NCT02988908

Brief Summary

A comparison of memory training with and without donepezil.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
198

participants targeted

Target at P50-P75 for phase_4

Timeline
Completed

Started Apr 2000

Longer than P75 for phase_4

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 1, 2000

Completed
7.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2007

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2007

Completed
2.7 years until next milestone

First Submitted

Initial submission to the registry

May 11, 2010

Completed
6.6 years until next milestone

First Posted

Study publicly available on registry

December 9, 2016

Completed
Last Updated

February 10, 2017

Status Verified

December 1, 2016

Enrollment Period

7.4 years

First QC Date

May 11, 2010

Last Update Submit

February 9, 2017

Conditions

Outcome Measures

Primary Outcomes (2)

  • Change in recall of Word List over time

    Each participant was given a list of 16 words. Participants had 4 minutes to memorize the words in order. Short-term recall was tested after 5 minutes exposure to a distractor task and delayed recall was tested after 30 minutes. At recall participants were asked to recall as many words as they could remember in the order the words were presented.

    measured at baseline, Week 13 (before training), Week 14 (at end of training), and Week 52

  • Change in recall of Name-Face pairs over time

    Each participant was shown 12 name-face pairs for 1 minute. Recall was tested immediately after presentation of all 12 name-face pairs (faces were shown for 1 minute and participant was asked to supply the name).

    measured at baseline, Week 13 (before training), Week 14 (at end of training), and Week 52

Secondary Outcomes (4)

  • Change in Symbol Digit score over time

    measured at baseline, Week 13, and Week 52

  • Change in Digit Span score over time

    measured at baseline, Week 13, and Week 52

  • Change in Medical Outcomes Study Functioning and Well-being Profile over time

    measured at baseline, Week 13, and Week 52

  • Change in Everyday Problems Test score over time

    measured at baseline, Week 13 (before training), and Week 52

Study Arms (2)

Drug: Donepezil

EXPERIMENTAL

Participants received Donepezil as 5mg pills per day for 6 weeks, then 10 mg per day for the remainder of the 52-week trial. Participants also received 2 weeks of memory training at weeks 13-14

Drug: Donepezil

Placebo (Control)

PLACEBO COMPARATOR

Participants received placebo as 5mg pills per day for 6 weeks, then 10 mg per day for the remainder of the 52-week trial. Participants also received 2 weeks of memory training at weeks 13-14

Drug: Placebos

Interventions

Participants received donepezil as 5mg pills per day for 6 weeks, then 10 mg per day for the remainder of the 52-week trial. Participants also received 2 weeks of memory training at weeks 13-14

Also known as: Aricept
Drug: Donepezil

Participants received placebo as 5mg pills per day for 6 weeks, then 10 mg per day for the remainder of the 52-week trial. Participants also received 2 weeks of memory training at weeks 13-14

Also known as: Control
Placebo (Control)

Eligibility Criteria

Age55 Years - 90 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Study 1 only:
  • Global Clinical Dementia Rating (CDR) 0.0 or 0.5, at least 1 Box score = 0.5 and none \> 0.5;
  • Laboratory normal B12, RPR, and Thyroid Function Tests or without any clinically significant abnormalities that would be expected to interfere with the study, plus general clinical chemistry and complete blood count.
  • ECG without clinically significant abnormalities that would be expected to interfere with the study
  • Study 1 and Study 2:
  • Mini-Mental Exam score between 24 and 30 (inclusive);
  • General cognition and functional performance sufficiently preserved such that a diagnosis of Alzheimer's Disease cannot be made by the site physician at the time of the screening visit;
  • Permitted medications stable for at least 1 month prior to screening. In particular: a) Subjects may take stable doses of antidepressants lacking significant anticholinergic side effects (if they are not currently depressed and do not have a history of major depression within the past 2 years). b) Estrogen replacement therapy is permissible. c) Ginkgo biloba is permissible, but discouraged.
  • Hamilton Depression Score less than or equal to 12 on the 17-item scale.
  • Visual and auditory acuity adequate to allow neuropsychological testing.
  • General health good with no additional diseases expected to interfere with the study.
  • Women two years post-menopausal or surgically sterile.

You may not qualify if:

  • Any significant neurologic disease such as Possible and Probable AD, Parkinson's disease, multi-infarct dementia, Huntington's disease, normal pressure hydrocephalus, brain tumor, progressive supranuclear palsy, seizure disorder, subdural hematoma, multiple sclerosis, or history of significant head trauma followed by persistent neurologic defaults or known structural brain abnormalities.
  • Major depression or another major psychiatric disorder as described in DSM IV within the past 2 years. History of schizophrenia (DSM IV criteria). Psychotic features, agitation or behavioral problems within the last 3 months which could lead to difficulty complying with the protocol.
  • History of alcohol or substance abuse or dependence within the past 2 years (DSM IV criteria).
  • Any significant systemic illness or unstable medical condition which could lead to difficulty complying with the protocol including:
  • History of systemic cancer within the last 5 years (non-metastatic skin cancers are acceptable).
  • History of myocardial infarction within the past year or unstable or severe cardiovascular disease including angina or CHF with symptoms at rest.
  • Clinically significant obstructive pulmonary disease or asthma.
  • Clinically significant and unstable gastrointestinal disorder such as ulcer disease or a history of active or occult gastrointestinal bleeding within two years.
  • Insulin-requiring diabetes or uncontrolled diabetes mellitus.
  • Uncontrolled hypertension (systolic BP greater than 170 or diastolic greater than 100).
  • History of clinically significant liver disease, coagulopathy, or vitamin K deficiency within the past 2 years.
  • Use of centrally active beta-blockers, narcotics, methyldopa and clonidine within 4 weeks prior to screening. b) Use of anti-Parkinsonian medications (e.g. Sinemet, amantadine, bromocriptine, pergolide and selegiline) within 2 months prior to screening. c) Use of neuroleptics or narcotic analgesics within 4 weeks prior to screening. d) Use of long-acting benzodiazepines or barbiturates within 4 weeks prior to screening. e) Use of short-acting anxiolytics or sedative hypnotics more frequently than 2 times per week within 4 weeks prior to screening (note: sedative agents should not be used within 72 hours of screening). f) Initiation or change in dose of an antidepressant lacking significant cholinergic side effects within the 4 weeks prior to screening (use of stable doses of antidepressants for at least 4 weeks prior to screening is acceptable). g) Use of systemic corticosteroids within 3 months prior to screening. h) Medications with significant cholinergic or anticholinergic side effects (e.g. pyridostigmine, tricyclic antidepressants, meclizine, and oxybutynin) within 4 weeks prior to screening. i) Use of anti-convulsants (e.g. Phenytoin, Phenobarbital, Carbamazepine) within 2 months prior to screening. j) Use of warfarin (Coumadin) within 4 weeks prior to screening.
  • Any prior use of any FDA approved medications for the treatment of Alzheimer's Disease (e.g. tacrine, donepezil, or other newly approved medications).
  • Use of any investigational drugs within 30 days or 5 half-lives, whichever is longer, prior to screening.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

VA Palo Alto Health Care System

Palo Alto, California, 94304, United States

Location

MeSH Terms

Interventions

Donepezil

Intervention Hierarchy (Ancestors)

IndansIndenesPolycyclic Aromatic HydrocarbonsHydrocarbons, AromaticHydrocarbons, CyclicHydrocarbonsOrganic ChemicalsPiperidinesHeterocyclic Compounds, 1-RingHeterocyclic CompoundsPolycyclic Compounds

Study Officials

  • Jerome A Yesavage

    Stanford University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principle Investigator

Study Record Dates

First Submitted

May 11, 2010

First Posted

December 9, 2016

Study Start

April 1, 2000

Primary Completion

September 1, 2007

Study Completion

September 1, 2007

Last Updated

February 10, 2017

Record last verified: 2016-12

Data Sharing

IPD Sharing
Will not share

Locations