Alzheimer's DiseasePhase 1NCT00408525
Donepezil and Brain Activity Patterns in Those at Risk For Alzheimer's Disease
A Phase 1 study testing donepezil in people with Alzheimer's Disease, run by Vanderbilt University at 1 site in United States.
Trial summary
The purpose of the study is to examine patterns of brain activity in people who are at risk for memory problems (e.g., Alzheimer's disease or dementia)before and after the medication donepezil. Although genetic testing will be done, the results will not be shared with study participants. Read more about this study
- Who is it for?
- Ages 40 to 85 yearsHealthy volunteers can take part
- Conditions the study is for
- Alzheimer's Disease
- What is being tested?
- donepezil
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 41 participants
- Where
- 1 siteUnited States
- Study dates
- Dec 2006to 24 Aug 2012
- Phase
- Phase 1
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 40 to 85 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Subjects may report experiencing subjective memory dysfunction, however they must be found by clinical evaluation to have no memory dysfunction
- Neuropsychological test battery in the normal range
- Ages 40-85
Who cannot join
- Dementia (Mini-Mental State Exam less than 25/30)
- Left-handedness
- Current medication that could influence cognition
- Medical, psychiatric, and neurologic conditions, including cerebrovascular disease or uncontrolled hypertension
- Claustrophobia
- Surgical clips or implants
- Pacemakers or other implanted electronic devices
- History of sheet metal work
Trial locations and contacts
1 site in 1 country.
United States1 site
Vanderbilt University Medical Center
Nashville, Tennessee, 37212
About this study
Official title: Efficacy of Donepezil in Normalizing Brain Activation Patterns in People Genetically at Risk for Alzheimer's Disease
The purpose of the study is to examine patterns of brain activity in people who are at risk for memory problems (e.g., Alzheimer's disease or dementia)before and after the medication donepezil. Although genetic testing will be done, the results will not be shared with study participants.
Once the genetic testing is completed subjects may continue to the second phase of the study. During this time they will be asked to take the medication donepezil (which is approved by the FDA for the treatment of Alzheimer's disease).
Donepezil is not FDA approved for healthy volunteers and is therefore considered investigational in this study.
Read the detailed description
HYPOTHESIS
- Cognitively intact individuals with normal brain morphology at genetic risk for developing Alzheimer's' Disease (AD) show alterations in brain activation patterns during tasks that require memory compared to similar individuals with lower risk for developing AD.
- Donepezil, a cholinesterase inhibitor, can normalize such brain activation patterns in subjects at risk for AD.
SPECIFIC AIMS
- To replicate a recent study1, and compare brain activation in subjects genetically at risk for AD (carriers of the є4 allele of the apolipoprotein E gene (APOE)) with subjects at lower risk for AD (lacking the є4 allele) during tasks that require memory, via functional magnetic resonance imaging (fMRI).
- To determine if administration of a drug currently indicated in the treatment of AD, donepezil, can reverse fMRI brain activation patterns of at risk subjects to patterns similar to those of subjects at lower genetic risk for AD.
- Conditions
- Alzheimer's Disease
- Being tested
- donepezil
- Keywords
- memory loss, memory problems, alzheimer's, forgetfulness, forgetting
- Medical subject headings
- Alzheimer Disease, Memory Disorders
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
donepezilDrug
Also called Aricept
donepezil 5 mg tablets, total dose per day 10 mg for 6 week duration of study. Taken once per day.
| Study group | Role | What they receive |
|---|---|---|
| 1 | Experimental | Donepezil Receives: Drug: donepezil |
What is being measured
The primary outcome is the main question the study is designed to answer.
Changes in brain activation patterns as measured in an fMRI.
Measured: 8 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Dec 2006 (estimated)
- Study startDec 2006
- Primary completion24 Aug 2012
- Study completion24 Aug 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (9)Papers the sponsor has linked to this study.
- Other trials for Alzheimer's DiseaseStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Health services research
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 41 participants (actual)
Sponsor and investigators
- Lead sponsor
- Vanderbilt University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Harry E Gwirtsman, M.D., Principal investigator, Vanderbilt University Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00408525
- Sponsor's protocol ID
- 040686
- Status last verified
- Feb 2018
- First submitted
- 5 Dec 2006
- Last updated
- 5 Feb 2018
- Results posted
- No
- Data monitoring committee
- No
Publications
Bookheimer SY, Strojwas MH, Cohen MS, Saunders AM, Pericak-Vance MA, Mazziotta JC, Small GW. Patterns of brain activation in people at risk for Alzheimer's disease. N Engl J Med. 2000 Aug 17;343(7):450-6. doi: 10.1056/NEJM200008173430701.
PubMed 10944562Morris JC. Is Alzheimer's disease inevitable with age?: Lessons from clinicopathologic studies of healthy aging and very mild alzheimer's disease. J Clin Invest. 1999 Nov;104(9):1171-3. doi: 10.1172/JCI8560. No abstract available.
PubMed 10545515Small GW, Mazziotta JC, Collins MT, Baxter LR, Phelps ME, Mandelkern MA, Kaplan A, La Rue A, Adamson CF, Chang L, et al. Apolipoprotein E type 4 allele and cerebral glucose metabolism in relatives at risk for familial Alzheimer disease. JAMA. 1995 Mar 22-29;273(12):942-7.
PubMed 7884953Reiman EM, Caselli RJ, Yun LS, Chen K, Bandy D, Minoshima S, Thibodeau SN, Osborne D. Preclinical evidence of Alzheimer's disease in persons homozygous for the epsilon 4 allele for apolipoprotein E. N Engl J Med. 1996 Mar 21;334(12):752-8. doi: 10.1056/NEJM199603213341202.
PubMed 8592548Small GW, Ercoli LM, Silverman DH, Huang SC, Komo S, Bookheimer SY, Lavretsky H, Miller K, Siddarth P, Rasgon NL, Mazziotta JC, Saxena S, Wu HM, Mega MS, Cummings JL, Saunders AM, Pericak-Vance MA, Roses AD, Barrio JR, Phelps ME. Cerebral metabolic and cognitive decline in persons at genetic risk for Alzheimer's disease. Proc Natl Acad Sci U S A. 2000 May 23;97(11):6037-42. doi: 10.1073/pnas.090106797.
PubMed 10811879Burggren AC, Small GW, Sabb FW, Bookheimer SY. Specificity of brain activation patterns in people at genetic risk for Alzheimer disease. Am J Geriatr Psychiatry. 2002 Jan-Feb;10(1):44-51.
PubMed 11790634Smith CD, Andersen AH, Kryscio RJ, Schmitt FA, Kindy MS, Blonder LX, Avison MJ. Women at risk for AD show increased parietal activation during a fluency task. Neurology. 2002 Apr 23;58(8):1197-202. doi: 10.1212/wnl.58.8.1197.
PubMed 11971086Padovani A, Pastorino L, Borroni B, Colciaghi F, Rozzini L, Monastero R, Perez J, Pettenati C, Mussi M, Parrinello G, Cottini E, Lenzi GL, Trabucchi M, Cattabeni F, Di Luca M. Amyloid precursor protein in platelets: a peripheral marker for the diagnosis of sporadic AD. Neurology. 2001 Dec 26;57(12):2243-8. doi: 10.1212/wnl.57.12.2243.
PubMed 11756604Borroni B, Colciaghi F, Pastorino L, Pettenati C, Cottini E, Rozzini L, Monastero R, Lenzi GL, Cattabeni F, Di Luca M, Padovani A. Amyloid precursor protein in platelets of patients with Alzheimer disease: effect of acetylcholinesterase inhibitor treatment. Arch Neurol. 2001 Mar;58(3):442-6. doi: 10.1001/archneur.58.3.442.
PubMed 11255448
Study at a glance
From the registry record, last updated by the sponsor on 5 Feb 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Efficacy of Donepezil in Normalizing Brain Activation Patterns in People Genetically at Risk for Alzheimer's Disease
- ClinicalTrials.gov ID
- NCT00408525
- Acronym / sponsor ID
- 040686
- Conditions
- Alzheimer's Disease
- Keywords
- memory loss, memory problems, alzheimer's, forgetfulness, forgetting
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 41 participants (actual)
- Lead sponsor
- Vanderbilt UniversityUniversity, hospital or other
- Study start
- Dec 2006
- Primary completion
- 24 Aug 2012 (actual)
- Study completion
- 24 Aug 2012 (actual)
- First posted
- 7 Dec 2006 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of the study is to examine patterns of brain activity in people who are at risk for memory problems (e.g., Alzheimer's disease or dementia)before and after the medication donepezil. Although genetic testing will be done, the results will not be shared with study participants.
Once the genetic testing is completed subjects may continue to the second phase of the study. During this time they will be asked to take the medication donepezil (which is approved by the FDA for the treatment of Alzheimer's disease).
Donepezil is not FDA approved for healthy volunteers and is therefore considered investigational in this study.
Detailed description
HYPOTHESIS
- Cognitively intact individuals with normal brain morphology at genetic risk for developing Alzheimer's' Disease (AD) show alterations in brain activation patterns during tasks that require memory compared to similar individuals with lower risk for developing AD.
- Donepezil, a cholinesterase inhibitor, can normalize such brain activation patterns in subjects at risk for AD.
SPECIFIC AIMS
- To replicate a recent study1, and compare brain activation in subjects genetically at risk for AD (carriers of the є4 allele of the apolipoprotein E gene (APOE)) with subjects at lower risk for AD (lacking the є4 allele) during tasks that require memory, via functional magnetic resonance imaging (fMRI).
- To determine if administration of a drug currently indicated in the treatment of AD, donepezil, can reverse fMRI brain activation patterns of at risk subjects to patterns similar to those of subjects at lower genetic risk for AD.
Study design
- Primary purpose
- Health services research
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| 1 | Experimental | Drug: donepezilDonepezil |
Who may qualify
- Ages
- 40 to 85 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Subjects may report experiencing subjective memory dysfunction, however they must be found by clinical evaluation to have no memory dysfunction
- Neuropsychological test battery in the normal range
- Ages 40-85
Key exclusion criteria (8 listed)
- Dementia (Mini-Mental State Exam less than 25/30)
- Left-handedness
- Current medication that could influence cognition
- Medical, psychiatric, and neurologic conditions, including cerebrovascular disease or uncontrolled hypertension
- Claustrophobia
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| donepezilAlso: Ariceptdonepezil 5 mg tablets, total dose per day 10 mg for 6 week duration of study. Taken once per day. | Drug | 1 |
Primary outcome
Changes in brain activation patterns as measured in an fMRI.
Time frame: 8 weeks
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Feb 2018.
- Background: PubMed 10944562Bookheimer SY, Strojwas MH, Cohen MS, Saunders AM, Pericak-Vance MA, Mazziotta JC, Small GW. Patterns of brain activation in people at risk for Alzheimer's disease. N Engl J Med. 2000 Aug 17;343(7):450-6. doi: 10.1056/NEJM200008173430701.
- Background: PubMed 10545515Morris JC. Is Alzheimer's disease inevitable with age?: Lessons from clinicopathologic studies of healthy aging and very mild alzheimer's disease. J Clin Invest. 1999 Nov;104(9):1171-3. doi: 10.1172/JCI8560. No abstract available.
- Background: PubMed 7884953Small GW, Mazziotta JC, Collins MT, Baxter LR, Phelps ME, Mandelkern MA, Kaplan A, La Rue A, Adamson CF, Chang L, et al. Apolipoprotein E type 4 allele and cerebral glucose metabolism in relatives at risk for familial Alzheimer disease. JAMA. 1995 Mar 22-29;273(12):942-7.
- Background: PubMed 8592548Reiman EM, Caselli RJ, Yun LS, Chen K, Bandy D, Minoshima S, Thibodeau SN, Osborne D. Preclinical evidence of Alzheimer's disease in persons homozygous for the epsilon 4 allele for apolipoprotein E. N Engl J Med. 1996 Mar 21;334(12):752-8. doi: 10.1056/NEJM199603213341202.
- Background: PubMed 10811879Small GW, Ercoli LM, Silverman DH, Huang SC, Komo S, Bookheimer SY, Lavretsky H, Miller K, Siddarth P, Rasgon NL, Mazziotta JC, Saxena S, Wu HM, Mega MS, Cummings JL, Saunders AM, Pericak-Vance MA, Roses AD, Barrio JR, Phelps ME. Cerebral metabolic and cognitive decline in persons at genetic risk for Alzheimer's disease. Proc Natl Acad Sci U S A. 2000 May 23;97(11):6037-42. doi: 10.1073/pnas.090106797.
- Background: PubMed 11790634Burggren AC, Small GW, Sabb FW, Bookheimer SY. Specificity of brain activation patterns in people at genetic risk for Alzheimer disease. Am J Geriatr Psychiatry. 2002 Jan-Feb;10(1):44-51.
- Background: PubMed 11971086Smith CD, Andersen AH, Kryscio RJ, Schmitt FA, Kindy MS, Blonder LX, Avison MJ. Women at risk for AD show increased parietal activation during a fluency task. Neurology. 2002 Apr 23;58(8):1197-202. doi: 10.1212/wnl.58.8.1197.
- Background: PubMed 11756604Padovani A, Pastorino L, Borroni B, Colciaghi F, Rozzini L, Monastero R, Perez J, Pettenati C, Mussi M, Parrinello G, Cottini E, Lenzi GL, Trabucchi M, Cattabeni F, Di Luca M. Amyloid precursor protein in platelets: a peripheral marker for the diagnosis of sporadic AD. Neurology. 2001 Dec 26;57(12):2243-8. doi: 10.1212/wnl.57.12.2243.
- Background: PubMed 11255448Borroni B, Colciaghi F, Pastorino L, Pettenati C, Cottini E, Rozzini L, Monastero R, Lenzi GL, Cattabeni F, Di Luca M, Padovani A. Amyloid precursor protein in platelets of patients with Alzheimer disease: effect of acetylcholinesterase inhibitor treatment. Arch Neurol. 2001 Mar;58(3):442-6. doi: 10.1001/archneur.58.3.442.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Harry E Gwirtsman, M.D. principal investigator
Vanderbilt University Medical Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing donepezil in people with Alzheimer's Disease, run by Vanderbilt University at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 5 Feb 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Changes in brain activation patterns as measured in an fMRI. (time frame: 8 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00408525, which also lists 9 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Feb 2018.