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CompletedNCT01754168Updated Mar 8, 2018

Amyloid Beta and Cognition in Parkinson Disease

An observational study in Parkinson Disease and Neurological Disorders, sponsored by University of Michigan. Completed at 1 site in United States. Open to participants aged 65 Years to 99 Years. Per ClinicalTrials.gov, last updated 2018-03-08.

Sponsored by University of Michigan · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
44
Ages
65 Years to 99 Years
Sex
All
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Study summary

The investigators propose to study persons with Parkinson Disease (PD) with detailed clinical, cognitive and imaging at the time of study entry and repeat these assessments 2 years later. The study looks at how changes in activity of the neurotransmitter acetylcholine relates to changes in cognitive function and to see if there is presence or build up of amyloid protein.

Read the detailed description

Participants with PD will be studied at initial visit assessing clinical, cognitive, and brain imaging. A one year and, if applicable, three year cognitive assessment will be done, and the entire/complete assessment (same as initial visit) will be repeated again at two years. There will be a maximum of three follow up visits. The imaging test battery will consist of amyloid and acetylcholine brain PET and MRI scans. The use of acetylcholine PET imaging will demonstrate how changes in activity of this neurotransmitter relate to changes in cognitive functions, such as memory and mental concentration. A key question will be whether persons with PD who not only are losing acetylcholine brain cells but also have the buildup of the Alzheimer amyloid protein have a more rapid progression with more severe cognitive decline and behavioral changes compared to persons who do not have the amyloid protein.

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Conditions studied

  • Parkinson Disease
  • Neurological Disorders

Keywords

  • Parkinson disease
  • Cognition
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In context

Parkinson Disease

4,487 studies on the registry are indexed under Parkinson Disease; 1,081 are open to participants now.

This study's enrollment of 44 is below the median of 96 across 1,056 observational studies indexed under Parkinson Disease.

Browse Parkinson Disease studies →

Lead sponsor

University of Michigan is the lead sponsor of 1,475 studies on the registry; 196 are open to participants now.

Of its 162 completed or terminated interventional studies of FDA-regulated products, 128 (79%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
65 Years to 99 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

UM and VA Movement Disorders Clinic

Primary Care Clinic

Community

Inclusion criteria

PD diagnosis according to the UK PD Society of Brain Bank research Center criteria PD subjects at risk for dementia Age 50 and above, male or female Absence of dementia confirmed by clinical and detailed neurological assessment -

Exclusion criteria

Exclusion Criteria:

Subjects with contra-indications to MR imaging Evidence of large vessel stroke or mass on on MRI Use of cholinergic or neuroleptic drugs at baseline Evidence of atypical parkinsonism on neurological exam Subjects limited by participation in research procedures involving ionizing radiation Pregnancy(test within 48 hours of each PET session) or breastfeeding

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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
44 participants (actual)
Patient registry
No
Biospecimen retention
Samples with dna
06

What researchers measure

Primary outcomes

  1. Cholinergic innervation

    FEOBV PET scan

    Time frame: Change from Baseline in cholinergic innervation at 2 years

  2. Cortical Amyloid Beta plaques

    PIB PET scan

    Time frame: Change from Baseline in beta-amyloid deposition at 2 years

  3. Cognitive function

    Detailed neuropsychological test battery

    Time frame: Change from Baseline in cognitive function at 2 years

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Study locations

1 site
  • University of Michigan Health System
    Ann Arbor, Michigan 48109, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 8, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01754168
Lead sponsor
University of Michigan
Responsible party
Nicolaas Bohnen, MD, PhD (Professor of Radiology and Neurology, University of Michigan) — Principal investigator
First posted
Dec 21, 2012
Start date
Feb 2013
Primary completion
Feb 2018
Completion
Feb 2018
Last update
Mar 8, 2018

Study contacts

Nicolaas Bohnen, M.D., Phd
principal investigator · University of Michigan
Roger Albin, M.D.
principal investigator · University of Michigan
Martijn Muller, PhD
principal investigator · University of Michigan

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2018. You cannot join it, but the record below documents what was studied.

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