Hazan, Jemma;
Alston, Duncan;
Fox, Nick C;
Howard, Robert;
(2022)
Practical application of Alzheimer's Disease Neuroimaging Initiative plasma P-tau181 reference data to support diagnosis of Alzheimer's disease.
International Journal of Geriatric Psychiatry
, 37
(2)
10.1002/gps.5670.
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Practical application of ADNI Plasma P-tau181 reference data to support diagnosis of Alzheimers disease- Final with figures.pdf - Other Download (198kB) | Preview |
Abstract
OBJECTIVES: To assess plasma phosphorylated tau181 (p-tau181) levels in Alzheimer's disease (AD), cognitively impaired non-AD participants (CI non-AD) and Control participants in the Alzheimer's Disease Neuroimaging Initiative (ADNI) dataset that could potentially act as reference data for clinic diagnoses of AD. METHODS: Data from 1558 participants (649 AD participants, 445 CI non-AD participants and 464 controls) were examined, comparing p-tau181 levels between Controls, AD and other dementias, stratified by age. RESULTS: There were significant differences in plasma p-tau181 values between Controls and those with AD at all ages up to 85 years. There were also significant differences between AD and CI non-AD participants up to the age of 85 years. CONCLUSIONS: Plasma P-tau181 may be a useful tool in the diagnosis of AD in those clinical settings where biomarkers have traditionally been less used. P-tau181 may be less useful as an aid to diagnosis in the very oldest-old. Further work is needed to establish the feasibility and utility of this biomarker within dementia diagnosis services not led by Neurologists, such as UK National Health Service Memory Services.
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