Abstract
The aim of this study was to assess the effectiveness and safety of lisdexamfetamine dimesylate (LDX) in children with attention-deficit/hyperactivity disorder (ADHD). This was a 7-week, open-label study evaluating 20, 30, 40, 50, 60, or 70 mg/day LDX in 318 children aged 6-12 years with ADHD. The ADHD Rating Scale IV (ADHD-RS-IV) was the primary efficacy assessment. Secondary measures included the Clinical Global Impressions-Improvement (CGI-I), Expression and Emotion Scale for Children (EESC), and Behavior Rating Inventory of Executive Function (BRIEF). Safety assessments included treatment-emergent adverse events (TEAEs), vital signs, and electrocardiograms. At end point, mean (standard deviation [SD]) improvement from baseline in ADHD-RS-IV total score was 28.6 (10.9) (p < 0.0001). Most subjects (89.9%) were rated "improved" (i.e., CGI-I 1 or 2). Improvements from baseline were observed in the EESC total and subscale scores (p < or = 0.0002). LDX treatment resulted in significant improvement on the Global Executive Composite, Behavioral Regulation, and Metacognition indices of the BRIEF (p < 0.0001). TEAEs (incidences > or =10%) were decreased appetite, decreased weight, irritability, insomnia, headache, upper abdominal pain, and initial insomnia. LDX was effective and generally well tolerated with a safety profile consistent with long-acting stimulant use. There was overall improvement in ADHD symptoms and executive function measures and no worsening of emotional expression measures. clinicaltrials.gov Identifier: NCT00500071.
Published Version
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