A 10-Week, Double-Blind, Placebo-Controlled Study To Evaluate The Efficacy And Safety Of Donepezil Hydrochloride (Aricept) In The Treatment Of The Cognitive Dysfunction Exhibited By Children With Down Syndrome, Aged 6 To 10

Eisai Inc.2 sites in 1 country9 target enrollmentSeptember 2008

ConditionsDown Syndrome Cognitive Dysfunction

InterventionsAricept (Donepezil hydrochloride)Placebo

DrugsAricept (Donepezil hydrochloride)Placebo

Overview

Phase: Phase 3
Intervention: Aricept (Donepezil hydrochloride)
Conditions: Down Syndrome
Sponsor: Eisai Inc.
Enrollment: 9
Locations: 2
Primary Endpoint: Vineland-II Adaptive Behavior Scales (VABS-II) Parent/Caregiver Rating Form (PCRF) Sum of the 9 Sub-domain V-scores (3 Scores for Each of the Communication, Daily Living Skills, and Socialization Domains) Using Last Observation Carried Forward.
Status: Terminated
Last Updated: 6 years ago

Overview Investigators Eligibility Criteria Arms & Interventions Outcomes Sites Similar Trials

Overview

Brief Summary

The purpose of this study is to determine the efficacy and safety of donepezil hydrochloride (Aricept) in the treatment of cognitive dysfunction shown by children with Down syndrome, aged 6 to 10 years.

Detailed Description

This is a multinational study with sites in the US, India, Singapore, South Korea, Mexico and Chile. There will be 210 subjects (male or female) enrolled that are residing in community or facilities with a reliable caregiver that have been clinically diagnosed with Down syndrome. The assessments performed during this study will be used to evaluate skills. The study duration will be 10 weeks of double blind treatment with a total of 6 visits; 4 in office visit and 2 phone visits.

Registry

clinicaltrials.gov

Start Date

September 2008

End Date

December 2008

Last Updated

6 years ago

Study Type

Interventional

Study Design

Parallel

Sex

All

Investigators

Sponsor

Eisai Inc.

Responsible Party

Sponsor

Eligibility Criteria

Inclusion Criteria

•Age range: Subjects 6 to 10 years of age at the screening visit; weight \>= 15 kg.
•Sex distribution: both males and females.
•VABS-II/PCRF receptive sub-domain raw score of \>= 25 and expressive sub-domain raw score of \>=
•Clinical diagnosis of Down syndrome (DS) - subjects may have free trisomy 21, Robertsonian translocations, or mosaic DS
•Naive to approved or unapproved cholinesterase inhibitors (Aricept, Exelon, Cognex, Reminyl/Razadyne, metrifonate, physostigmine) is preferred. However, prior use of these medications is allowed, provided that the medication was discontinued at least 3 months prior to screening and that it was not discontinued for lack of tolerability or efficacy or for the sole purpose of enrolling the patient in the study. The exception to this prior use is that subjects who participated in the Phase II study E2020-A001-219 (A2501059) are not eligible.
•Subjects residing in the community or in facilities that have consistent and reliable caregivers who can provide efficacy information about the subjects.
•The subjects must be expected to complete all procedures scheduled during the Screening and Baseline visits including all efficacy and safety parameters. Subjects who are verbal and able to be understood most of the time are preferred, but those who use other forms of communication, signs, symbol boards or devices to supplement his/her communication ability may be enrolled provided they meet the VABS-II/PCRF receptive and expressive score criteria mentioned above.
•Subjects must have a parent, or other reliable caregiver who agrees to accompany the subject to all clinic visits, provide information about the subject as required by the protocol, and ensure compliance with the medication schedule.
•The parent or caregiver must be a constant and reliable informant with sufficient contact with the subject to have detailed knowledge of the subject's adaptive functioning in order to be able to complete the VABS-II/PCRF accurately. The same individual should complete the form at every visit if possible.
•Subjects should be in good general health with no medical conditions that are considered both clinically significant and unstable.

Exclusion Criteria

•Age range: Subjects \<6 or \>10 years at the screening visit.
•Subjects with active or clinically significant conditions that will, in the investigator's judgment, affect absorption, distribution or metabolism of the study medication (e.g., inflammatory bowel disease, gastric or duodenal ulcers or severe lactose intolerance); controlled celiac disease is allowed.
•Subjects with a known hypersensitivity to piperidine derivatives or cholinesterase inhibitors.
•Subjects currently receiving cholinesterase inhibitors or who have received them in the 3 months prior to screening or with prior use \>3 months prior to screening who stopped for lack of efficacy or tolerability or simply to enroll the subject in this study. Also excluded are subjects who participated in the Phase II study E2020-A001-219 (A2501059). In addition, subjects may not have taken any other investigational medications (including memantine) within 3 months prior to screening.
•Subjects without a reliable parent or caregiver (caregiver responsibilities are described in the Inclusion Criteria above), or with parents or caregivers who are unwilling or unable to complete any of the outcome measures and fulfill the requirements of this study.
•Subjects with clinically significant obstructive pulmonary disease or asthma, untreated or not controlled by treatment within 3 months prior to screening.
•Subjects with recent (\<= 1 year) or ongoing hematologic/oncologic disorders (mild anemia allowed).
•Evidence of active, clinically significant, and unstable gastrointestinal, renal, hepatic, endocrine or cardiovascular system disease.
•Subjects with a current Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) diagnosis of Major Depressive Disorder (MDD) or any current primary psychiatric diagnosis other than DS (as per DSM-IV). Diagnoses that are secondary, such as attention deficit hyperactivity disorder, are allowed.
•Any condition which would make the patient or the caregiver, in the opinion of the investigator, unsuitable for the study.

Arms & Interventions

Donepezil

Intervention: Aricept (Donepezil hydrochloride)

Placebo

Intervention: Placebo

Outcomes

Primary Outcomes

Vineland-II Adaptive Behavior Scales (VABS-II) Parent/Caregiver Rating Form (PCRF) Sum of the 9 Sub-domain V-scores (3 Scores for Each of the Communication, Daily Living Skills, and Socialization Domains) Using Last Observation Carried Forward.

Time Frame: Visit 0 (Screen), Visits 1 (Baseline), 2, and 3 (or Early Termination).

The primary objective of the study was evaluation of the efficacy and safety of donepezil hydrochloride in the treatment of the cognitive dysfunction exhibited by children with Down syndrome (DS), aged 6 to 10, as assessed by analysis of VABS-II/PCRF in the domains of communication, daily living skills, and socialization, and as assessed by standard safety measurements.

Secondary Outcomes

Mean Change From(Baseline) to Visit 3(Week 10 or Early Termination) in VABS-II/PCRF Sum of the 9 Sub-domain V-scores (3 Scores for Each of the Communication, Daily Living Skills, and Socialization Domains) Using Last Observation Carried Forward.(Visit 1 (Baseline) to Visit 3 (Week 10 or early termination).)