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Study Evaluating the Safety and Efficacy of CLONICEL® to Treat Children and Adolescents With Attention Deficit Hyperactivity Disorder (ADHD)

A Phase III, Dose-Response Evaluation of the Efficacy and Safety of CLONICEL® (Clonidine HCl Sustained Release) vs. Placebo in the Treatment of Children and Adolescents With Attention Deficit Hyperactivity Disorder (ADHD)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00556959
Enrollment
236
Registered
2007-11-12
Start date
2007-10-31
Completion date
2008-08-31
Last updated
2010-03-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Attention Deficit Disorder With Hyperactivity

Keywords

ADHD, Clonidine, Attention Deficit, Hyperactivity, CLONICEL, Addrenex

Brief summary

The purpose of this study is to determine whether CLONICEL® (clonidine HCl sustained release) is a safe and effective treatment for children and adolescents with attention deficit hyperactivity disorder (ADHD).

Detailed description

Clonidine is a centrally acting alpha2 adrenergic agonist that has been used effectively since the early 70s to treat mild to moderate hypertension. In addition to hypertension, clonidine has been evaluated and used extensively for several other indications, including attention deficit hyperactivity disorder (ADHD). An easy to administer clonidine formulation is needed that retains the efficacy of the current oral formulation but has an improved safety profile. The current trial will investigate the safety and efficacy of clonidine delivered from the sustained release formulation of CLONICEL in the treatment of children and adolescents with ADHD.

Interventions

DRUGhigh dose clonidine HCl sustained release

high dose clonidine HCl sustained release tablets for 8 weeks

DRUGlow dose clonidine HCl sustained release

low dose clonidine HCl sustained release tablets for 8 weeks

DRUGplacebo

placebo tablets for 8 weeks

Sponsors

Addrenex Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
6 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

* Male or female between 6 and 17 years of age, inclusive * Diagnosis of ADHD of the hyperactive or combined inattentive/hyperactive subtypes according to DSM-IV criteria * Minimum score of 26 on the ADHDRS-IV questionnaire at Baseline * General good health as judged by the Principal Investigator * Body mass index ≥ 5th percentile of the subject's age group according to the CDC growth chart. * Ability to swallow tablets * General IQ ≥80 as judged by the Principal Investigator * Subject as well as parent/guardian able to sign informed assent or consent form.

Exclusion criteria

* If female of child-bearing potential, pregnant or lactating or does not agree to use a medically acceptable form of birth control, such as hormonal medication, double-barrier method, or IUD * Presence of a clinically significant illness or abnormality on physical examination or clinical laboratory evaluations that, in the opinion of the investigator, would increase the safety risks from clonidine administration or interfere with the ability of the patient to take part in the study. * Presence of clinically significant abnormality on centrally interpreted Electrocardiogram (ECG) readings * History or presence of a concomitant psychiatric disorder requiring psychotropic medication or a severe concomitant Axis I or Axis II disorder that could interfere with study assessments in the judgment of the Principal Investigator * History of concomitant conduct disorder (CD) * History of seizures, except for a single episode of febrile seizure prior to age 2 * History of syncopal episodes * Presence of a disorder that would interfere with the absorption, metabolism, or excretion of clonidine * History of intolerance to clonidine, including any dermatologic reaction to transdermal clonidine * Presence or history of alcohol or drug abuse * Positive drug screen, with the exception of ADHD drugs * Use of any investigational drug within 30 days of study start.

Design outcomes

Primary

MeasureTime frame
ADHDRS-IVWeek 5

Secondary

MeasureTime frame
CPRS-L, CGI-S, and CGI-IWeek 5
Adverse Events, Laboratory Assessments, Vital Signs, and ECGsThroughout Treatment Phase

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026