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SPD503 (Guanfacine Hydrochloride) in ADHD Plus Oppositional Symptoms
This study has been completed.
Sponsored by: Shire Pharmaceutical Development
Information provided by: Shire Pharmaceutical Development
ClinicalTrials.gov Identifier: NCT00367835
  Purpose

To assess efficacy and safety of SPD503(guanfacine hydrochloride) in subjects with ADHD and oppositional symptoms.


Condition Intervention Phase
ADHD
Drug: guanfacine hydrochloride
Drug: Placebo
Phase III

Drug Information available for: Guanfacine Guanfacine hydrochloride
U.S. FDA Resources
Study Type: Interventional
Study Design: Treatment, Randomized, Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Placebo Control, Parallel Assignment, Safety/Efficacy Study
Official Title: A Double-Blind, Randomized, Multi-Center, Flexible Dose Study Evaluating the Efficacy and Safety of SPD503 (Guanfacine Hydrochloride) in Children Aged 6-12 With Symptoms of Oppositionality and a Diagnosis of Attention Deficit/Hyperactivity Disorder

Further study details as provided by Shire Pharmaceutical Development:

Primary Outcome Measures:
  • Score on the oppositional subscale of the CPRS-R:L at 8 weeks [ Time Frame: 8 weeks ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • ADHD-RS [ Time Frame: As Change from Baseline (approximately 13 weeks) ] [ Designated as safety issue: No ]
  • CGI-S [ Time Frame: As Change from Baseline (approximately 8 weeks) ] [ Designated as safety issue: No ]
  • CGI-I [ Time Frame: As Change from Baseline (approximately 8 weeks) ] [ Designated as safety issue: No ]
  • Conduct subscale of NYPRS-S [ Time Frame: As Change from Baseline (approximately 8 weeks) ] [ Designated as safety issue: No ]
  • PSI/SF [ Time Frame: As Change from Baseline (approximately 8 weeks) ] [ Designated as safety issue: No ]
  • MSS at 8 weeks [ Time Frame: One administration at week 8 ] [ Designated as safety issue: No ]
  • Safety and tolerability based on treatment-emergent adverse events, clinical laboratory tests, physical examinations, vital signs, and electrocardiograms [ Time Frame: 8 weeks ] [ Designated as safety issue: Yes ]

Estimated Enrollment: 130
Study Start Date: September 2006
Study Completion Date: January 2008
Primary Completion Date: December 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
1: Experimental Drug: guanfacine hydrochloride
Subjects will start at 1mg tablet each morning and will subsequently be titrated (in 1mg weekly increments) to optimal dose based upon tolerance and response to investigational product (not to exceed 4mg/day).
2: Placebo Comparator Drug: Placebo
Placebo

  Eligibility

Ages Eligible for Study:   6 Years to 12 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Healthy subjects with ADHD and oppositional symptoms
  • ADHD-RS>=24
  • CGI >=4
  • T-score of Opp subscale CPRS-R:L >=65
  • Normal ECG and BP
  • >= 55 lbs
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00367835

  Show 34 Study Locations
Sponsors and Collaborators
Shire Pharmaceutical Development
Investigators
Principal Investigator: Thomas Spencer, M.D. Massachusetts General Hospital
  More Information

Responsible Party: Shire ( Timothy Whitaker, M.D. )
Study ID Numbers: SPD503-307
Study First Received: August 22, 2006
Last Updated: March 19, 2008
ClinicalTrials.gov Identifier: NCT00367835  
Health Authority: United States: Food and Drug Administration

Study placed in the following topic categories:
Attention Deficit Disorder with Hyperactivity
Guanfacine
Mental Disorders
Mental Disorders Diagnosed in Childhood
Attention Deficit and Disruptive Behavior Disorders
Hyperkinesis

Additional relevant MeSH terms:
Neurotransmitter Agents
Adrenergic alpha-Agonists
Molecular Mechanisms of Pharmacological Action
Adrenergic Agents
Therapeutic Uses
Physiological Effects of Drugs
Cardiovascular Agents
Antihypertensive Agents
Adrenergic Agonists
Pharmacologic Actions

ClinicalTrials.gov processed this record on January 16, 2009