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@article{1823177,
author = {Gobom, J. and Parnetti, L. and RosaandNeto, P. and Vyhnalek, Martin and Gauthier, S. and Cataldi, S. and Lerch, O. and Laczo, J. and Cechova, Katerina and Clarin, M. and Benet, A. I. and Pascoal, T. A. and Rahmouni, N. and Vandijck, M. and Huyck, E. and Le Bastard, N. and Stevenson, J. and Chamoun, M. and Alcolea, D. and Lleo, A. and Andreasson, U. and Verbeek, M. M. and Bellomo, G. and Rinaldi, R. and Ashton, N. and Zetterberg, H. and Sheardová, Kateřina and Hort, Jakub and Blennow, K.},
article_location = {BERLIN},
article_number = {2},
doi = {http://dx.doi.org/10.1515/cclm-2021-0651},
keywords = {Alzheimer's disease; biomarkers; immunoassay; LUMIPULSE; validation},
language = {eng},
issn = {1434-6621},
journal = {Clinical Chemistry and Laboratory medicine},
title = {Validation of the LUMIPULSE automated immunoassay for the measurement of core AD biomarkers in cerebrospinal fluid},
url = {https://www.degruyter.com/document/doi/10.1515/cclm-2021-0651/html},
volume = {60},
year = {2022}
}
TY - JOUR
ID - 1823177
AU - Gobom, J. - Parnetti, L. - Rosa-Neto, P. - Vyhnalek, Martin - Gauthier, S. - Cataldi, S. - Lerch, O. - Laczo, J. - Cechova, Katerina - Clarin, M. - Benet, A. I. - Pascoal, T. A. - Rahmouni, N. - Vandijck, M. - Huyck, E. - Le Bastard, N. - Stevenson, J. - Chamoun, M. - Alcolea, D. - Lleo, A. - Andreasson, U. - Verbeek, M. M. - Bellomo, G. - Rinaldi, R. - Ashton, N. - Zetterberg, H. - Sheardová, Kateřina - Hort, Jakub - Blennow, K.
PY - 2022
TI - Validation of the LUMIPULSE automated immunoassay for the measurement of core AD biomarkers in cerebrospinal fluid
JF - Clinical Chemistry and Laboratory medicine
VL - 60
IS - 2
SP - 207-219
EP - 207-219
PB - WALTER DE GRUYTER & CO
SN - 14346621
KW - Alzheimer's disease
KW - biomarkers
KW - immunoassay
KW - LUMIPULSE
KW - validation
UR - https://www.degruyter.com/document/doi/10.1515/cclm-2021-0651/html
N2 - Objectives The core cerebrospinal fluid (CSF) biomarkers; total tau (tTau), phospho-tau (pTau), amyloid beta 1-42 (A beta 1-42), and the A beta 1-42/A beta 1-40 ratio have transformed Alzheimer's disease (AD) research and are today increasingly used in clinical routine laboratories as diagnostic tools. Fully automated immunoassay instruments with ready-to-use assay kits and calibrators has simplified their analysis and improved reproducibility of measurements. We evaluated the analytical performance of the fully automated immunoassay instrument LUMIPULSE G (Fujirebio) for measurement of the four core AD CSF biomarkers and determined cutpoints for AD diagnosis. Methods Comparison of the LUMIPULSE G assays was performed with the established INNOTEST ELISAs (Fujirebio) for hTau Ag, pTau 181, beta-amyloid 1-42, and with V-PLEX Plus A beta Peptide Panel 1 (6E10) (Meso Scale Discovery) for A beta 1-42/A beta 1-40, as well as with a LC-MS reference method for A beta 1-42. Intra- and inter-laboratory reproducibility was evaluated for all assays. Clinical cutpoints for A beta 1-42, tTau, and pTau was determined by analysis of three cohorts of clinically diagnosed patients, comprising 651 CSF samples. For the A beta 1-42/A beta 1-40 ratio, the cutpoint was determined by mixture model analysis of 2,782 CSF samples. Results The LUMIPULSE G assays showed strong correlation to all other immunoassays (r>0.93 for all assays). The repeatability (intra-laboratory) CVs ranged between 2.0 and 5.6%, with the highest variation observed for beta-amyloid 1-40. The reproducibility (inter-laboratory) CVs ranged between 2.1 and 6.5%, with the highest variation observed for beta-amyloid 1-42. The clinical cutpoints for AD were determined to be 409 ng/L for total tau, 50.2 ng/L for pTau 181, 526 ng/L for beta-amyloid 1-42, and 0.072 for the A beta 1-42/A beta 1-40 ratio. Conclusions Our results suggest that the LUMIPULSE G assays for the CSF AD biomarkers are fit for purpose in clinical laboratory practice. Further, they corroborate earlier presented reference limits for the biomarkers.
ER -
GOBOM, J., L. PARNETTI, P. ROSA-NETO, Martin VYHNALEK, S. GAUTHIER, S. CATALDI, O. LERCH, J. LACZO, Katerina CECHOVA, M. CLARIN, A. I. BENET, T. A. PASCOAL, N. RAHMOUNI, M. VANDIJCK, E. HUYCK, N. LE BASTARD, J. STEVENSON, M. CHAMOUN, D. ALCOLEA, A. LLEO, U. ANDREASSON, M. M. VERBEEK, G. BELLOMO, R. RINALDI, N. ASHTON, H. ZETTERBERG, Kateřina SHEARDOVÁ, Jakub HORT and K. BLENNOW. Validation of the LUMIPULSE automated immunoassay for the measurement of core AD biomarkers in cerebrospinal fluid. \textit{Clinical Chemistry and Laboratory medicine}. BERLIN: WALTER DE GRUYTER \&{}amp; CO, 2022, vol.~60, No~2, p.~207-219. ISSN~1434-6621. Available from: https://dx.doi.org/10.1515/cclm-2021-0651.
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