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Cerebrospinal Fluid Biomarkers for the Diagnosis of Alzheimer Disease in South Korea
- Cerebrospinal Fluid Biomarkers for the Diagnosis of Alzheimer Disease in South Korea
- Park, Sun Ah; Chae, Won Seok; Kim, Hyeong Jun; Shin, Ho Sik; Kim, Saeromi; Im, Ji Young; Ahn, Sang Il; Min, Kyoung Dae; Yim, Soo Jae; Ye, Byoung Seok; Seo, Sang Won; Jeong, Jee Hyang; Park, Kyung Won; Choi, Seong Hye; Na, Duk L.
- Ewha Authors
- SCOPUS Author ID
- Issue Date
- Journal Title
- ALZHEIMER DISEASE & ASSOCIATED DISORDERS
- vol. 31, no. 1, pp. 13 - 18
- Alzheimer disease; biomarker; cerebrospinal fluid; diagnosis
- LIPPINCOTT WILLIAMS & WILKINS
- SCI; SCIE; SCOPUS
- Laboratory-specific reference values for cerebrospinal fluid (CSF) Alzheimer disease (AD) biomarkers are necessary. Our objective was to apply well-known CSF biomarkers and redetermine their diagnostic cutoff values for AD in South Korea. CSF samples from matched control subjects (n=71), patients with AD dementia (ADD, n=76), and other neurological disorders with cognitive decline (OND, n=47) were obtained from 6 Korean dementia clinics according to a standardized protocol. CSF biomarker concentrations were measured using enzyme-linked immunosorbent assay. CSF biomarkers differed significantly between the ADD and control groups (P<0.001 for all), and between the ADD and OND groups (P<0.001 for all). The areas under the curve in differentiation of ADD from control subjects were 0.97 for A42, 0.93 for total tau (tTau), 0.86 for pTau, and 0.99 for both tTau/A42 and pTau/A42 ratios. Our revised cutoff value for A42 was higher than our previous one, whereas the values for the Tau proteins were similar. The tTau/A42 ratio had the highest accuracy, 97%. Our findings highlight the usefulness of CSF AD biomarkers in South Korea, and the necessity of continually testing the reliability of cutoff values.
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