A Phase 4, Randomized, Double-Blind, Multicenter, Placebo-Controlled, Parallel-Group Study of the Efficacy and Safety of SPN-812 in Preschool-Age Children (4 to 5 Years Old) With Attention-Deficit/Hyperactivity Disorder (ADHD)
This study will evaluate the efficacy and safety of SPN-812 (viloxazine extended release) in children 4 to 5 years of age with ADHD.
• Is male or female 4 years 0 months of age to less than or equal to 5 years 9 months of age at Visit 1 (Screening) and considered medically healthy.
• Subject's parent(s) or legal guardian(s)/representative(s) is (are) willing and able to provide written informed consent before completing any study related procedures.
• Has a primary diagnosis of ADHD according to DSM-IV-TR criteria and confirmed with the Kiddie Schedule for Affective Disorders and Schizophrenia - Present and Lifetime Version (K-SADS-PL).
• Has an ADHD-RS-IV-P Total Score of ≥ 28 (males) or ≥ 24 (females) at Visit 1 (Screening) and at Visit 2 (Baseline).
• Has a CGI-S score of ≥ 4 (moderate or worse) at Visit 1 (Screening) and at Visit 2 (Baseline).
• Has undergone an adequate course of non-pharmacologic treatment or is having symptoms severe enough to warrant pharmacologic treatment without prior non-pharmacologic treatment.
• Is participating in a structured group activity (e.g., preschool, kindergarten, sports, Sunday school, summer camp or childcare program) at least 2 days a week during study so as to assess symptoms and impairment in a setting outside the home.
• Has not initiated any behavioral intervention/therapy within 30 days of Visit 1 (Screening) and does not plan to initiate any new or discontinue any ongoing behavioral intervention/therapy during the study (e.g., subject is eligible if behavioral intervention/therapy is initiated 30 or more days prior to Visit 1 \[Screening\] and continues with a similar duration/frequency throughout their study).
• Subjects who are on ADHD medication at Visit 1 (Screening), but whose ADHD symptoms are not well controlled on current ADHD medication (e.g., meets Inclusion Criterion #4), meet all other inclusion/exclusion criteria, and discontinues ADHD medication at least 7 days prior to the day of Visit 2 (Baseline) are eligible to participate.
⁃ Has no current condition in the opinion of the Investigator that could confound efficacy assessments, safety assessments or increase participant risk.
⁃ Has lived with the same parent(s) or legal guardian(s) or has lived under a shared living arrangement (e.g., joint legal custody) for greater than or equal to 6 months prior to Visit 1 (Screening).
⁃ Has a body weight ≥5th percentile for age and sex at Visit 1 (Screening) and Visit 2 (Baseline).