A 12-Month Open Label Safety Study of Aptensio XR® in Children Ages 4-5 Years Diagnosed With ADHD (EF004)

A 12-Month Open Label Safety Study of Methylphenidate Hydrochloride Extended-Release Capsules (Aptensio XR®) in Children Ages 4-5 Years Diagnosed With Attention-Deficit/Hyperactivity Disorder (ADHD)

The primary objective of this study is to evaluate the long-term safety and tolerability of methylphenidate hydrochloride extended-release capsules (Aptensio XR®) in children aged 4-5 years who have been diagnosed with attention-deficit/hyperactivity disorder (ADHD). Safety and tolerability will be evaluated by assessing treatment-emergent adverse events (TEAEs) blood pressure, pulse, height, weight, electrocardiograms (ECGs), laboratory The primary objective of this study is to evaluate the long-term (12-month) safety and tolerability of Aptensio XR® in children aged 4 to less than 6 years who have been diagnosed with ADHD. Safety and tolerability will be evaluated by assessing treatment-emergent adverse events (TEAEs) blood pressure, pulse, height, weight, electrocardiograms (ECGs), laboratory values and Columbia Suicide Severity Rating Scale (C-SSRS). Disturbances in sleep (quantity and quality) patterns will also be assessed using the Child Sleep Habits Questionnaire (CSHQ). Secondary objectives include assessment of long-term efficacy of Aptensio XR®. Secondary measures include: Investigator administered Attention-Deficit/Hyperactivity Disorder Rating Scale Preschool Version (ADHD-RS-IV Preschool Version) Clinical Global Impressions-Severity Scale (CGI-S ) Connors Early Childhood Behavior-Parent Short form [Conners EC BEH-P(S)]

Investigator administered Attention-Deficit/Hyperactivity Disorder Rating Scale Preschool Version (ADHD-RS-IV Preschool Version) to assess ADHD severity and functioning

This scale provides a global rating of illness severity and improvement during the study. The subject is rated relative to the clinician's past experience with other patients who have the same diagnosis. The CGI-S is rated on a 7-point scale, with the severity of illness scale using a range of responses from 1 (normal) through to 7 (among the most severely ill patients).

Inclusion Criteria: Male and female subjects aged 4 to less than 6 years inclusive at the time consent was given to participate in Prior Studies. New Subjects must be at least 4 years but less than 6 years of age when written consent is given to participate in this trial.

Childress AC, Foehl HC, Newcorn JH, Faraone SV, Levinson B, Adjei AL. Long-Term Treatment With Extended-Release Methylphenidate Treatment in Children Aged 4 to <6 Years. J Am Acad Child Adolesc Psychiatry. 2022 Jan;61(1):80-92. doi: 10.1016/j.jaac.2021.03.019. Epub 2021 Apr 20.