Comparison of Atomoxetine Versus Placebo in Children and Adolescents With ADHD and Comorbid ODD in Germany

A Randomized, Double-Blind Comparison of Atomoxetine Versus Placebo in Children and Adolescents With Attention-Deficit/Hyperactivity Disorder and Comorbid Oppositional Defiant Disorder

A three-arm, randomized, double-blind, placebo-controlled, Phase 4, multicenter study to compare the efficacy and safety of atomoxetine versus placebo in children and adolescents aged 6 through 17 years with attention-deficit/hyperactivity disorder (ADHD) and comorbid oppositional defiant disorder (ODD) who are treated as outpatients in Germany. After an initial 3- to 28-day screening and washout phase, participants will be assigned to double-blind treatment with atomoxetine or placebo. A 2 week up-titration period will be succeeded by a 7 week treatment period at the target dose. The primary efficacy measure will be the Swanson, Nolan and Pelham Rating Scale Revised (SNAP-IV) ODD subscale score.

Inclusion Criteria:

• Male or female outpatients who are at least 6 years of age, and who will not have reached their 18th birthday
• Diagnosis of ADHD and presence of Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) criteria A through C for ODD (NOTE: diagnosis for conduct disorder not exclusionary)
• Normal intelligence
• Able to swallow capsules

Exclusion Criteria:

• Weigh less than 20 kilogram (kg) or more than 90 kg at study entry
• Prior treatment with atomoxetine
• History of seizure disorder, suicidal risk, alcohol or drug abuse within the past 3 months
• History of severe allergies or multiple adverse drug reactions
• Cardiovascular disorders: hypertension, unexplained cardiac signs or symptoms, QT (measure of the time between the start of the Q wave and the end of the T wave in the heart's electrical cycle) prolongation , inherited cardiac disorders