Maintenance of Efficacy of Extended-Release Guanfacine HCl in Children and Adolescents With Attention-deficit/Hyperactivity Disorder (ADHD)
Public ClinicalTrials.gov record NCT01081145. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase 3, Double-blind, Placebo-controlled, Multicentre, Randomised Withdrawal, Long-term Maintenance of Efficacy and Safety Study of Extended-release Guanfacine Hydrochloride in Children and Adolescents Aged 6-17 With Attention Deficit/Hyperactivity Disorder
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The primary objective of this study is to evaluate the long-term maintenance of efficacy of Extended-Release Guanfacine HCl in children and adolescents (6-17 years) with attention-deficit/hyperactivity disorder (ADHD) who respond to an initial open-label, short term treatment with SPD503.
Study identification
- NCT ID
- NCT01081145
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 3
- Enrollment
- 528 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 6 Years to 17 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 11, 2010 (Actual)
- Primary completion
- Jun 3, 2013 (Actual)
- Completion
- Jun 3, 2013 (Actual)
- Last update posted
- Jun 14, 2021
2010 – 2013
United States locations
- U.S. sites
- 27
- U.S. states
- 19
- U.S. cities
- 27
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Harmonex Neuroscience Research | Dothan | Alabama | 36303 | — |
| Clinical Study Centers, LLC | Little Rock | Arkansas | 72205 | — |
| Psychiatric Centers at San Diego, Feighner Research | San Diego | California | 92108 | — |
| Encompass Clinical Research - North Coast | Spring Valley | California | 91978 | — |
| Elite Clinical Trials, Inc. | Wildomar | California | 92595 | — |
| Florida Clinical Research Center, LLC | Bradenton | Florida | 34208 | — |
| Sarkis Clinical Trials | Gainesville | Florida | 32607 | — |
| Amedica Research Institute, Inc. | Hialeah | Florida | 33013 | — |
| Clinical Neuroscience Solutions, Inc. | Jacksonville | Florida | 32216 | — |
| Florida Clinical Research Center, LLC | Maitland | Florida | 32751 | — |
| Clinical Neuroscience Solutions, Inc. | Orlando | Florida | 32806 | — |
| AMR-Baber Research Inc. | Naperville | Illinois | 60563 | — |
| Goldpoint Clinical Research, LLC | Indianapolis | Indiana | 46260 | — |
| Louisiana Research Associates, Inc. | New Orleans | Louisiana | 70114 | — |
| Delmarva Family Resources | Salisbury | Maryland | 21801 | — |
| University of Nebraska Medical Center | Omaha | Nebraska | 68198 | — |
| Center for Psychiatry and Behavioral Medicine, Inc. | Las Vegas | Nevada | 89128 | — |
| Mount Sinai School of Medicine | New York | New York | 10029 | — |
| Triangle Neuropsychiatry, PLLC | Durham | North Carolina | 27707 | — |
| Ohio State University, Nisonger Center | Columbus | Ohio | 43210 | — |
| IPS Research Company | Oklahoma City | Oklahoma | 73103 | — |
| Oregon Center for Clinical Investigations, Inc. (OCCI, Inc.) | Salem | Oregon | 97301 | — |
| CRI Worldwide, LLC | Philadelphia | Pennsylvania | 19139 | — |
| FutureSearch Clinical Trials | Austin | Texas | 78756 | — |
| ADHD Clinic of San Antonio | San Antonio | Texas | 78247 | — |
| Alliance Research Group, LLC | Richmond | Virginia | 23230 | — |
| Eastside Therapeutic Resource | Kirkland | Washington | 98033 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 54 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01081145, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jun 14, 2021 · Synced Oct 24, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT01081145 live on ClinicalTrials.gov.