Journal
ALZHEIMER'S & DEMENTIA: DIAGNOSIS, ASSESSMENT & DISEASE MONITORING
Volume 14, Issue 1, Pages -Publisher
WILEY
DOI: 10.1002/dad2.12314
Keywords
Alzheimer's disease; cerebrospinal fluid biomarkers; diagnosis; mild cognitive impairment
Categories
Funding
- Roche Diagnostics International Ltd, Rotkreuz, Switzerland
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Biomarker testing using cerebrospinal fluid (CSF) is recommended for accurate diagnosis of Alzheimer's disease (AD) and can improve diagnostic accuracy, provide prognostic information, and guide personalized management. CSF ratios perform better than individual markers, and CSF biomarkers should be included in the diagnostic work-up of AD and mild cognitive impairment.
Biomarker testing is recommended for the accurate and timely diagnosis of Alzheimer's disease (AD). Using illustrative case narratives we consider how cerebrospinal fluid (CSF) biomarker tests may be used in different presentations of cognitive impairment to facilitate timely and differential diagnosis, improving diagnostic accuracy, providing prognostic information, and guiding personalized management in diverse scenarios. Evidence shows that (1) CSF ratios are superior to amyloid beta (A beta)1-42 alone; (2) concordance of CSF ratios to amyloid positron emission tomography (PET) is better than A beta 1-42 alone; and (3) phosphorylated tau (p-tau)/A beta 1-42 ratio is superior to p-tau alone. CSF biomarkers are recommended for the exclusion of AD as the underlying cause of cognitive impairment, diagnosis of AD at an early stage, differential diagnosis of AD in individuals presenting with other neuropsychiatric symptoms, accurate diagnosis of AD in an atypical presentation, and for clinical trial enrichment. Highlights Cerebrospinal fluid (CSF) Alzheimer's disease (AD) biomarker testing may be underused outside specialist centers.CSF biomarkers improve diagnostic accuracy, guiding personalized management of AD.CSF ratios (amyloid beta [A beta]1-42/A beta 1-40 and phosphorylated tau/A beta 1-42) perform better than single markers.CSF ratios produce fewer false-negative and false-positive results than individual markers.CSF biomarkers should be included in diagnostic work-up of AD and mild cognitive impairment due to AD.
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