Recruiting

Observational Study

Sponsor:

McGill University

Code:

NCT03402919

Conditions

Dementia

Mild Cognitive Impairment (MCI)

Subjective Cognitive Impairment

Parkinson's Disease (PD)

Lewy Body Disease(LBD)

Eligibility Criteria

Sex: All

Age: 50 - 70+

Healthy Volunteers: Accepted

Study Details

Brief summary:

This is a longitudinal observational study recruiting individuals between the ages of 50 and 90 with different types of dementia as well as a comparison group without cognitive deficits. Participants are/will be recruited at sites across Canada and will undergo assessments, neuroimaging, and biological sample collection.

Conditions

Dementia

Mild Cognitive Impairment (MCI)

Subjective Cognitive Impairment

Parkinson's Disease (PD)

Lewy Body Disease(LBD)

Study ID

NCT03402919

Start date

Jun, 2016

Status verified date

Nov, 2025

Completion date

Dec, 2029

Anticipated

Primary completion date

Nov, 2023

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 50 - 70+

Healthy Volunteers: Accepted

Inclusion Criteria:

  • Has subjective or objective cognitive impairment
  • Written informed consent must be obtained and documented (from the patient or, where jurisdictions allow it, from a caregiver/family member)
  • Sufficient proficiency in English or French to undertake self report and neuropsychological testing
  • Geographic accessibility to the study site
  • Must have a study partner who can participate as required in the protocol (provide corroborative information)
  • Up to 12 years of education
  • Fits into one of the following groups: Cognitively Unimpaired, Subjective Cognitive Impairment, Mild Cognitive Impairment, Vascular Mild Cognitive Impairment, Parkinson's Disease, Parkinson's Disease with Mild Cognitive Impairment

Exclusion Criteria:

  • The presence of other significant known chronic brain disease such as: moderate to severe chronic static leukoencephalopathy (including previous traumatic injury), multiple sclerosis, a serious developmental handicap, malignant tumors, Parkinson's disease (other than for the Parkinson's cohort), and other rarer brain illnesses
  • Ongoing alcohol or drug abuse which in the opinion of the investigator may interfere with the subject's ability to comply with the study procedures
  • Symptomatic stroke within the previous year
  • Unable to undergo MRI scan due to medical contraindications or inability to tolerate the procedure

Study Design

Enrollment

1573 participants

Anticipated

Interventions and Outcome Measures

Arms

Normal healthy elderly

participants with no subjective or objective cognitive deficits or decline.

Subjective Cognitive Decline

Participants with a complaint of subjective cognitive impairment, but no objective evidence of such.

Mild Cognitive Impairment (MCI)

Participants with objective evidence of cognitive impairment, but it does not impact on daily function.

Vascular MCI

Participants meeting criteria of MCI who also show signs of cerebrovascular disease on imaging but have no history of stroke.

Alzheimer's Disease

Participants with dementia of the Alzheimer's type according to the National Institute of Aging-Alzheimer's Association criteria

Dementia of Mixed Etiology

Participants with dementia and evidence of more than one etiology.

Lewy Body/Parkinson's spectrum

Participants with Parkinson's disease who show mild or moderate cognitive impairment and/or dementia.

Frontotemporal dementia (FTD) spectrum

Participants with behavioral variant FTD, primary progressive aphasia, progressive supranuclear palsy, or corticobasal syndrome

Primary outcome measure

  • Montreal Cognitive Assessment (MoCA) score [ Time Frame: 8 years ]

Central Contacts and Locations

Locations

University of Calgary

Recruiting

Calgary, Alberta, Canada, T2N 1N4

Contacts

University of Alberta Hospital

Recruiting

Edmonton, Alberta, Canada, T6G 2B7

Contacts

Djavad Mowafaghian Centre for Brain Health

Recruiting

Vancouver, British Columbia, Canada, V6T 1Z3

Contacts

Veteran's Memorial Building

Recruiting

Halifax, Nova Scotia, Canada, B3E 2E1

Contacts

Hamilton General Hospital

Recruiting

Hamilton, Ontario, Canada, L8L 2X2

Contacts

St. Joseph's Health Care London

Recruiting

London, Ontario, Canada, N6A 4V2

Contacts

Gait and Brain Lab

Recruiting

London, Ontario, Canada, N6C 5J1

Contacts

Baycrest Clinical Unit

Recruiting

Toronto, Ontario, Canada, M6A 1W1

Contacts

Jewish General Hospital/McGill Memory Clinic

Recruiting

Montreal, Quebec, Canada, H3T 1E2

Contacts

Clinique de cognition Institut universitaire de gériatrie de Montréal

Recruiting

Montreal, Quebec, Canada, H3W 1W5

Contacts

Hôpital Enfant-Jésus

Recruiting

Québec, Quebec, Canada, G1J 1Z4

Contacts

More Information

Sponsor

McGill University

Last update posted

Jan 20, 2026

Last verified

Nov, 2025

Keywords

  • Observational
  • Dementia
  • Alzheimer's Disease
  • Parkinson's Disease
  • Biosample
  • Genetics
  • Neuropsychological
  • MRI
  • Microbiome
  • Plasma

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-11. This information was provided to ClinicalTrials.gov by McGill University on 2026-01-20.