Clinical Trial Results:
An Open-Label, Long-Term Safety Study Including a Double-Blind, Placebo-Controlled, Randomized Withdrawal Period of TEV-50717 (Deutetrabenazine) for the Treatment of Tourette Syndrome in Children and Adolescents
Summary
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EudraCT number |
2016-000630-22 |
Trial protocol |
HU SE ES DK PL FR NL IT RO |
Global end of trial date |
15 May 2020
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Results information
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Results version number |
v1(current) |
This version publication date |
27 Nov 2020
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First version publication date |
27 Nov 2020
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Other versions |
Trial Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
Subject Disposition
Baseline Characteristics
End Points
Adverse Events
More Information
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Trial identification
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Sponsor protocol code |
TV50717-CNS-30047
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Additional study identifiers
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ISRCTN number |
- | ||
US NCT number |
- | ||
WHO universal trial number (UTN) |
- | ||
Sponsors
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Sponsor organisation name |
Teva Branded Pharmaceutical Products R&D, Inc.
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Sponsor organisation address |
145 Brandywine Parkway, West Chester, United States, 19380
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Public contact |
Director, Clinical Research, Teva Branded Pharmaceutical Products R&D, Inc., 001 1-888-483-8279, USMedInfo@tevapharm.com
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Scientific contact |
Director, Clinical Research, Teva Branded Pharmaceutical Products R&D, Inc., 001 1-888-483-8279, USMedInfo@tevapharm.com
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Paediatric regulatory details
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Is trial part of an agreed paediatric investigation plan (PIP) |
No
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Does article 45 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Does article 46 of REGULATION (EC) No 1901/2006 apply to this trial? |
No
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Results analysis stage
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Analysis stage |
Final
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Date of interim/final analysis |
19 May 2020
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Is this the analysis of the primary completion data? |
Yes
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Primary completion date |
15 May 2020
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Global end of trial reached? |
Yes
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Global end of trial date |
15 May 2020
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Was the trial ended prematurely? |
Yes
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General information about the trial
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Main objective of the trial |
The primary objective of this study is to evaluate the safety and tolerability of long-term therapy with TEV-50717.
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Protection of trial subjects |
This study was conducted in full accordance with the International Council for Harmonisation (ICH) Good Clinical Practice (GCP) Tripartite Guideline (E6) and any applicable national and local laws and regulations (for example, Code of Federal Regulations Title 21, Parts 11, 50, 54, 56, 312, and 314 and European Union Directive 2001/20/EC on the approximation of the laws, regulations, and administrative provisions of the Member States relating to the implementation of GCP in the conduct of clinical studies on medicinal products for human use).
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Background therapy |
- | ||
Evidence for comparator |
- | ||
Actual start date of recruitment |
15 May 2018
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Long term follow-up planned |
No
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Independent data monitoring committee (IDMC) involvement? |
No
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Population of trial subjects
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Number of subjects enrolled per country |
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Country: Number of subjects enrolled |
Australia: 1
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Country: Number of subjects enrolled |
Argentina: 5
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Country: Number of subjects enrolled |
Canada: 18
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Country: Number of subjects enrolled |
Colombia: 7
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Country: Number of subjects enrolled |
Denmark: 6
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Country: Number of subjects enrolled |
Spain: 6
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Country: Number of subjects enrolled |
Hungary: 12
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Country: Number of subjects enrolled |
Italy: 4
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Country: Number of subjects enrolled |
Korea, Republic of: 4
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Country: Number of subjects enrolled |
Mexico: 8
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Country: Number of subjects enrolled |
Poland: 33
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Country: Number of subjects enrolled |
Russian Federation: 6
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Country: Number of subjects enrolled |
Serbia: 9
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Country: Number of subjects enrolled |
Ukraine: 30
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Country: Number of subjects enrolled |
United States: 79
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Worldwide total number of subjects |
228
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EEA total number of subjects |
61
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Number of subjects enrolled per age group |
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In utero |
0
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Preterm newborn - gestational age < 37 wk |
0
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Newborns (0-27 days) |
0
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Infants and toddlers (28 days-23 months) |
0
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Children (2-11 years) |
95
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Adolescents (12-17 years) |
133
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Adults (18-64 years) |
0
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From 65 to 84 years |
0
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85 years and over |
0
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Recruitment
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Recruitment details |
228 participants with Tourette Syndrome were enrolled after completing one of two eligible parent studies. | ||||||||||||||||||||
Pre-assignment
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Screening details |
Period I included an open-label period with titration and maintenance. Period II included randomized drug withdrawal in which participants were administered their current TEV50717 dose or placebo. Participants were re-titrated to TEV-50717. In Period III, participants continued their open-label maintenance dose of TEV50717. | ||||||||||||||||||||
Period 1
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Period 1 title |
Period I - Part A
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Is this the baseline period? |
Yes | ||||||||||||||||||||
Allocation method |
Not applicable
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Blinding used |
Not blinded | ||||||||||||||||||||
Blinding implementation details |
Open-label
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Arms
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Arm title
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TEV-50717 | ||||||||||||||||||||
Arm description |
All participants underwent TEV-50717 dose titration in this study. They received 6 mg of TEV-50717 with food on the evening of day 1. The titration scheme and maximum dose were determined by body weight and cytochrome P450 2D6 (CYP2D6) impairment status from the parent study. | ||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||
Investigational medicinal product name |
TEV-50717 (Deuterabenazine)
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
All participants underwent TEV-50717 dose titration in this study. Participants received 6 mg of TEV-50717 with food on the evening of day 1. The titration scheme and maximum dose were determined by body weight and cytochrome P450 2D6 (CYP2D6) impairment status from the parent study.
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Period 2
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Period 2 title |
Period II - Part B
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Is this the baseline period? |
No | ||||||||||||||||||||
Allocation method |
Randomised - controlled
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Blinding used |
Double blind | ||||||||||||||||||||
Roles blinded |
Subject, Investigator | ||||||||||||||||||||
Blinding implementation details |
Double-blind
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Arms
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Are arms mutually exclusive |
Yes
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Arm title
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Randomized TEV-50717 | ||||||||||||||||||||
Arm description |
Participants were randomized to their current dose of TEV-50717, which was administered during the Part B Randomized Drug Withdrawal (RW) 2-week period. | ||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||
Investigational medicinal product name |
TEV-50717 (Deuterabenazine)
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Participants received their current dose of TEV-50717.
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Arm title
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Randomized Placebo | ||||||||||||||||||||
Arm description |
Participants were randomized to placebo, which was administered during the Part B Randomized Drug Withdrawal (RW) 2-week period only. | ||||||||||||||||||||
Arm type |
Placebo | ||||||||||||||||||||
Investigational medicinal product name |
Placebo
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Placebo was administered during Part B Randomized Drug Withdrawal (RW) 2-week period only.
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Period 3
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Period 3 title |
Period III - Part A Resumed
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Is this the baseline period? |
No | ||||||||||||||||||||
Allocation method |
Not applicable
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Blinding used |
Not blinded | ||||||||||||||||||||
Blinding implementation details |
Open-label
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Arms
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Arm title
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TEV-50717 Re-titration and Maintenance | ||||||||||||||||||||
Arm description |
Participants who were randomized to placebo during the withdrawal period were re-titrated to their TEV-50717 maintenance dose. Participants who were randomized to TEV-50717 continued their maintenance dose. | ||||||||||||||||||||
Arm type |
Experimental | ||||||||||||||||||||
Investigational medicinal product name |
TEV-50717 (Deuterabenazine)
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Investigational medicinal product code |
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Other name |
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Pharmaceutical forms |
Tablet
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Routes of administration |
Oral use
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Dosage and administration details |
Participants received their current dose of TEV-50717 or were re-titrated to TEV-50717 if randomized to the placebo in the previous period.
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Baseline characteristics reporting groups
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Reporting group title |
TEV-50717
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Reporting group description |
All participants underwent TEV-50717 dose titration in this study. They received 6 mg of TEV-50717 with food on the evening of day 1. The titration scheme and maximum dose were determined by body weight and cytochrome P450 2D6 (CYP2D6) impairment status from the parent study. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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End points reporting groups
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Reporting group title |
TEV-50717
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Reporting group description |
All participants underwent TEV-50717 dose titration in this study. They received 6 mg of TEV-50717 with food on the evening of day 1. The titration scheme and maximum dose were determined by body weight and cytochrome P450 2D6 (CYP2D6) impairment status from the parent study. | ||
Reporting group title |
Randomized TEV-50717
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Reporting group description |
Participants were randomized to their current dose of TEV-50717, which was administered during the Part B Randomized Drug Withdrawal (RW) 2-week period. | ||
Reporting group title |
Randomized Placebo
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Reporting group description |
Participants were randomized to placebo, which was administered during the Part B Randomized Drug Withdrawal (RW) 2-week period only. | ||
Reporting group title |
TEV-50717 Re-titration and Maintenance
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Reporting group description |
Participants who were randomized to placebo during the withdrawal period were re-titrated to their TEV-50717 maintenance dose. Participants who were randomized to TEV-50717 continued their maintenance dose. |
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End point title |
Number of participants reporting treatment emergent adverse events (AEs) for Parts A & B [1] | ||||||||||||||||
End point description |
An AE 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. Incudes clinically significant changes such as changes in vital signs or lab values. Relationship of AE to treatment was determined by the Investigator. Serious AEs 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 participant and required medical intervention to prevent the previously listed serious outcomes. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.
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End point type |
Primary
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End point timeframe |
Day 1 to Week 55
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Notes [1] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The assessment for this endpoint was descriptive and no statistical analyses were performed for this endpoint. |
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No statistical analyses for this end point |
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End point title |
Number of participants reporting treatment emergent adverse events (AEs) in Part B (Period II) [2] | ||||||||||||||||||||||||
End point description |
An AE 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. Incudes clinically significant changes such as changes in vital signs or lab values. Relationship of AE to treatment was determined by the Investigator. Serious AEs 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 participant and required medical intervention to prevent the previously listed serious outcomes. A summary of other non-serious AEs and all serious AEs, regardless of causality is located in Reported AE section.
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End point type |
Primary
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End point timeframe |
Weeks 28 to 30
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Notes [2] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The assessment for this endpoint was descriptive and no statistical analyses were performed for this endpoint. |
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No statistical analyses for this end point |
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End point title |
Change From baseline in the Children's Depression Inventory Second Edition (CDI-2; Parent Version) Total Score [3] | ||||||||||||||||||||||||||
End point description |
Parents were asked to rate their child's behaviors in past 2 weeks on a 4-point Likert scale from "not at all" to "much or most of the time." It contains 2 subscales (emotional problems and functional problem). Total score: sum of 2 subscales, ranging from 0 to 51, with higher score indicating more depression-related behaviors.
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End point type |
Primary
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End point timeframe |
Baseline, Weeks 2, 4, 8, 15, 28, 34, 41, 54, 55
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Notes [3] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The assessment for this endpoint was descriptive and no statistical analyses were performed for this endpoint. |
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No statistical analyses for this end point |
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End point title |
Change From baseline in the Children's Depression Inventory Second Edition (CDI-2; Self-reported Version) Total Score [4] | ||||||||||||||||||||||||||
End point description |
CDI-2 self-report: 28-item questionnaire assessing depressive symptoms in children 7 to 17 years of age with basic reading and comprehension skills. Children were asked to choose 1 of 3 statements that most closely aligns with their feelings in past 2 weeks. It contains 6 subscales (emotional problem, negative mood/physical symptoms, negative self-esteem, functional problems, ineffectiveness, interpersonal problems). Total score: sum of all subscales scores, ranging from 0 to 56, with higher score indicating greater depression severity.CDI-2 parent: 17-item questionnaire administered to parents to assess depression-related behaviors observed in their children.
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End point type |
Primary
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End point timeframe |
Baseline, Weeks 2, 4, 8, 15, 28, 34, 41, 54, 55
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Notes [4] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The assessment for this endpoint was descriptive and no statistical analyses were performed for this endpoint. |
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No statistical analyses for this end point |
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End point title |
Change From randomized withdrawal baseline (Week 28) in the Children's Depression Inventory Second Edition (CDI-2; Parent Version) Total Score at Week 30 [5] | ||||||||||||
End point description |
Parents were asked to rate their child's behaviors in past 2 weeks on a 4-point Likert scale from "not at all" to "much or most of the time." It contains 2 subscales (emotional problems and functional problem). Total score: sum of 2 subscales, ranging from 0 to 51, with higher score indicating more depression-related behaviors.
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End point type |
Primary
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End point timeframe |
Week 28, Week 30
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Notes [5] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The assessment for this endpoint was descriptive and no statistical analyses were performed for this endpoint. |
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No statistical analyses for this end point |
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End point title |
Change From randomized withdrawal baseline (Week 28) in the Children's Depression Inventory Second Edition (CDI-2; Self-reported Version) Total Score at Week 30 [6] | ||||||||||||
End point description |
CDI-2 self-report: 28-item questionnaire assessing depressive symptoms in children 7 to 17 years of age with basic reading and comprehension skills. Children were asked to choose 1 of 3 statements that most closely aligns with their feelings in past 2 weeks. It contains 6 subscales (emotional problem, negative mood/physical symptoms, negative self-esteem, functional problems, ineffectiveness, interpersonal problems). Total score: sum of all subscales scores, ranging from 0 to 56, with higher score indicating greater depression severity.CDI-2 parent: 17-item questionnaire administered to parents to assess depression-related behaviors observed in their children.
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End point type |
Primary
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End point timeframe |
Week 28, Week 30
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Notes [6] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The assessment for this endpoint was descriptive and no statistical analyses were performed for this endpoint. |
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No statistical analyses for this end point |
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End point title |
Number of participants reporting any suicidal ideation or suicidal behavior according to the Columbia Suicide Severity Rating Scale (C-SSRS) [7] | ||||||||||||||||||||||||||
End point description |
C-SSRS included responses for Suicidal Ideation or Suicidal Behavior in following 10 categories: 1 = Wish to be dead; 2 = Non-specific active suicidal thoughts; 3 = Active suicidal ideation with any methods (not plan) without intent to act; 4 = Active suicidal ideation with some intent to act, without specific plan; 5 = Active suicidal ideation with specific plan and intent; 6 = Preparatory acts or behavior; 7 = Aborted attempt; 8 = Interrupted attempt; 9 = Non-fatal suicide attempt; and 10 = Completed suicide. Number of participants with any suicidal ideation or suicidal behavior are reported. Any Suicidal ideation or Suicidal Behavior events reported as TEAEs along with all other reported TEAEs are included in the AE module.
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End point type |
Primary
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End point timeframe |
Baseline, Weeks 2, 4, 8, 15, 28, 34, 41, 54, 55
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Notes [7] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The assessment for this endpoint was descriptive and no statistical analyses were performed for this endpoint. |
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No statistical analyses for this end point |
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End point title |
Number of participants reporting any suicidal ideation or suicidal behavior according to the Columbia Suicide Severity Rating Scale (C-SSRS) at randomized withdrawal baseline visit (Week 28) and Week 30 [8] | |||||||||||||||
End point description |
C-SSRS included responses for Suicidal Ideation or Suicidal Behavior in following 10 categories: 1 = Wish to be dead; 2 = Non-specific active suicidal thoughts; 3 = Active suicidal ideation with any methods (not plan) without intent to act; 4 = Active suicidal ideation with some intent to act, without specific plan; 5 = Active suicidal ideation with specific plan and intent; 6 = Preparatory acts or behavior; 7 = Aborted attempt; 8 = Interrupted attempt; 9 = Non-fatal suicide attempt; and 10 = Completed suicide. Number of participants with any suicidal ideation or suicidal behavior are reported. Any Suicidal ideation or Suicidal Behavior events reported as TEAEs along with all other reported TEAEs are included in the AE module.
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End point type |
Primary
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End point timeframe |
Week 28, Week 30
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Notes [8] - No statistical analyses have been specified for this primary end point. It is expected there is at least one statistical analysis for each primary end point. Justification: The assessment for this endpoint was descriptive and no statistical analyses were performed for this endpoint. |
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No statistical analyses for this end point |
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End point title |
Change from baseline in the Yale Global Tic Severity Scale (YGTSS) Total Tic Score (TTS) | ||||||||||||||||||||
End point description |
YGTSS rating scale is a semi-structured clinician rating instrument that provides an evaluation of the number, frequency, intensity, complexity, and interference of motor and phonic tics. YGTSS is composed of 11 items: 5 items for motor tic severity, 5 items for vocal tic severity, and 1 item for impairment. Each item for motor tic severity and vocal is rated on a 6-point scale (0 for none to 5 to severe). MTSS is the sum of the 5 items for motor tic severity and VTSS is the sum of the 5 items for vocal tic severity. TTS is the sum of MTSS and VTSS, ranges from 0 (none/absent) to 50 (severe). Higher scores indicate greater severity/worse outcome. Baseline is defined as the last measurement on or prior to the first dose of the open-label study medication.
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End point type |
Secondary
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End point timeframe |
Baseline, Weeks 8, 15, 28, 41, 54, and 55
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No statistical analyses for this end point |
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End point title |
Change from baseline in the Tourette Syndrome-Clinical Global Impression (TS-CGI) score | ||||||||||||||||||||
End point description |
The TS-CGI scale is a 7-point Likert scale that allows the clinician to use all available information to assess the impact of tics on the participant's quality of life. The TS-CGI is rated as follows: 1 (normal or no tics at all), 2 (borderline), 3 (mild), 4 (moderate), 5 (marked), 6 (severe), and 7 (extreme, incapacitating tics). Lower scores indicate better quality of life. Baseline is defined as the last measurement on or prior to the first dose of the open-label study medication.
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End point type |
Secondary
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End point timeframe |
Baseline, Weeks 8, 15, 28, 41, 54, and 55
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No statistical analyses for this end point |
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End point title |
Change from baseline in the Tourette Syndrome-Patient Global Impression of Impact (TS-PGII) score | ||||||||||||||||||||
End point description |
The TS-PGII is a single-item questionnaire that asks the participant to assess the degree of impact due to current tics (How much do your current tics disrupt things in your life?). The TS-PGII uses a 5-point scale, ranging from not at all (1) to very much (5), to assess overall response to therapy. Baseline is defined as the last measurement on or prior to the first dose of the open-label study medication.
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End point type |
Secondary
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End point timeframe |
Baseline, Weeks 8, 15, 28, 41, 54, and 55
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No statistical analyses for this end point |
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End point title |
Change from baseline in the Child and Adolescent Gilles de la Tourette Syndrome – Quality of Life (C&A-GTS-QOL) activities of daily living (ADL) subscale score | ||||||||||||||||
End point description |
C&A-GTS-QOL is a 27-item questionnaire that asks participant to assess the extent to which their quality of life is impacted by their symptoms. C&A-GTS-QOL contains 6 subscales (cognitive, coprophenomena, psychological, physical, obsessive-compulsive, and ADL) and uses a 5-point Likert scale ranging from no problem to extreme problem. Following 3 questions from 27-item questionnaire were assessed in ADL C&A-GTS-QOL subscale: Question 2 (Had difficulty with school or sport activities?), 24 (Felt you needed more help or support from other people?), and 26 (Had difficulty going out with other people?). Total score of ADL subscale ranged from 0 (no problem) to 12 (extreme problem). Lower score indicated better quality of life. Baseline is defined as the last measurement on or prior to the first dose of the open-label study medication.
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End point type |
Secondary
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End point timeframe |
Baseline, Weeks 6, 28, 34, 54
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No statistical analyses for this end point |
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End point title |
Change from randomized withdrawal baseline (Week 28) in the Yale Global Tic Severity Scale (YGTSS) Total Tic Score (TTS) to Week 30 | ||||||||||||
End point description |
YGTSS rating scale is a semi-structured clinician rating instrument that provides an evaluation of the number, frequency, intensity, complexity, and interference of motor and phonic tics. YGTSS is composed of 11 items: 5 items for motor tic severity, 5 items for vocal tic severity, and 1 item for impairment. Each item for motor tic severity and vocal is rated on a 6-point scale (0 for none to 5 to severe). MTSS is the sum of the 5 items for motor tic severity and VTSS is the sum of the 5 items for vocal tic severity. TTS is the sum of MTSS and VTSS, ranges from 0 (none/absent) to 50 (severe). Higher scores indicate greater severity/worse outcome. The model is an ANCOVA model that includes fixed effects for treatment group. The randomized withdrawal baseline TTS and age group at baseline (2 levels: 6-11 years, 12-18 years) are included as covariates.
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End point type |
Secondary
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End point timeframe |
Week 28, Week 30
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Statistical analysis title |
Least Squares Mean | ||||||||||||
Comparison groups |
Randomized TEV-50717 v Randomized Placebo
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Number of subjects included in analysis |
80
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Analysis specification |
Pre-specified
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Analysis type |
superiority | ||||||||||||
P-value |
= 0.78 | ||||||||||||
Method |
ANCOVA | ||||||||||||
Parameter type |
Mean difference (final values) | ||||||||||||
Point estimate |
-0.4
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Confidence interval |
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level |
95% | ||||||||||||
sides |
2-sided
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lower limit |
-3.4 | ||||||||||||
upper limit |
2.6 |
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Adverse events information
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Timeframe for reporting adverse events |
Baseline to Week 55
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Adverse event reporting additional description |
Safety analysis set included all participants who received at least 1 dose of study drug.
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Assessment type |
Systematic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary used for adverse event reporting
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Dictionary name |
MedDRA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dictionary version |
22.1
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Reporting groups
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Reporting group title |
Total
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Reporting group description |
All participants underwent TEV-50717 dose titration in this study. They received 6 mg of TEV-50717 with food on the evening of day 1. The titration scheme and maximum dose were determined by body weight and cytochrome P450 2D6 (CYP2D6) impairment status from the parent study. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Frequency threshold for reporting non-serious adverse events: 5% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Substantial protocol amendments (globally) |
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Were there any global substantial amendments to the protocol? Yes | |||
Date |
Amendment |
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22 Jun 2017 |
To change study conduct including number of participants randomized and clinical study personnel. |
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15 Nov 2017 |
To incorporate randomized drug withdrawal period and update prohibited medications. |
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01 Feb 2018 |
To correct the re-titration regiment in Part II. |
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22 May 2019 |
To address regulatory requirements such as updated number of participants, an interim analysis, and clarify screening procedures. |
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Interruptions (globally) |
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Were there any global interruptions to the trial? No | |||
Limitations and caveats |
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Limitations of the trial such as small numbers of subjects analysed or technical problems leading to unreliable data. | |||
None |