- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03698760
Computerized Olfactory Test - Alzheimer Disease Mild Stage
Calibration and Validation of a Computerized Olfactory Test in Subjects With Alzheimer's Disease in a Mild Stage
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
For twenty years research has shown a strong link between olfactory disorders and Alzheimer's disease. The focus is on the very early alteration of the olfaction which acts as a harbinger of the disease since it is detectable in its asymptomatic phase. In addition, olfactory involvement is a precursor to the transformation of mild cognitive impairment into MA. Indeed the anatomical structures the first lesions are located in the transentorhinal region of the temporal lobe and entorhinal phase, before progressing towards the limbic system, which will mark the clinical appearance of the first signs of AD.
In literature, it has been shown that there was no olfactory test that is recognized as a gold standard in the scientific community due to a lack of homogeneity of the tools used, their availability and their validity depending on the culture. Moreover, of all the tests currently available, none are specific to neurodegenerative diseases.
Very recent studies show that there is also a strong preference for imaging tools or biomarkers in the detection of AD, but it appears that the olfactory disorders are well before these markers. It has been shown that an identification test is comparable in predictive accuracy to neuroimaging and cerebrospinal fluid sampling.
This study will therefore focus on the calibration and validation of a computerized olfactory test for the diagnosis of Alzheimer's disease and based the recommendations of professionals so as to promote the effective use of this test in clinical practice.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Quebec
-
Montréal, Quebec, Canada, H3T 1E2
- Jewish General Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Being 60 years old and over
- The participants enrolled in the control group must have a score of the Mini-Mental State Exam test greater than or equal to 28.
- The participants enrolled in the intervention group must have a diagnosis of Alzheimer's disease, and the score of the Mini-Mental State Exam test should be between 20 and 27
Exclusion Criteria:
- Presenting an unstable, acute or current psychiatric or physical condition that is severe enough to prevent the participant from participating in the study, as determined by the investigator.
- Having an uncorrected major visual or hearing impairment or anosmia (total olfaction loss).
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Mild stage Alzheimer group
Participants with mild stage Alzheimer's disease
|
Olfactory test: All fragrances tested are kept in an airtight case protected from cold and heat. The test is done on a tablet and the data will be automatically saved. The first screen is about the administrative data, sex and age of the subject. Olfactory test: six odors among the fourteen are proposed in a randomized way. |
Experimental: Control Group
Participants without cognitive disorders
|
Olfactory test: All fragrances tested are kept in an airtight case protected from cold and heat. The test is done on a tablet and the data will be automatically saved. The first screen is about the administrative data, sex and age of the subject. Olfactory test: six odors among the fourteen are proposed in a randomized way. |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Objective test of evaluation of the olfactory sensitivity
Time Frame: 15 minutes
|
olfactory test (only one evaluation): random fragrances, recognition (Yes or No)
|
15 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Health condition assessed by self-administered questionnaire (SAQ)
Time Frame: 10 minutes
|
self-administered questionnaire (SAQ), score between 0 and 18, a higher score means a higher frailty
|
10 minutes
|
Objective test of evaluation of the olfactory thresholds
Time Frame: 15 minutes
|
olfactory test, 6 random fragrances among 14, recognition Yes or No and at what concentration
|
15 minutes
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2019-1509
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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