A Screening Protocol to Assess Adults and Adolescents With Down Syndrome for Eligibility For Upcoming Study of RG1662 (Study BP27832)
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This is a single visit study in which people with Down syndrome aged 12-30 will attend the clinical center to undergo assessments to evaluate their eligibility for potential enrollment in the future BP27832 Phase II clinical study which will evaluate the efficacy, safety and tolerability of RG1662. Study participants may withdraw from this study at any time and for any reason.
A Screening Protocol to Assess Adult and Adolescent Individuals With Down Syndrome for Eligibility to Participate in an Upcoming Study to Evaluate the Efficacy, Safety and Tolerability of RG1662 (Study BP27832)
Actual Study Start Date :
October 31, 2013
Actual Primary Completion Date :
January 31, 2015
Actual Study Completion Date :
January 31, 2015
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Layout table for eligibility information
Ages Eligible for Study:
12 Years to 30 Years (Child, Adult)
Sexes Eligible for Study:
Accepts Healthy Volunteers:
People with Down syndrome
Study participants will be assessed on the following criteria that they will be required to meet in order to participate in the future Phase II study BP27832:
Males and females 12-30 years of age (18-30 in the US)
Clinical diagnosis of Down syndrome (trisomy 21) documented by chromosomal analysis (karyotyping)
Body-mass Index (BMI) 18-42 and 15-32 kg/m2 inclusive for adults and adolescents respectively
Ability to complete the Clinical Evaluation of Language Fundamentals (CELF)-preschool 2 word classes task (i.e., ≥ 7 for the adults or ≥ 4 for the adolescents in the expressive raw score).
Study participant willing and assenting or consenting to participate
Parent or guardian willing to give written informed consent
Study participants must have a parent, or other reliable caregiver who will agree to accompany the study participant to clinic visits during the treatment study, BP27832
The parent or caregiver must be a constant and reliable informant with sufficient contact with the study participant to have detailed knowledge of the study participant's adaptive functioning in order to be able to complete assessments accurately
Study participants must be verbal and able to be understood most of the time and must not use other forms of communication, signs, symbol boards or devices as their primary form of communication
Study participants must have sufficient vision and hearing to participate in study evaluations
Study participants on anti-epileptic treatment must be on stable doses for 4 weeks prior to enrollment in the treatment protocol
In the future Phase II study, study participants must not meet any of the following criteria :
Study participants with severe lactose intolerance
Study participants with moderate or severe Obstructive Sleep Apnea (OSA) as defined by Apnea-Hypopnea Index (AHI) (>15 events per hour not well controlled by positive airway pressure therapy with stable settings) for 6 weeks prior to the screening visit
Study participants with history of malignancy if not considered likely to be cured
Personal history of infantile spasms, of epilepsy, of severe head trauma or Central Nervous System (CNS) infections (e.g. meningitis), with the exception of a single isolated febrile seizure
Study participants with history of epilepsy within the last 2 years.
Evidence of active, clinically significant, and unstable gastrointestinal, renal, hepatic, endocrine or cardiovascular system disease
Study participants with a current Diagnostic and Statistical Manual of Mental Disorders (DSM-5) diagnosis of any primary psychiatric diagnosis (including autism spectrum disorder). Diagnoses that are secondary, such as intellectual disability, attention deficit hyperactivity disorder, depression and conduct disorder are allowed as long as they are considered stable and to not interfere with conduct of a future treatment study
Study participants with a history of suicide attempt or deliberate self-harm due to suicidal ideation will not be included. Suicidal ideation (even in the absence of suicide attempt or deliberate self-harm) during the 6 months prior to screening
Concomitant use of excluded approved or unapproved medications
Personal or family history of congenital long QT syndrome
History of hepatitis C or known Human Immunodeficiency Virus (HIV) infection