DIagnostic Biomarkers and Symptoms in Patients With Alzheimer's Disease and Lewy bodY Dementia
NCT ID: NCT05768425
Last Updated: 2023-10-10
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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ACTIVE_NOT_RECRUITING
55 participants
OBSERVATIONAL
2023-02-01
2032-12-31
Brief Summary
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Detailed Description
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DLB is characterized by many prodromal symptoms years before dementia is evident. Currently, little is known about the course of symptoms in the prodromal phase, and furthermore, the diagnosis of DLB can be clinically challenging, especially in the early stages. A novel technique for the measurement of misfolded alpha-synuclein (aSyn) is Real-Time Quaking-Induced Conversion (RT-QuIC), which may be able to support the diagnostic process.
Objective: Determining which biospecimen alone or in conjunction with other biospecimens can most accurately discriminate patients with DLB from Alzheimer's disease (AD) assessed by RT-QuIC for aSyn.
Design: Cross-sectional case-control study of the diagnostic accuracy of pathological alpha-synuclein assessed by RT-QuIC in different biospecimens (CSF, skin, olfactory mucosa, saliva, feces, and urine) from patients with DLB versus AD.
Patients will also be scored with tests for cognitive function, dysautonomia, and movement disorders.
Conditions
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Study Design
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CASE_CONTROL
CROSS_SECTIONAL
Study Groups
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Dementia with Lewy Bodies (DLB)
Mild cognitive impairment (MCI) to moderate dementia with probable DLB No other severe neurological or psychiatric diseases. No alcohol or drug abuse.
Real-time quaking-induced conversion (RT-QuIC)
RT-QuIC measures the ability of alpha-synuclein (aSyn) to misfold other aSyn proteins and is an amplification technique.
Cognitive test
Minimal Mental State examination (MMSE), Montreal Cognitive Assessment (MoCA)
Motor examination
Unified Parkinsons Rating Scale (UPDRS)
Alzheimers disease (AD)
MCI to moderate dementia with probable AD. No other severe neurological or psychiatric diseases. No alcohol or drug abuse.
Real-time quaking-induced conversion (RT-QuIC)
RT-QuIC measures the ability of alpha-synuclein (aSyn) to misfold other aSyn proteins and is an amplification technique.
Cognitive test
Minimal Mental State examination (MMSE), Montreal Cognitive Assessment (MoCA)
Motor examination
Unified Parkinsons Rating Scale (UPDRS)
Healthy Controls (HC)
Young healthy controls under the age of 40.
Real-time quaking-induced conversion (RT-QuIC)
RT-QuIC measures the ability of alpha-synuclein (aSyn) to misfold other aSyn proteins and is an amplification technique.
Cognitive test
Minimal Mental State examination (MMSE), Montreal Cognitive Assessment (MoCA)
Interventions
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Real-time quaking-induced conversion (RT-QuIC)
RT-QuIC measures the ability of alpha-synuclein (aSyn) to misfold other aSyn proteins and is an amplification technique.
Cognitive test
Minimal Mental State examination (MMSE), Montreal Cognitive Assessment (MoCA)
Motor examination
Unified Parkinsons Rating Scale (UPDRS)
Eligibility Criteria
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Inclusion Criteria
* Able to cooperate as evaluated by the primary investigator (PI)
* Able to give informed consent
* Probable DLB (McKeith et al., 2017) or MCI-LB (McKeith et al., 2020)
* Age \> 50 years of age
* Able to give informed consent
* Able to cooperate as evaluated by the PI
* MCI, mild or moderate dementia, and MMSE \> 18
* Probable AD (McKhann et al., 2011) or MCI-AD (Albert et al., 2011)
* Age \> 50 years of age
* Able to give informed consent
* Able to cooperate as evaluated by the PI
* MCI, mild or moderate dementia, and MMSE \> 18
Exclusion Criteria
* Known genetic neurodegenerative disease in close family
* Patients not able to give informed consent.
* Current alcohol or drug abuse
* Terminal illness
* Diagnosed with major neurological/psychiatric conditions other than DLB.
* Patients not able to give consent.
* Current alcohol or drug abuse
* Terminal illness
* Diagnosed with major neurological/psychiatric conditions other than AD.
18 Years
ALL
Yes
Sponsors
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Danish Reference Center for Prion Diseases, Rigshospitalet
UNKNOWN
Department of Otorhinolaryngology, Head and Neck Surgery & Audiology, Rigshospitalet
UNKNOWN
Danish Dementia Research Centre
NETWORK
Responsible Party
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Principal Investigators
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Oskar McWilliam
Role: PRINCIPAL_INVESTIGATOR
Danish Dementia Research Centre, Rigshospitalet, Capital Region
Kristian S Frederiksen
Role: PRINCIPAL_INVESTIGATOR
Danish Dementia Research Centre, Rigshospitalet, Capital Region
Anja H Simmonsen
Role: PRINCIPAL_INVESTIGATOR
Danish Dementia Research Centre, Rigshospitalet, Capital Region
Steen G Hasselbalch
Role: PRINCIPAL_INVESTIGATOR
Danish Dementia Research Centre, Rigshospitalet, Capital Region
Gunhild Waldemar
Role: PRINCIPAL_INVESTIGATOR
Danish Dementia Research Centre, Rigshospitalet, Capital Region
Marie Brunn
Role: PRINCIPAL_INVESTIGATOR
Danish Dementia Research Centre, Rigshospitalet, Capital Region
Locations
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Danish Dementia Research Centre
Copenhagen, , Denmark
Countries
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Other Identifiers
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H-22046053
Identifier Type: -
Identifier Source: org_study_id
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