Change (CGIC)
The CGIC is a single-item questionnaire that asks the investigator to assess a patient's TD symptoms at specific visits after initiating therapy. The CGIC uses a 7 point Likert Scale, ranging from very much worse (-3) to very much improved (+3), to assess overall response to therapy. A treatment success was defined as "much improved" or "very much improved" at the week 12 visit. Patients whose status at week 12 was not known, as well as patients who were not "much improved" or "very much improved" at the week 12 visit, were considered treatment failures.
Time frame: Week 12
Percentage of Patients Who Are a Treatment Success at Week 12 as Assessed by the Patient Global Impression of Change (PGIC)
The PGIC is a single-item questionnaire that asks the patient to assess their TD symptoms at specific visits after initiating therapy. The PGIC uses a 7 point Likert Scale, ranging from very much worse (-3) to very much improved (+3), to assess overall response to therapy. A treatment success was defined as "much improved" or "very much improved" at the week 12 visit. Patients whose status at week 12 was not known, as well as patients who were not "much improved" or "very much improved" at the week 12 visit, were considered treatment failures.
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Unnamed facility
Tuscaloosa, Alabama, United States
Unnamed facility
Anaheim, California, United States
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Glendale, California, United States
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Oceanside, California, United States
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Orange, California, United States
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San Bernardino, California, United States
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San Diego, California, United States
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Denver, Colorado, United States
Unnamed facility
New Haven, Connecticut, United States
Unnamed facility
Stamford, Connecticut, United States
...and 31 more locations
Time frame: Week 12
Change From Baseline to Week 12 in the Modified Craniocervical Dystonia Questionnaire (CDQ-24)
The CDQ-24 is a disease-specific quality of life questionnaire developed for use in patients with craniocervical dystonia, including both cervical dystonia (CD) and blepharospasm (BPS). The CDQ 24 was modified such that the questions focus more directly on the impact of TD (as opposed to CD/BPS) on quality of life. The following domains are evaluated in the CDQ-24: stigma, emotional well-being, pain, activities of daily living, and social/family life. Each of the 24 questions were rated by patients on a scale of 0=no impairment to 4=severest impairment for a total scale of 0 (no impairment) to 96 (severe impairment). Negative change from baseline scores indicate improvement.
Time frame: Day 0 (Baseline), Week 12 with last observation carried forward
Participants With Adverse Events for the Overall Treatment Period
An adverse event was defined as any untoward medical occurrence that develops or worsens in severity during the conduct of a clinical study and does not necessarily have a causal relationship to the study drug. Severity was rated by the investigator on a scale of mild, moderate and severe, with severe= an AE which prevents normal daily activities. Relation of AE to treatment was determined by the investigator and includes possibly, probably and definitely related categories. Serious AEs (SAE) include death, a life-threatening adverse event, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, OR an important medical event that jeopardized the patient and required medical intervention to prevent the previously listed serious outcomes.
Time frame: Day 1 to Week 12
Percentage Change in Centrally Read Abnormal Involuntary Movement Scale (AIMS) Score From Baseline to Week 12 Using MMRM Analysis
AIMS is an assessment tool used to detect and follow the severity of TD over time. The AIMS is composed of 12 clinician-administered and scored items. AIMS was digitally video recorded using a standard protocol and independently reviewed by blinded central raters who were experts in movement disorders. This outcome sums items 1 through 7 which cover orofacial movements, and extremity and truncal dyskinesia. Severity ratings were from 0 (none) to 4 (severe) for a total scale of 0 (no orofacial, truncal, and extremity dyskinesia) to 28 (severe orofacial, truncal, and extremity dyskinesia). A negative percent change from baseline score indicates improvement. The MMRM model includes fixed effects for treatment, time point (weeks 2, 4, 6, 9, 12), treatment-by-time point interaction, DRA status, and baseline AIMS as a covariate. Patient is a random effect.
Time frame: Day 0 (Baseline), Weeks 2, 4, 6, 9 and 12
Cumulative Percentage of Abnormal Involuntary Movement Scale (AIMS) Responders by Response Level (Percentage Improvement From Baseline) at Week 12
Response level represents the % improvement in AIMS from baseline. AIMS is an assessment tool used to detect and follow the severity of TD over time. The AIMS is composed of 12 clinician-administered and scored items. AIMS was digitally video recorded using a standard protocol and independently reviewed by blinded central raters who were experts in movement disorders. This outcome sums items 1 through 7 which cover orofacial movements, and extremity and truncal dyskinesia. Severity ratings were from 0 (none) to 4 (severe) for a total scale of 0 (no orofacial, truncal, and extremity dyskinesia) to 28 (severe orofacial, truncal, and extremity dyskinesia). Patients with a missing AIMS score were considered to be AIMS nonresponders.
Time frame: Day 0 (Baseline), Week 12
Change in Locally Read Abnormal Involuntary Movement Scale (AIMS) Score From Baseline to Week 12 Using MMRM Analysis
This outcome is similar to the primary outcome except that AIMS was read locally. AIMS is an assessment tool used to detect and follow the severity of TD over time. The AIMS is composed of 12 clinician-administered and scored items. This outcome reports the local reading of AIMS data. This outcome sums items 1 through 7 which cover orofacial movements, and extremity and truncal dyskinesia. Severity ratings were from 0 (none) to 4 (severe) for a total scale of 0 (no orofacial, truncal, and extremity dyskinesia) to 28 (severe orofacial, truncal, and extremity dyskinesia). A negative change from baseline score indicates improvement. A MMRM analysis with change from baseline in AIMS score as dependent variable was used. The model included fixed effects for treatment, time point (weeks 2, 4, 6, 9, and 12), treatment-by-time point interaction, DRA status, and baseline AIMS as a covariate.
Time frame: Day 0 (Baseline), Weeks 2, 4, 6, 9 and 12