CSF biomarkers for the differential diagnosis of Alzheimer's disease: A large‐scale international multicenter study
- 23 March 2015
- journal article
- research article
- Published by Wiley in Alzheimer's & Dementia
- Vol. 11 (11), 1306-1315
- https://doi.org/10.1016/j.jalz.2014.12.006
Abstract
The aim of this study was to test the diagnostic value of cerebrospinal fluid (CSF) beta-amyloid (Aβ1–42), phosphorylated tau, and total tau (tau) to discriminate Alzheimer's disease (AD) dementia from other forms of dementia. A total of 675 CSF samples collected at eight memory clinics were obtained from healthy controls, AD dementia, subjective memory impairment, mild cognitive impairment, vascular dementia, Lewy body dementia (LBD), fronto-temporal dementia (FTD), depression, or other neurological diseases. CSF Aβ1–42 showed the best diagnostic accuracy among the CSF biomarkers. At a sensitivity of 85%, the specificity to differentiate AD dementia against other diagnoses ranged from 42% (for LBD, 95% confidence interval or CI = 32–62) to 77% (for FTD, 95% CI = 62–90). CSF Aβ1–42 discriminates AD dementia from FTD, but shows significant overlap with other non-AD forms of dementia, possibly reflecting the underlying mixed pathologies.Keywords
Funding Information
- Itä-Suomen Yliopisto (5772708)
- European Commission (288557, 2011‐2014, 316639, 2012‐2016)
- Robert Bosch Stiftung (2008‐2011)
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