2020
DOI: 10.1017/cjn.2020.196
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Diagnostic Impact of Cerebrospinal Fluid Biomarkers in Atypical Dementias in Canada

Abstract: Background: In Canada, standard dementia workup consists of clinical, neurological, and cognitive evaluation, as well as structural brain imaging. For atypical dementia presentations, additional FDG-PET brain imaging is recommended. Cerebrospinal fluid (CSF) biomarkers have recently been proposed as the gold standard for in vivo detection of Alzheimer’s disease (AD) pathophysiology (NIA-AA research framework, 2018). As clinical implementation of CSF assessment is still limited in Canada, the present study… Show more

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“…The small number of patients who underwent LP may also have contributed to a spuriously high number of indeterminate CSF studies (30%), which represented all the indeterminate biomarker cases. However, this may also have been due to selection bias as described above, as the rate of indeterminate cases is similar to other studies performing Athena ADMark testing in patients with atypical dementia presentations (Oboudiyat et al, 2017; van den Brink et al, 2021). Future studies including Aβ 42 /Aβ 40 ratio may improve diagnostic accuracy of CSF biomarker studies, which would reduce the number of indeterminate cases and improve interpretability of results (Hansson et al, 2019).…”
Section: Discussionsupporting
confidence: 72%
“…The small number of patients who underwent LP may also have contributed to a spuriously high number of indeterminate CSF studies (30%), which represented all the indeterminate biomarker cases. However, this may also have been due to selection bias as described above, as the rate of indeterminate cases is similar to other studies performing Athena ADMark testing in patients with atypical dementia presentations (Oboudiyat et al, 2017; van den Brink et al, 2021). Future studies including Aβ 42 /Aβ 40 ratio may improve diagnostic accuracy of CSF biomarker studies, which would reduce the number of indeterminate cases and improve interpretability of results (Hansson et al, 2019).…”
Section: Discussionsupporting
confidence: 72%