Neurobiological Basis of Response to Guanfacine Extended Release in Children and Adolescents With ADHD

Completed · Phase 4 · Has a placebo group

Conditions studied: ADHD, Attention Deficit Hyperactivity Disorder

In brief

This study proposes to evaluate the effects of guanfacine extended release on brain activation during fMRI in children and adolescents with ADHD between the ages 8-15 and ADHD subjects randomized to placebo treatment. This study also proposes to collect DNA on study participants, to examine the genetic underpinning of the observed fMRI activation profiles at baseline and in response to treatment. The purpose is to examine polymorphisms of the adrenergic 2A gene (and other related targets) for genetic biomarkers in association with the fMRI findings of this study.

Key facts

Study ID

NCT01709695

Run by

Icahn School of Medicine at Mount Sinai

People needed

27

Starts

2011-03-01

Expected to finish

2013-12-01

Last updated by the study team

2018-02-14

Who can join

Age: 8 and older, up to 15. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Diagnosis of any subtype of ADHD
• Normal findings on physical exam, laboratory studies, vital signs, and ECG
• Weight = 60 kgs or less
• Able to complete study procedures and swallow capsules;
• Willing to commit to the entire visit schedule
• Off treatment or have been discontinued from their previous medication for two weeks.

You may not qualify if…

• Psychiatric comorbidity except Oppositional Defiant Disorder [ODD], Simple Phobia, and dysthymia (unless ongoing medication treatment is required);
• Currently a suicide risk, has previously made a suicide attempt or has a prior history of suicidal behavior;
• Has failed treatment with an adequate trial of an alpha-2 adrenergic agonist;
• Known or suspected allergy, hypersensitivity, or clinically significant intolerance to guanfacine hydrochloride.
• Children may not:
• be treated with systemic medication for a medical or psychiatric illness that have CNS effects or affect cognitive function;
• have a known history or presence of structural cardiac abnormalities, exercise-related cardiac events, or clinically significant bradycardia;
• have orthostatic hypotension or a known history of hypertension;
• have an abnormal ECG that is deemed clinically significant;
• have a history of alcohol or other substance abuse or dependence within the last 6 months;
• use any medications that affect BP or heart rate (excluding the subject's current ADHD medication at screening);
• use another investigational medicinal product or participation in a clinical study within 30 days prior to the baseline visit;
• be significantly overweight based on Center for Disease Control and Prevention Body Mass Index (BMI)-for-age gender specific charts;
• have body weight of less than 25kg;
• have a clinically important abnormality on urine drug and alcohol screen (excluding the subject's current ADHD stimulant, if applicable);
• be female and currently pregnant or lactating;
• have symptoms indicative of a primary sleep disorder.
• have braces or other metal permanently placed within their body.
• be too anxious to tolerate the fMRI procedure, or be claustrophobic.

Where it is running

• Icahn School of Medicine at Mount Sinai — New York, New York, United States

Full record on ClinicalTrials.gov

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