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Efficacy and Safety of Donepezil Hydrochloride in Preadolescent and Adolescent Children With Attention Impairment Following Cancer Treatment

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. Identifier: NCT00688376
Recruitment Status : Completed
First Posted : June 2, 2008
Last Update Posted : September 23, 2009
Eisai Limited
Information provided by:
Eisai Inc.

Brief Summary:
The purpose of this study is to evaluate the efficacy, safety and tolerability of donepezil in children with persistent attention impairment that is present at least 12 months after the completion of cancer treatment.

Condition or disease Intervention/treatment Phase
Attention Impairment Drug: Donepezil hydrochloride Drug: Placebo Phase 3

Detailed Description:
This is a double-blind, placebo-controlled, parallel group study in pediatric subjects who have persistent attention impairment following treatment for cancer. This trial has three phases: (1) pre-randomization to establish eligibility, (2) a 12-week, double-blind, placebo-controlled, parallel-group phase with dose escalation based on body weight, (3) a 12-week, blinded extension phase during which all subjects will receive active drug.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 300 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Randomized, Double-Blind, Placebo-Controlled Study of Efficacy and Safety of Donepezil Hydrochloride in Preadolescent and Adolescent Children With Attention Impairment Following Cancer Treatment
Study Start Date : August 2008
Actual Primary Completion Date : June 2009
Actual Study Completion Date : September 2009

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: 1 Drug: Donepezil hydrochloride

During the 12-week Double-Blind Phase, subjects will receive oral donepezil hydrochloride tablets starting at a dose of 3 mg once daily. Doses will be increased incrementally at successive 3-week intervals on the basis of weight and tolerability. The final daily dose will be 3, 5, or 10 mg depending on body weight.

During the Blinded Extension Phase, all subjects will receive active treatment (donepezil).

Other Name: Aricept

Placebo Comparator: 2 Drug: Placebo

During the 12-week Double-Blind Phase, subjects will receive matching placebo tablets (3, 5, of 10 mg) once daily.

During the 12-week Blinded Extension Phase, all subjects will receive active treatment (donepezil).

Primary Outcome Measures :
  1. Change in the TOVA-CPT (Test of Variables in Attention - Continuous Performance Test) reaction time variability measure (administered to subjects). [ Time Frame: Screening to week 12. ]

Secondary Outcome Measures :
  1. Paired Assoc. Learning Test, Woodcock Johnson Decision Speed Test, Woodcock Johnson Mathematics Fluency; Go/No-Go Task (for subjects); Conners' Parent Rating Scale-Revised (S); Behavioral Rating Inventory of Executive Functioning (parent/legal guardian). [ Time Frame: Screening to Week 12. ]

Information from the National Library of Medicine

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Ages Eligible for Study:   6 Years to 17 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
  1. The subject must have received at least one cycle of chemotherapy and/or cranial radiation, and must have completed this treatment at least one year before screening takes place for entry into this study.
  2. Subjects may be male or female; age range: 6 - 17.5 years; weight ≥ 20 kg. They must be physically healthy and able to move about, with or without aids, must be living in the community, and must have adequate motor skills as shown by tests that will be given at the time of screening. The subject's eyesight and hearing must be good enough to allow cooperation with tests and physical examinations. Additionally, they must be able to swallow tablets.
  3. There must be subjective complaints by subject and/or parent of difficulties in school or other daily activities, possibly related to impairments in attention. These difficulties must have emerged after treatment for cancer and must still be present 12 months after cessation of treatment. There must also be objective evidence for this impairment, as shown by a test that will be given to the subject at the time of screening.
  4. The IQ must be >70 according to tests that will be given at the time of screening.
  5. The first language in which the subject learned to read and write must be one that uses Roman lettering (a, b, c, etc.) and Arabic numerals (1, 2, 3, etc.).
  6. The subject must not have previously taken any drugs in the class known as cholinesterase inhibitors.
  7. A parent or legal guardian must be available who is willing and able to complete all of the outcome measures, to administer medications, and to accompany the subject to the required clinic visits.
  8. Subjects with diabetes or thyroid disease may still be eligible if certain medical requirements are satisfied.
  9. Female subjects who could become pregnant must undergo pregnancy testing and must agree to use contraception.

Exclusion Criteria:

Subjects who meet any of the following criteria will be excluded from the study:

  1. Inability to perform the required tests (for example, because of aphasia, motor deficits affecting the dominant hand, or mental retardation).
  2. Motor coordination not sufficient, according to tests to be conducted at the time of screening.
  3. Recurrence of cancer. If this happens, the subject will have to withdraw from the study.
  4. Mental retardation/developmental disability.
  5. Certain medications, such as methylphenidate, are not allowed during the study.
  6. Major depression.
  7. Problems with the digestive tract that could affect the subject's ability to absorb the study drug.
  8. Hypersensitivity to a chemical class known as piperidine derivatives.
  9. Certain other medical conditions as determined by clinical staff.
  10. Alcoholism, drug abuse, or organic brain disease other than that caused by the cancer or its treatment.
  11. Pregnancy, nursing, or unwillingness to undergo pregnancy testing if requested by clinical staff.
  12. Pregnancy, lactation or plans to become pregnant, or unwilling to take a screening Beta-human chorionic gonadotropin (ßhCG) test if a female >10 years of age.
  13. If sexually active, unwillingness to use birth control (males and females).
  14. Plans for certain types of elective surgery that would occur while the study is in progress.
  15. Plans for travel or other events that would interfere with the study schedule.
  16. Active treatment with another investigational drug within 3 months of the screening visit.

Information from the National Library of Medicine

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 identifier (NCT number): NCT00688376

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Sponsors and Collaborators
Eisai Inc.
Eisai Limited
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Study Director: Margaret Moline, Ph.D Eisai Inc.

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Responsible Party: Margaret Moline, PhD, Eisai Medical Research Inc. Identifier: NCT00688376     History of Changes
Obsolete Identifiers: NCT00687635
Other Study ID Numbers: E2020-G000-333
First Posted: June 2, 2008    Key Record Dates
Last Update Posted: September 23, 2009
Last Verified: September 2009
Keywords provided by Eisai Inc.:
Additional relevant MeSH terms:
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Cholinesterase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Cholinergic Agents
Neurotransmitter Agents
Physiological Effects of Drugs
Nootropic Agents