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Comparison of Slow and Fast Transition From Stimulants to Atomoxetine in Children and Adolescents With Attention Deficit/Hyperactivity Disorder(ADHD)

A Randomized, Controlled, Open-Label Comparison Study of the Efficacy and Safety of Slow Transitioning Compared With Fast Transitioning From a Stimulant Medication to Atomoxetine in Pediatric and Adolescent Outpatients With DSM-IV Attention-Deficit/Hyperactivity Disorder (ADHD)

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00760747
Acronym
ADHD SWITCH
Enrollment
112
Registered
2008-09-26
Start date
2008-09-30
Completion date
2010-09-30
Last updated
2011-09-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Attention Deficit Hyperactivity Disorder

Keywords

ADHD, Children, Stimulant, Atomoxetine, Adolescents

Brief summary

Children and adolescents with Attention Deficit Hyperactivity Disorder (ADHD) who are not tolerating or not responding well to stimulant therapy will be included in this study. Two different strategies for transition from Stimulant to Atomoxetine will be used: Slow (10 weeks) and fast (2 weeks). Changes in ADHD symptoms and tolerability of medication will be compared between the two different switching approaches.

Detailed description

Study B4Z-EW-LYFJ is a phase IV multicentre, open label, controlled study in approximately 120 patients with ADHD from 6 years to 16 years of age. After the screening period, patients will be randomized (centrally in a 1:1 ratio) either to a transition period of 10 weeks (slow switching arm) or to a transition period of 2 weeks (fast switching arm). After completion of the 10 week open phase patients will be treated for a further 4 weeks with atomoxetine.

Interventions

DRUGAtomoxetine

1.2 mg/kg/day up to 1.8 mg/kg/day, orally (PO)

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
6 Years to 16 Years
Healthy volunteers
No

Inclusion criteria

* Outpatients between 6-16 years of age * Diagnostic and Statistical Manual of Mental Disorders Fourth Edition (DSM-IV) diagnostic criteria for ADHD must be met * Normal laboratory and electrocardiogram (ECG) results * Normal intelligence * Must have unsatisfactory symptom response to stimulant therapy or experience of adverse events while on stimulant therapy

Exclusion criteria

* Less than 20 kg or more than 70 kg at study entry * Concomitant major psychiatry disorders, drug or alcohol abuse or serious suicide risk * Medical conditions such as seizures, severe allergies, glaucoma, cardiovascular disease, hypertension, or acute or unstable medical conditions * Taking of anticonvulsants, antihypertensive agents, medication with sympathomimetic activity, psychotropic medications, monoamine oxidase inhibitor * Immediate need for stimulant discontinuation due to tolerability problems * Previous participation in an atomoxetine study, or unresponsive to atomoxetine, or intolerable side effects to atomoxetine

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Attention Deficit Hyperactivity Disorder-Rating Scale (ADHD-RS-IV) Parent Version: Investigator Administered and Scored - Total Score at Week 10 EndpointBaseline, 10 weeksMeasures the 18 symptoms contained in the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition, Text Revision (DSM-IV-TR) diagnosis of Attention-Deficit/Hyperactivity Disorder (ADHD). Individual item scores range from 0 (none/never or rarely) to 3 (severe/very often). Total scores range from 0 to 54. Higher score indicates greater severity of disease. Least squares means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.
Change From Baseline in ADHD-RS-IV Parent Version: Investigator Administered and Scored - Total Score at Week 2 EndpointBaseline, 2 weeksMeasures the 18 symptoms contained in the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition, Text Revision (DSM-IV-TR) diagnosis of ADHD. Individual item scores range from 0 (none/never or rarely) to 3 (severe/very often). Total scores range from 0 to 54. Higher score indicates greater severity of disease. Least squares means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.

Secondary

MeasureTime frameDescription
Change From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale- Parent Total Score at Week 10 EndpointBaseline, 10 weeksThe GIPD scale is a 5-item rating of ADHD-related difficulties (overall difficulties perceived in the morning, during school, during homework, in the evening, and over the entire day and night). For each item, difficulties during the past week are rated on a 7-point scale (1 = normal, not difficult at all; 7 = extremely difficult) and the mean of the 5 items is reported. Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.
Change From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale- Investigator Total Score at Week 10 EndpointBaseline, 10 weeksThe GIPD scale is a 5-item rating of ADHD-related difficulties (overall difficulties perceived in the morning, during school, during homework, in the evening, and over the entire day and night). For each item, difficulties during the past week are rated on a 7-point scale (1 = normal, not difficult at all; 7 = extremely difficult) and the mean of the 5 items is reported. Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.
Change From Baseline in Clinical Global Impression Severity (CGI-S) Rating Scale - Total Score at Week 10 EndpointBaseline, 10 weeksThe CGI- S is a single-item clinician rating of the severity of the participant's ADHD symptoms in relation to the clinician's total experience of ADHD participants. Severity is rated on a seven-point scale (1 = normal, not ill at all; 7 = among the most extremely ill patients). Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.
Change From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointBaseline, 10 weeksCHIP-CE-PRF consists of 76 items. The majority of items assess frequency of activities or feelings using a five-point response format. Standard scores (t-value) were established, with all domains and subdomains having a mean score of 50 and standard deviation (SD) of 10. Standard scores are expressed in SD units. T-score=\[(Score- Mean for the reference population \[Ref Pop\])\*10/SD for the Ref Pop\]+50. Higher scores mean better quality of life. Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.
Change From Baseline in Treatment Satisfaction Preference Survey Mean Score at Week 10 EndpointBaseline, 10 weeksThe Treatment Satisfaction Survey consists of a five-question survey each rated on a 5 point scale (0=very satisfied/very likely, 4=very dissatisfied/not at all likely). The mean score over the items is reported.
Change From Baseline in Pulse Rate at Week 6 and Week 14 EndpointBaseline, 6 weeks, 14 weeks
Change From Baseline in Body Weight at Week 6 and Week 14 EndpointBaseline, 6 weeks, 14 weeks
Number of Participants With Suicidal Behaviors and IdeationsBaseline through 14 weeksColumbia Suicide Rating Scale (C-SSRS): scale capturing occurrence, severity, and frequency of suicide-related thoughts and behaviors. Number of participants with suicidal behaviors and ideations are provided. Suicidal behavior: a yes answer to any of 5 suicidal behavior questions: preparatory acts or behavior, aborted attempt, interrupted attempt, actual attempt, and completed suicide. Suicidal ideation: a yes answer to any one of 5 suicidal ideation questions, which includes wish to be dead, and 4 different categories of active suicidal ideation.
Change From Baseline in Blood Pressure (BP) at Week 6 and Week 14 EndpointBaseline, 6 weeks, 14 weeks
Change From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale - Patient Total Score at Week 10 EndpointBaseline, 10 weeksThe GIPD scale is a 5-item rating of ADHD-related difficulties (overall difficulties perceived in the morning, during school, during homework, in the evening, and over the entire day and night). For each item, difficulties during the past week are rated on a 7-point scale (1 = normal, not difficult at all; 7 = extremely difficult) and the mean of the 5 items is reported. Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.

Countries

Australia, Mexico, United Kingdom

Participant flow

Pre-assignment details

Study Period II was a 10-week treatment period. Study Period III was a 4-week period, during which participants continued on atomoxetine treatment in the same dose as given at the end of Study Period II or in a higher dose, up to a maximum of 1.8 mg/kg/day.

Participants by arm

ArmCount
Slow Switching Group
Switch from full stimulant dose to atomoxetine 1.2mg/kg/day, PO, during 10 weeks then continue treatment up to 1.8mg/kg/day, PO to 14 weeks.
57
Fast Switching Group
Switch from full stimulant dose to atomoxetine 1.2mg/kg/day, PO, during 2 weeks. Continue atomoxetine 1.2 mg/kg/day to 10 weeks, followed by atomoxetine up to 1.8 mg/kg/day to 14 weeks.
54
Total111

Withdrawals & dropouts

PeriodReasonFG000FG001
Study Period IIAdverse Event34
Study Period IILack of Efficacy06
Study Period IINo drug administered01
Study Period IIParent/Caregiver Decision30
Study Period IIProtocol Violation63
Study Period IIWithdrawal by Subject10
Study Period IIIAdverse Event10
Study Period IIILack of Efficacy10
Study Period IIIParent/Caregiver Decision01
Study Period IIIPhysician Decision01
Study Period IIIProtocol Violation11

Baseline characteristics

CharacteristicTotalSlow Switching GroupFast Switching Group
Age Continuous11.5 years
STANDARD_DEVIATION 2.38
11.1 years
STANDARD_DEVIATION 2.51
12.0 years
STANDARD_DEVIATION 2.16
Attention Deficit Hyperactivity Disorder (ADHD) subtype
Combined
74 participants38 participants36 participants
Attention Deficit Hyperactivity Disorder (ADHD) subtype
Hyperactive/Impulsive
4 participants1 participants3 participants
Attention Deficit Hyperactivity Disorder (ADHD) subtype
Inattentive
32 participants17 participants15 participants
Attention Deficit Hyperactivity Disorder (ADHD) subtype
Not otherwise categorized
1 participants1 participants0 participants
Race/Ethnicity, Customized
African
1 Participants1 Participants0 Participants
Race/Ethnicity, Customized
Caucasian
89 Participants46 Participants43 Participants
Race/Ethnicity, Customized
Hispanic
21 Participants10 Participants11 Participants
Region of Enrollment
Australia
12 participants7 participants5 participants
Region of Enrollment
Mexico
20 participants10 participants10 participants
Region of Enrollment
Portugal
7 participants3 participants4 participants
Region of Enrollment
Spain
57 participants29 participants28 participants
Region of Enrollment
United Kingdom
15 participants8 participants7 participants
Sex: Female, Male
Female
18 Participants8 Participants10 Participants
Sex: Female, Male
Male
93 Participants49 Participants44 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
35 / 5730 / 54
serious
Total, serious adverse events
1 / 571 / 54

Outcome results

Primary

Change From Baseline in ADHD-RS-IV Parent Version: Investigator Administered and Scored - Total Score at Week 2 Endpoint

Measures the 18 symptoms contained in the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition, Text Revision (DSM-IV-TR) diagnosis of ADHD. Individual item scores range from 0 (none/never or rarely) to 3 (severe/very often). Total scores range from 0 to 54. Higher score indicates greater severity of disease. Least squares means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.

Time frame: Baseline, 2 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Slow Switching GroupChange From Baseline in ADHD-RS-IV Parent Version: Investigator Administered and Scored - Total Score at Week 2 Endpoint-8.0 units on a scaleStandard Error 1
Fast Switching GroupChange From Baseline in ADHD-RS-IV Parent Version: Investigator Administered and Scored - Total Score at Week 2 Endpoint-8.1 units on a scaleStandard Error 1
p-value: 0.92795% CI: [-2.9, 2.6]Mixed Models Analysis
Primary

Change From Baseline in Attention Deficit Hyperactivity Disorder-Rating Scale (ADHD-RS-IV) Parent Version: Investigator Administered and Scored - Total Score at Week 10 Endpoint

Measures the 18 symptoms contained in the Diagnostic and Statistical Manual of Mental Disorders Fourth Edition, Text Revision (DSM-IV-TR) diagnosis of Attention-Deficit/Hyperactivity Disorder (ADHD). Individual item scores range from 0 (none/never or rarely) to 3 (severe/very often). Total scores range from 0 to 54. Higher score indicates greater severity of disease. Least squares means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.

Time frame: Baseline, 10 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Slow Switching GroupChange From Baseline in Attention Deficit Hyperactivity Disorder-Rating Scale (ADHD-RS-IV) Parent Version: Investigator Administered and Scored - Total Score at Week 10 Endpoint-14.3 units on a scaleStandard Error 1.2
Fast Switching GroupChange From Baseline in Attention Deficit Hyperactivity Disorder-Rating Scale (ADHD-RS-IV) Parent Version: Investigator Administered and Scored - Total Score at Week 10 Endpoint-15.0 units on a scaleStandard Error 1.2
p-value: 0.69295% CI: [-4, 2.6]Mixed Models Analysis
Secondary

Change From Baseline in Blood Pressure (BP) at Week 6 and Week 14 Endpoint

Time frame: Baseline, 6 weeks, 14 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment, and with both baseline and week 6 or 14 values.

ArmMeasureGroupValue (MEAN)Dispersion
Slow Switching GroupChange From Baseline in Blood Pressure (BP) at Week 6 and Week 14 EndpointWeek 6 Change Diastolic BP (n=52, 52)1.5 mmHgStandard Deviation 7.21
Slow Switching GroupChange From Baseline in Blood Pressure (BP) at Week 6 and Week 14 EndpointWeek 6 Change Systolic BP (n=52, 52)1.2 mmHgStandard Deviation 7.74
Slow Switching GroupChange From Baseline in Blood Pressure (BP) at Week 6 and Week 14 EndpointWeek 14 Change Diastolic BP (n=43, 40)2.3 mmHgStandard Deviation 7.58
Slow Switching GroupChange From Baseline in Blood Pressure (BP) at Week 6 and Week 14 EndpointWeek 14 Change Systolic BP (n= 43, 40)-0.2 mmHgStandard Deviation 8.62
Fast Switching GroupChange From Baseline in Blood Pressure (BP) at Week 6 and Week 14 EndpointWeek 14 Change Systolic BP (n= 43, 40)2.6 mmHgStandard Deviation 9
Fast Switching GroupChange From Baseline in Blood Pressure (BP) at Week 6 and Week 14 EndpointWeek 6 Change Diastolic BP (n=52, 52)1.9 mmHgStandard Deviation 8.31
Fast Switching GroupChange From Baseline in Blood Pressure (BP) at Week 6 and Week 14 EndpointWeek 14 Change Diastolic BP (n=43, 40)3.1 mmHgStandard Deviation 7.04
Fast Switching GroupChange From Baseline in Blood Pressure (BP) at Week 6 and Week 14 EndpointWeek 6 Change Systolic BP (n=52, 52)0.5 mmHgStandard Deviation 9.05
Secondary

Change From Baseline in Body Weight at Week 6 and Week 14 Endpoint

Time frame: Baseline, 6 weeks, 14 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment, and with both baseline and week 6 or 14 values.

ArmMeasureGroupValue (MEAN)Dispersion
Slow Switching GroupChange From Baseline in Body Weight at Week 6 and Week 14 EndpointWeek 6 Change (n=52, 52)-0.4 kilogramStandard Deviation 1.12
Slow Switching GroupChange From Baseline in Body Weight at Week 6 and Week 14 EndpointWeek 14 Change (n=43, 40)0.6 kilogramStandard Deviation 1.64
Fast Switching GroupChange From Baseline in Body Weight at Week 6 and Week 14 EndpointWeek 6 Change (n=52, 52)0.6 kilogramStandard Deviation 1.25
Fast Switching GroupChange From Baseline in Body Weight at Week 6 and Week 14 EndpointWeek 14 Change (n=43, 40)1.1 kilogramStandard Deviation 2.15
Secondary

Change From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 Endpoint

CHIP-CE-PRF consists of 76 items. The majority of items assess frequency of activities or feelings using a five-point response format. Standard scores (t-value) were established, with all domains and subdomains having a mean score of 50 and standard deviation (SD) of 10. Standard scores are expressed in SD units. T-score=\[(Score- Mean for the reference population \[Ref Pop\])\*10/SD for the Ref Pop\]+50. Higher scores mean better quality of life. Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.

Time frame: Baseline, 10 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Slow Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointSatisfaction Domain3.4 standard deviation unitsStandard Error 1.6
Slow Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointRisk Avoidance Domain4.9 standard deviation unitsStandard Error 1.4
Slow Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointComfort Domain0.7 standard deviation unitsStandard Error 1.2
Slow Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointResilience Domain1.8 standard deviation unitsStandard Error 1.4
Slow Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointAchievement Domain3.5 standard deviation unitsStandard Error 1.7
Fast Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointResilience Domain-1.0 standard deviation unitsStandard Error 1.4
Fast Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointAchievement Domain-1.2 standard deviation unitsStandard Error 1.6
Fast Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointSatisfaction Domain2.2 standard deviation unitsStandard Error 1.6
Fast Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointComfort Domain4.1 standard deviation unitsStandard Error 1.1
Fast Switching GroupChange From Baseline in Child Health and Illness Profile Child Edition-Parent Report Form (CHIP-CE-PRF) - Domain Scores at Week 10 EndpointRisk Avoidance Domain2.9 standard deviation unitsStandard Error 1.4
Secondary

Change From Baseline in Clinical Global Impression Severity (CGI-S) Rating Scale - Total Score at Week 10 Endpoint

The CGI- S is a single-item clinician rating of the severity of the participant's ADHD symptoms in relation to the clinician's total experience of ADHD participants. Severity is rated on a seven-point scale (1 = normal, not ill at all; 7 = among the most extremely ill patients). Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.

Time frame: Baseline, 10 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Slow Switching GroupChange From Baseline in Clinical Global Impression Severity (CGI-S) Rating Scale - Total Score at Week 10 Endpoint-1.7 units on a scaleStandard Error 0.2
Fast Switching GroupChange From Baseline in Clinical Global Impression Severity (CGI-S) Rating Scale - Total Score at Week 10 Endpoint-1.7 units on a scaleStandard Error 0.2
p-value: 0.89895% CI: [-0.4, 0.4]Mixed Models Analysis
Secondary

Change From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale- Investigator Total Score at Week 10 Endpoint

The GIPD scale is a 5-item rating of ADHD-related difficulties (overall difficulties perceived in the morning, during school, during homework, in the evening, and over the entire day and night). For each item, difficulties during the past week are rated on a 7-point scale (1 = normal, not difficult at all; 7 = extremely difficult) and the mean of the 5 items is reported. Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.

Time frame: Baseline, 10 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Slow Switching GroupChange From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale- Investigator Total Score at Week 10 Endpoint-1.3 units on a scaleStandard Error 0.2
Fast Switching GroupChange From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale- Investigator Total Score at Week 10 Endpoint-1.2 units on a scaleStandard Error 0.2
p-value: 0.52695% CI: [-0.3, 0.6]Mixed Models Analysis
Secondary

Change From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale- Parent Total Score at Week 10 Endpoint

The GIPD scale is a 5-item rating of ADHD-related difficulties (overall difficulties perceived in the morning, during school, during homework, in the evening, and over the entire day and night). For each item, difficulties during the past week are rated on a 7-point scale (1 = normal, not difficult at all; 7 = extremely difficult) and the mean of the 5 items is reported. Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.

Time frame: Baseline, 10 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Slow Switching GroupChange From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale- Parent Total Score at Week 10 Endpoint-1.0 units on a scaleStandard Error 0.2
Fast Switching GroupChange From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale- Parent Total Score at Week 10 Endpoint-0.8 units on a scaleStandard Error 0.2
p-value: 0.51795% CI: [-0.3, 0.7]Mixed Models Analysis
Secondary

Change From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale - Patient Total Score at Week 10 Endpoint

The GIPD scale is a 5-item rating of ADHD-related difficulties (overall difficulties perceived in the morning, during school, during homework, in the evening, and over the entire day and night). For each item, difficulties during the past week are rated on a 7-point scale (1 = normal, not difficult at all; 7 = extremely difficult) and the mean of the 5 items is reported. Least square means are adjusted for baseline, site, treatment, visit and treatment by visit interaction.

Time frame: Baseline, 10 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Slow Switching GroupChange From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale - Patient Total Score at Week 10 Endpoint-0.6 units on a scaleStandard Error 0.2
Fast Switching GroupChange From Baseline in Global Impression of Perceived Difficulties (GIPD) Rating Scale - Patient Total Score at Week 10 Endpoint-0.4 units on a scaleStandard Error 0.2
p-value: 0.45695% CI: [-0.3, 0.7]Mixed Models Analysis
Secondary

Change From Baseline in Pulse Rate at Week 6 and Week 14 Endpoint

Time frame: Baseline, 6 weeks, 14 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment, and with both baseline and week 6 or 14 values.

ArmMeasureGroupValue (MEAN)Dispersion
Slow Switching GroupChange From Baseline in Pulse Rate at Week 6 and Week 14 EndpointWeek 6 Change (n=52, 52)6.8 beats per minuteStandard Deviation 11.12
Slow Switching GroupChange From Baseline in Pulse Rate at Week 6 and Week 14 EndpointWeek 14 Change (n=43, 40)3.4 beats per minuteStandard Deviation 12.69
Fast Switching GroupChange From Baseline in Pulse Rate at Week 6 and Week 14 EndpointWeek 6 Change (n=52, 52)4.2 beats per minuteStandard Deviation 8.83
Fast Switching GroupChange From Baseline in Pulse Rate at Week 6 and Week 14 EndpointWeek 14 Change (n=43, 40)5.9 beats per minuteStandard Deviation 10.17
Secondary

Change From Baseline in Treatment Satisfaction Preference Survey Mean Score at Week 10 Endpoint

The Treatment Satisfaction Survey consists of a five-question survey each rated on a 5 point scale (0=very satisfied/very likely, 4=very dissatisfied/not at all likely). The mean score over the items is reported.

Time frame: Baseline, 10 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment. Last Observation Carried Forward (LOCF).

ArmMeasureValue (MEAN)Dispersion
Slow Switching GroupChange From Baseline in Treatment Satisfaction Preference Survey Mean Score at Week 10 Endpoint-0.7 units on a scaleStandard Deviation 1.16
Fast Switching GroupChange From Baseline in Treatment Satisfaction Preference Survey Mean Score at Week 10 Endpoint-0.5 units on a scaleStandard Deviation 1.11
Secondary

Number of Participants With Suicidal Behaviors and Ideations

Columbia Suicide Rating Scale (C-SSRS): scale capturing occurrence, severity, and frequency of suicide-related thoughts and behaviors. Number of participants with suicidal behaviors and ideations are provided. Suicidal behavior: a yes answer to any of 5 suicidal behavior questions: preparatory acts or behavior, aborted attempt, interrupted attempt, actual attempt, and completed suicide. Suicidal ideation: a yes answer to any one of 5 suicidal ideation questions, which includes wish to be dead, and 4 different categories of active suicidal ideation.

Time frame: Baseline through 14 weeks

Population: Intention to treat (ITT) population includes all randomized participants who received at least 1 dose of study drug, that is, they have a non-missing dose for atomoxetine study treatment.

ArmMeasureValue (NUMBER)
Slow Switching GroupNumber of Participants With Suicidal Behaviors and Ideations1 participants
Fast Switching GroupNumber of Participants With Suicidal Behaviors and Ideations1 participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026