DIagnostic Biomarkers and Symptoms in Patients With Alzheimer's Disease and Lewy bodY Dementia

NCT ID: NCT05768425

Last Updated: 2023-10-10

Study Results

Results pending

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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Recruitment Status

ACTIVE_NOT_RECRUITING

Total Enrollment

55 participants

Study Classification

OBSERVATIONAL

Study Start Date

2023-02-01

Study Completion Date

2032-12-31

Brief Summary

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This a study to improve diagnosis of dementia with Lewy bodies with RT-QuIC in different biospecimens.

Detailed Description

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Background. The number of persons living with dementia is increasing in Denmark and worldwide because the population is generally growing older. Dementia with Lewy bodies (DLB) is the second most prevalent etiology among the neurodegenerative diseases that give rise to dementia.

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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Dementia With Lewy Bodies Alzheimer Disease Mild Cognitive Impairment

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

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)

Intervention Type DIAGNOSTIC_TEST

RT-QuIC measures the ability of alpha-synuclein (aSyn) to misfold other aSyn proteins and is an amplification technique.

Cognitive test

Intervention Type DIAGNOSTIC_TEST

Minimal Mental State examination (MMSE), Montreal Cognitive Assessment (MoCA)

Motor examination

Intervention Type DIAGNOSTIC_TEST

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)

Intervention Type DIAGNOSTIC_TEST

RT-QuIC measures the ability of alpha-synuclein (aSyn) to misfold other aSyn proteins and is an amplification technique.

Cognitive test

Intervention Type DIAGNOSTIC_TEST

Minimal Mental State examination (MMSE), Montreal Cognitive Assessment (MoCA)

Motor examination

Intervention Type DIAGNOSTIC_TEST

Unified Parkinsons Rating Scale (UPDRS)

Healthy Controls (HC)

Young healthy controls under the age of 40.

Real-time quaking-induced conversion (RT-QuIC)

Intervention Type DIAGNOSTIC_TEST

RT-QuIC measures the ability of alpha-synuclein (aSyn) to misfold other aSyn proteins and is an amplification technique.

Cognitive test

Intervention Type DIAGNOSTIC_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.

Intervention Type DIAGNOSTIC_TEST

Cognitive test

Minimal Mental State examination (MMSE), Montreal Cognitive Assessment (MoCA)

Intervention Type DIAGNOSTIC_TEST

Motor examination

Unified Parkinsons Rating Scale (UPDRS)

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Age 18 - 40 years of age
* 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

* Signs of neurological/psychiatric conditions
* 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.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Danish Reference Center for Prion Diseases, Rigshospitalet

UNKNOWN

Sponsor Role collaborator

Department of Otorhinolaryngology, Head and Neck Surgery & Audiology, Rigshospitalet

UNKNOWN

Sponsor Role collaborator

Danish Dementia Research Centre

NETWORK

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

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

Site Status

Countries

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Denmark

Other Identifiers

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H-22046053

Identifier Type: -

Identifier Source: org_study_id

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