Conditions: Attention Deficit Hyperactivity Disorder
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 163
Healthy volunteers: no

Brief summary:
This Phase 3 pivotal efficacy trial will examine the effects of HLD200 (methylphenidate) in patients aged 6-12 years with ADHD in a naturalistic setting. Following a screening/washout period (Visit 1), subjects will randomized to double-blind placebo or HLD200 for a period of 3 weeks (Visits 2-5) before assessing clinical study endpoints at last study visit.

Detailed description:
To address the unmet need for early morning ADHD symptom control, Ironshore has developed a novel drug delivery system that incorporates the active ingredient methylphenidate HCl in a delayed/extended release formulation. This formulation provides a controlled, approximately 8-hour delay in initial drug release, followed by a subsequent controlled rate of drug release throughout the day. The goal of this system is to enable nighttime dosing of methylphenidate to provide control of ADHD symptoms at the beginning of the next morning (immediately upon awakening) and throughout the remainder of the day.

At Visit 2, Baseline Visit), subjects were randomized to receive either HLD200 or placebo and instructed to begin dosing at 40 mg each evening (8:00 pm ±30 minutes) for 1 week, with scheduled titration, as medically indicated and tolerated, over the subsequent 2 weeks to 60 mg (Visit 3) and 80 mg (Visit 4) and/or a dose not to exceed 3.7 mg/kg (based on the subject's most recently assessed weight). Following dose escalation above 40 mg (i.e., after Visit 3), subjects were permitted to reduce the dose by 1 step (i.e., from 60 to 40 mg or from 80 to 60 mg), if necessary, for safety or tolerability. Subjects who were unable to tolerate a dose of at least 40 mg during the final (third) week of treatment, from Visit 4 to 5, were discontinued. Subjects were also permitted to adjust the timing of the evening dosing at Visits 3 and 4 in increments of 30 to 60 minutes/week to achieve optimal morning control of observed ADHD symptoms; however, the dose was not to be taken any later than 9:30 pm or any earlier than 6:30 pm, regardless of the ±30-minute dosing window.

Arms:
arm 1: Experimental: HLD200 (methylphenidate)

The investigational drug for this study is HLD200 MPH MR capsules comprised of the active pharmaceutical ingredient (MPH) in a dual-coated drug-layered core. Following a minimum 72-hour washout, subjects will be randomized (1:1) to double-blind HLD200 to be taken once daily during the evening for a period of 3-weeks prior to testing. arm 2: Placebo capsules will be composed of microcrystalline cellulose beads in place of MPH containing beads found in the HLD200 capsules. Following a minimum 72-hour washout, subjects will be randomized (1:1) to double-blind placebo to be taken once daily during the evening for a period of 3-weeks prior to testing.

Interventions: intervention 1: HLD200 methylphenidate hydrochloride (MPH) Capsules intervention 2: Placebo
Intervention descriptions: intervention 1: HLD200 Doses: 40, 60 or 80 mg intervention 2: None

Protocol document: