A Study of RG1662 in Individuals With Down Syndrome
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT01436955 |
Recruitment Status :
Completed
First Posted : September 20, 2011
Last Update Posted : March 3, 2015
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Down Syndrome | Drug: Placebo Drug: RG1662 | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 35 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Double (Participant, Investigator) |
Primary Purpose: | Treatment |
Official Title: | A Multi-center, Randomized, Double-blind, Placebo-controlled, Multiple Dose Study to Investigate Safety and Tolerability of RG1662 in Individuals With Down Syndrome |
Study Start Date : | November 2011 |
Actual Primary Completion Date : | September 2013 |
Actual Study Completion Date : | September 2013 |

Arm | Intervention/treatment |
---|---|
Experimental: A |
Drug: RG1662
Cohorts receiving multiple oral doses |
Placebo Comparator: B |
Drug: Placebo
multiple oral doses |
- Safety: Incidence of adverse events [ Time Frame: 16 weeks ]
- Neurocognitive assessment: CANTAB (Computerized battery for assessing motor practice, reaction time and memory)/standard cognitive tests [ Time Frame: 5-6 weeks ]
- Pharmacokinetics: Serum concentration/area under the concentration-time curve (AUC) [ Time Frame: 5-6 weeks ]

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Ages Eligible for Study: | 18 Years to 30 Years (Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Adult individuals, 18 to 30 years of age, with diagnosis of Down Syndrome (confirmed by karyotype)
- Males and non-pregnant non-lactating females
- Parent or legal guardian/representative and caregiver willing to give written informed consent
- Subject willing and assenting or consenting to participate
Exclusion Criteria:
- Major depressive disorder not adequately controlled by a selective serotonin reuptake inhibitor or a serotonin norepinephrine reuptake inhibitor
- Subjects meeting clinical diagnostic criteria for autistic spectrum disorder, attention deficit or hyperactivity disorder unlikely to cooperate and take part successfully in the study assessments
- Subjects with other primary psychiatric diagnosis
- Subjects with evidence or meeting clinical diagnosis of dementia
- Subjects with personal history of cardiac abnormalities; patients that have previously undergone congenital heart surgery can be enrolled provided they have no residual complication requiring intervention (e.g. pace maker)
- Subjects with clinically significant obstructive pulmonary disease or asthma that is not adequately treated (oral steroids are not allowed)
- Subjects with thyroid dysfunction that is not adequately controlled and stabilized on treatment for at least 8 weeks
- Subjects with sustained elevated supine blood pressure (SBP/DBP) at rest exceeding 140/90 mmHg or notable resting tachycardia (mean HR > 60 bpm) or blood pressure below 90/40 mmHg
- Subjects who have taken any other investigational medications within 3 months
- Body mass index (BMI) > 40 kg/m2

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01436955
United States, Arizona | |
Phoenix, Arizona, United States, 85013 | |
United States, Arkansas | |
Little Rock, Arkansas, United States, 72204 | |
United States, California | |
La Jolla, California, United States, 92037 | |
United States, Colorado | |
Aurora, Colorado, United States, 80045 | |
United States, Georgia | |
Decatur, Georgia, United States, 30033 | |
United States, Illinois | |
Chicago, Illinois, United States, 60612 | |
United States, Maryland | |
Baltimore, Maryland, United States, 21287 | |
United States, North Carolina | |
Durham, North Carolina, United States, 27710 | |
United Kingdom | |
London, United Kingdom, NW10 7EW |
Study Director: | Clinical Trials | Hoffmann-La Roche |
Responsible Party: | Hoffmann-La Roche |
ClinicalTrials.gov Identifier: | NCT01436955 |
Other Study ID Numbers: |
BP25543 |
First Posted: | September 20, 2011 Key Record Dates |
Last Update Posted: | March 3, 2015 |
Last Verified: | March 2015 |
Down Syndrome Syndrome Disease Pathologic Processes Intellectual Disability Neurobehavioral Manifestations |
Neurologic Manifestations Nervous System Diseases Abnormalities, Multiple Congenital Abnormalities Chromosome Disorders Genetic Diseases, Inborn |