- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00429273
Single Versus Combination Medication Treatment for Children With Attention Deficit Hyperactivity Disorder (Project1)
An Eight-Week, Randomized, Double-Blind Comparison of Guanfacine, Focalin XR, and the Combination, With a Twelve Month Open-Label Extension for the Treatment of ADHD in Pediatric Subjects Aged 7 to 14 Years
Study Overview
Status
Intervention / Treatment
Detailed Description
Attention deficit hyperactivity disorder (ADHD) is one of the most common childhood mental disorders. Children with ADHD have impaired functioning in multiple settings, including home and school. They also have difficulty relating with peers. If left untreated, the disorder may cause adverse effects that can last into adolescence and adulthood. Stimulant medications, such as methylphenidate, are effective in reducing ADHD symptoms on a short-term basis. However, few long-term benefits in academic or general functioning from current ADHD therapies have been demonstrated. Focalin XR is a stimulant medication that is FDA-approved for treating ADHD. Guanfacine is another medication that is currently approved for the treatment of hypertension, but has long been used for treating ADHD. This study will determine the effectiveness of a combination of Focalin XR and guanfacine in enhancing cognitive functioning and improving the long-term benefit of ADHD treatment.
Participants in this study will be randomly assigned to one of three treatment regimens: Methylphenidate (Focalin XR) and placebo; guanfacine and placebo; or Focalin XR and guanfacine. The study will be conducted in two phases: an 8-week double-blind treatment phase and a 12-month open-label treatment phase. In Phase I, one third of participants will receive placebo for the initial 4 weeks, followed by Focalin XR alone for the remaining 4 weeks. All other participants will receive their assigned medications for the full 8 weeks. All participants will attend two study visits prior to beginning treatment and one study visit per week throughout Phase I. At the end of Phase I, treatment assignments will be unblinded. Participants who experienced adequate improvement with their assigned treatment will then continue in Phase II on the same medication(s) for an additional 12 months. Participants will attend study visits once per month until the end of the study. Study visits will include self-report measures, clinical assessments, and cognitive testing. Participants will also undergo four electroencephalography (EEG) tests and two fMRI scans over the course of the study. All Phase II participants will receive a follow-up telephone call 1 month after the final study visit.
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
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California
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Los Angeles, California, United States, 90095
- University of California Los Angeles
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Diagnosis of DSM-IV ADHD by K-SADS-PL and confirmed by clinical interview
- Clinical Global Impression-Severity score of at least 4 for ADHD
- Resided with primary caretaker for at least 6 months prior to study entry
Exclusion Criteria:
- History of autism, pervasive developmental disorder, chronic tic disorder, psychosis, or bipolar disorder
- Current major depression or panic disorder
- Systolic or diastolic blood pressure at screening greater than the 95th percentile or less than the 5th percentile for age and body mass index (BMI)
- Any medical condition that might make stimulant or alpha agonist therapy medically inadvisable
- Need for chronic use of other medications with central nervous system effects
- Pregnant, breastfeeding, or beyond menarche and has a positive urine pregnancy test
- History of structural heart defects, syncope, or fainting while exercising
- Clinically significant cardiac abnormality as determined by echocardiogram (ECG) at study entry
- Mental retardation as determined by clinical functional assessment and an IQ estimate of less than 70 based on Wechsler Adult Intelligence Scale (WAIS) subtests
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Group 1: Guan-Guan+Placebo
weeks 1-4: Guanfacine weeks 5-8: Guanfacine + Placebo
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Week 1: 0.5 mg twice daily; Week 2: 1 mg twice daily; Week 3: 1.5 mg twice daily; Weeks 4 through 8: best dose as determined by efficacy measures
Other Names:
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Active Comparator: Group 2: Placebo-Placebo+DMPH
weeks 1-4: Placebo weeks 5-8: Placebo+DMPH
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Participants less than 25 kg will receive 10 mg once daily for Week 5, 20 mg once daily for Week 6, and 30 mg once daily for Week 7. Subjects greater than 25 kg will receive 20 mg once daily for Week 5, 30 mg once daily for Week 6, 40 mg once daily for Week 7, and best doses as determined by efficacy measures for Week 8.
Other Names:
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Experimental: Group 3: Guan-Guan+DMPH (Comb)
weeks 1-4: Guanfacine weeks 5-8: Guanfacine+DMPH
|
Week 1: 0.5 mg twice daily; Week 2: 1 mg twice daily; Week 3: 1.5 mg twice daily; Weeks 4 through 8: best dose as determined by efficacy measures
Other Names:
Participants less than 25 kg will receive 10 mg once daily for Week 5, 20 mg once daily for Week 6, and 30 mg once daily for Week 7. Subjects greater than 25 kg will receive 20 mg once daily for Week 5, 30 mg once daily for Week 6, 40 mg once daily for Week 7, and best doses as determined by efficacy measures for Week 8.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
ADHD IV Rating Scale (Attention Deficit Hyperactivity Disorder Rating Scale)
Time Frame: Measured at baseline Week 4 and Week 8
|
The primary clinical efficacy variable for treatment was the ADHD-RS-IV (Attention-Deficit/Hyperactivity Disorder Rating Scale) Total Score and two sub-scales (Inattentive and Hyperactive-Impulsive ). The rating scale has 18 questions with answer options: None (0), Mild (1), Moderate (2) and Severe (3). Min 0; max 3. Scores are obtained by summing each item; The higher the score, the worse the outcome. Total score range: 0-54 Total Inattentive score range: 0-27 Total Hyperactive/Impulsive score range: 0-27 |
Measured at baseline Week 4 and Week 8
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: James T. McCracken, MD, University of California, Los Angeles
- Study Director: James J. McGough, MD, University of California, Los Angeles
Publications and helpful links
General Publications
- Michelini G, Lenartowicz A, Vera JD, Bilder RM, McGough JJ, McCracken JT, Loo SK. Electrophysiological and Clinical Predictors of Methylphenidate, Guanfacine, and Combined Treatment Outcomes in Children With Attention-Deficit/Hyperactivity Disorder. J Am Acad Child Adolesc Psychiatry. 2022 Aug 10:S0890-8567(22)01229-1. doi: 10.1016/j.jaac.2022.08.001. Online ahead of print.
- Michelini G, Lenartowicz A, Diaz-Fong JP, Bilder RM, McGough JJ, McCracken JT, Loo SK. Methylphenidate, Guanfacine, and Combined Treatment Effects on Electroencephalography Correlates of Spatial Working Memory in Attention-Deficit/Hyperactivity Disorder. J Am Acad Child Adolesc Psychiatry. 2022 Aug 10:S0890-8567(22)01228-X. doi: 10.1016/j.jaac.2022.06.017. Online ahead of print.
- Sayer GR, McGough JJ, Levitt J, Cowen J, Sturm A, Castelo E, McCracken JT. Acute and Long-Term Cardiovascular Effects of Stimulant, Guanfacine, and Combination Therapy for Attention-Deficit/Hyperactivity Disorder. J Child Adolesc Psychopharmacol. 2016 Dec;26(10):882-888. doi: 10.1089/cap.2015.0264. Epub 2016 Aug 2.
- Loo SK, Bilder RM, Cho AL, Sturm A, Cowen J, Walshaw P, Levitt J, Del'Homme M, Piacentini J, McGough JJ, McCracken JT. Effects of d-Methylphenidate, Guanfacine, and Their Combination on Electroencephalogram Resting State Spectral Power in Attention-Deficit/Hyperactivity Disorder. J Am Acad Child Adolesc Psychiatry. 2016 Aug;55(8):674-682.e1. doi: 10.1016/j.jaac.2016.04.020. Epub 2016 May 21.
- Bilder RM, Loo SK, McGough JJ, Whelan F, Hellemann G, Sugar C, Del'Homme M, Sturm A, Cowen J, Hanada G, McCracken JT. Cognitive Effects of Stimulant, Guanfacine, and Combined Treatment in Child and Adolescent Attention-Deficit/Hyperactivity Disorder. J Am Acad Child Adolesc Psychiatry. 2016 Aug;55(8):667-73. doi: 10.1016/j.jaac.2016.05.016. Epub 2016 Jun 7.
- McCracken JT, McGough JJ, Loo SK, Levitt J, Del'Homme M, Cowen J, Sturm A, Whelan F, Hellemann G, Sugar C, Bilder RM. Combined Stimulant and Guanfacine Administration in Attention-Deficit/Hyperactivity Disorder: A Controlled, Comparative Study. J Am Acad Child Adolesc Psychiatry. 2016 Aug;55(8):657-666.e1. doi: 10.1016/j.jaac.2016.05.015. Epub 2016 Jun 3.
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Mental Disorders
- Nervous System Diseases
- Neurologic Manifestations
- Dyskinesias
- Attention Deficit and Disruptive Behavior Disorders
- Neurodevelopmental Disorders
- Attention Deficit Disorder with Hyperactivity
- Hyperkinesis
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Antihypertensive Agents
- Adrenergic alpha-2 Receptor Agonists
- Adrenergic alpha-Agonists
- Adrenergic Agonists
- Neurotransmitter Uptake Inhibitors
- Membrane Transport Modulators
- Dopamine Agents
- Dopamine Uptake Inhibitors
- Central Nervous System Stimulants
- Methylphenidate
- Guanfacine
- Dexmethylphenidate Hydrochloride
Other Study ID Numbers
- P50MH077248-01 (U.S. NIH Grant/Contract)
- 10-000453 (Other Identifier: Office for Protection of Human Subjects)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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