Diagnostic Evaluation of Dementia with Lewy Bodies Using a Multimodal Approach

NCT ID: NCT06068361

Last Updated: 2025-03-27

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

RECRUITING

Total Enrollment

130 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-09-11

Study Completion Date

2027-09-30

Brief Summary

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Dementia with Lewy body disease (DLB) is the second leading cause of degenerative cognitive disorder after Alzheimer's disease (AD). Its variable clinical expression makes diagnosis difficult. To date, there is no validated DLB diagnostic biomarker, despite several biomarkers in development (EEG, MRI, biology).

Studies have shown that an improvement in diagnostic performance could be obtained by combining different modalities biomarkers using machine learning.

The aim of this research is to identify the best combination of multimodal biomarkers for the diagnosis of DLB (EEG, MRI, biology, cognitive scores), using a machine learning approach applied to a clinical cohort.

Detailed Description

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Study population: Observational prospective cohort study including over 24 months at the GHU AP-HP. Nord Lariboisière, Cognitive Neurology Center : 50 probable DLB patients, 50 AD patients, and 30 control subjects with subjective cognitive impairment but without any element in favor of neurodegenerative disorders. Total clinical dataset n= 130.

Act :

* 32-electrode EEG (resting state, passive auditory and active visual task).
* 4 dry electrode EEG cap simultaneously with the 32-electrode EEG

Expected results: Improved DLB diagnosis performance using a combination of multimodal biomarkers (EEG, cognitive scores, plasma, brain MRI).

Conditions

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Lewy Bodies Disease Alzheimer Disease Cognitive Impairment

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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DLB patients

Dementia with Lewy bodies according to the revised criteria of Mc Keith 2017

EEG

Intervention Type DIAGNOSTIC_TEST

32-electrode EEG (resting state, passive auditory and active visual task) + simultaneous recording with a 4 dry electrode EEG cap

AD patients

Alzheimer's disease according to McKhann et al., 2011 criteria including CSF biomarkers (an abnormal level of beta-amyloid 1-42 protein \[Ab42\] or a pathological Ab42/Ab40 ratio and an abnormal level of phosphorylated tau \[p-tau\])

EEG

Intervention Type DIAGNOSTIC_TEST

32-electrode EEG (resting state, passive auditory and active visual task) + simultaneous recording with a 4 dry electrode EEG cap

Control

Subjective cognitive complaint, with a normal brain MRI and neurological examination, without any elements in favor of a neurodegenerative disease

EEG

Intervention Type DIAGNOSTIC_TEST

32-electrode EEG (resting state, passive auditory and active visual task) + simultaneous recording with a 4 dry electrode EEG cap

Interventions

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EEG

32-electrode EEG (resting state, passive auditory and active visual task) + simultaneous recording with a 4 dry electrode EEG cap

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Neuropsychological assessment possible (good level in French language, absence of visual/auditory deficit limiting the cognitive assessment)
* Dementia with Lewy bodies according to the revised criteria of Mc Keith 2017 or probable AD defined according to McKhann 2011 criteria including CSF biomarkers (an abnormal level of beta-amyloid 1-42 protein \[Ab42\] or a pathological Ab42/Ab40 ratio and an abnormal level of phosphorylated tau \[p-tau\])


* Neuropsychological assessment possible (good level in French language, absence of visual/auditory deficit limiting the cognitive assessment)
* MMSE (Mini-mental State Examination) greater than or equal to 28, normal MemScreen test results, normal brain MRI and normal neurological examination

Exclusion Criteria

* Contraindication to MRI
* Other neurological or psychiatric or toxic/iatrogenic disorders that may account for the cognitive impairment or for EEG abnormalities
* Any unstable medical pathology and/or that may account for the cognitive impairment
Minimum Eligible Age

55 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Association des Aidants et Malades à Corps de Lewy (A2MCL)

UNKNOWN

Sponsor Role collaborator

Assistance Publique - Hôpitaux de Paris

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Centre de neurologie Cognitive

Paris, France, France

Site Status RECRUITING

Countries

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France

Central Contacts

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Claire PAQUET, MDPhD

Role: CONTACT

0140054313 ext. 33

Facility Contacts

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Claire PAQUET, MDPhD

Role: primary

0140054313 ext. 33

Other Identifiers

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2023-A00961-44

Identifier Type: OTHER

Identifier Source: secondary_id

APHP231168

Identifier Type: -

Identifier Source: org_study_id

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