OSCR

Tau368 improves p-tau diagnostic accuracy for FTLD-tau from FTLD-TDP.

Overview

Authors: Przemysław R Kac1,2, Katheryn A Q Cousins3, Alicja Szadziewska1, Leslie M Shaw4, Michael Turton5, Vivianna M Van Deerlin4,6, Peter Harrison5, Henrik Zetterberg1,2,7,8,9,10, David A Wolk3, Corey T McMillan3, Douglas Galasko11, Jörg Hanrieder1,8, Edward B Lee4,6, Hlin Kvartsberg1,7, David J Irwin3, Kaj Blennow1,12
  1. Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, 431 80 Mölndal, Sweden
  2. Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53726 USA
  3. Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104 USA
  4. Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104 USA
  5. Bioventix Plc, Farnham, GU9 7SX UK
  6. Department of Pathology and Laboratory Medicine, Center for Neurodegenerative Disease Research, Institute on Aging, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104 USA
  7. Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, 431 80 Mölndal, Sweden
  8. Department of Neurodegenerative Disease, Dementia Research Centre, Institute of Neurology, University College London, Queen Square, London, WC1E 6BT UK
  9. UK Dementia Research Institute, University College London, London, WC1E 6BT UK
  10. Centre for Brain Research, Indian Institute of Science, Bangalore, India
  11. Department of Neurosciences, University of California, San Diego, CA 92161 USA
  12. Eli Lilly and Company, Solna, Sweden
Journal: Acta neuropathologica, volume 151, issue 1, article 71
Dates: received 13 October 2025; accepted 10 June 2026; published online 24 June 2026; in print 2026
Type: Research article · Language: English
License: CC BY
Identifiers: DOI 10.1007/s00401-026-03042-1 · PMID 42340485 · PMCID PMC13294230 · OpenAlex W7165741235
Open access: hybrid, a free copy (OpenAlex)
Status: code on request
Categories: human (organism), Alzheimer's / dementia (population), Parkinson's (population), clinical / translational (subfield)
Methods: Statistics, Connectivity
Keywords: Frontotemporal lobar degeneration, Alzheimer’s disease, Tau368, p-Tau, Biomarkers, Cerebrospinal fluid
MeSH: Frontotemporal Dementia*, Frontotemporal Lobar Degeneration*, tau Proteins*, Aged, alpha-Synuclein, Alzheimer Disease, Biomarkers, Brain, Female, Humans, Male, Middle Aged, Phosphorylation, Tauopathies (* major topic)
Topic: Alzheimer's disease research and treatments (Physiology, Medicine), according to OpenAlex
Funding: Swedish State Support for Clinical Research (#ALFGBG-71320); UK Dementia Research Institute (UKDRI-1003); Alzheimer's Drug Discovery Foundation (#201809-2016862); European Research Council (101053962); Alzheimer's Association ((#ADSF-21-831376-C, #ADSF-21-831381-C, #ADSF-21-831377-C, and #ADSF-24-1284328-C); the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie (No 860197 (MIRIADE)); the European Partnership on Metrology, co-financed from the European Union's Horizon Europe Research and Innovation Programme and by the Participating States (NEuroBioStand, #22HLT07); Vetenskapsrådet (#2022-00732, #2023-00356, #2022-01018 and #2019-02397); Swedish state under the agreement between the Swedish government and the County Councils, the ALF-agreement (#ALFGBG-1006418); Swedish Alzheimer Foundation (#AF-994551); Hjärnfonden (#FO2022-0270, #FO2024-0048-TK-130 and FO2024-0048-HK-24); EU Joint Programme - Neurodegenerative Disease Research (JPND2021-00694); NIH HHS (P01-AG-066597, P30-AG-072979, P01-AG084497, R01-AG087258, R01AG090414, R01-NS109260)
Citations: not cited yet (Europe PMC); 123 references in the paper

Abstract

Across tauopathies—Alzheimer’s disease (AD), frontotemporal lobar degeneration due to tau (FTLD-tau)—we compared cerebrospinal fluid (CSF) biomarkers of phosphorylated-tau (p-tau) p-tau181, p-tau212, tau368, total tau (t-tau), and the tau368/t-tau ratio, and tested differentiation from non-tau (FTLD-TDP, neuronal α-synuclein disease (αSyn), and controls). In AD, CSF p-tau181 and p-tau212 were significantly higher than in all other groups, including FTLD-tau, while tau368/t-tau was significantly lower. With the aim to combine tau phosphorylation biomarkers (p-tau181 and p-tau212) with biomarkers for severity of tau pathology (tau368), we made ratios between these biomarkers and examined their diagnostic accuracy in FTLD after excluding high/intermediate AD neuropathologic change (ADNC). CSF p-tau181 and p-tau212, as well as p-tau181/tau368 and p-tau212/tau368, were higher in FTLD-tau compared with non-tau groups, and the diagnostic accuracy to discriminate FTLD-tau from FTLD-TDP improved. Levels of the ratios were increased in behavioral and primary progressive aphasia variants of tauopathies when compared to FTLD-TDP. Furthermore, the biomarkers showed significant correlation with both FTLD-tau and AD tau burden at autopsy across brain regions. These results suggest unique patterns of increased relative levels of p-tau epitopes in CSF among ADNC and FTLD-tau could improve the diagnosis of tauopathies and inform inclusion criteria in clinical trial design.

Supplementary Information: The online version contains supplementary material available at 10.1007/s00401-026-03042-1.

Reproduced under the paper's license (CC BY), from the paper cited above.

Code

The paper says that its authors' code is available on request: it was not published with the paper, so there is nothing to verify.

Code availability

The codes used for the data analyses in this study can be requested from the corresponding author.

Reproduced under the paper's license (CC BY), from the paper cited above.

Tracing map

A tracing map links a paper to the code its authors published: this paper has none (its code is available on request), so it has no map.

Data

No dataset and no data link were found in the paper.

Data availability

Blinded anonymized data are available on reasonable request from the corresponding author. The request will be reviewed by the investigators and respective institutions to verify if data transfer is in agreement with EU legislation on general data protection or is subject to any intellectual property or confidentiality obligations.

Reproduced under the paper's license (CC BY), from the paper cited above.

Versions

The history of this record: each version stored by the harvester or made by a correction of its authors or of the maintainers of its code, and what changed in its facts. The texts of the paper (its abstract, its availability statements) are not part of it; versions that changed only those are not listed.

Version 2, 28 September 2026

  • Publisher: n/a → Springer Science+Business Media

Version 1, 27 September 2026: the first record

Recorded: type, language, journal, volume, issue, pages, dates, 16 authors, 6 keywords, 14 MeSH terms, 13 funders, 123 references.

Cite

This paper

Kac, P. R., Cousins, K. A. Q., Szadziewska, A., Shaw, L. M., Turton, M., Van Deerlin, V. M., Harrison, P., Zetterberg, H., Wolk, D. A., McMillan, C. T., Galasko, D., Hanrieder, J., Lee, E. B., Kvartsberg, H., Irwin, D. J., & Blennow, K. (2026). Tau368 improves p-tau diagnostic accuracy for FTLD-tau from FTLD-TDP. Acta neuropathologica, 151(1), 71. https://doi.org/10.1007/s00401-026-03042-1

BibTeX

@article{kac2026tau368,
author = {Kac, Przemysław R and Cousins, Katheryn A Q and Szadziewska, Alicja and Shaw, Leslie M and Turton, Michael and Van Deerlin, Vivianna M and Harrison, Peter and Zetterberg, Henrik and Wolk, David A and McMillan, Corey T and Galasko, Douglas and Hanrieder, Jörg and Lee, Edward B and Kvartsberg, Hlin and Irwin, David J and Blennow, Kaj},
title = {{Tau368 improves p-tau diagnostic accuracy for FTLD-tau from FTLD-TDP}},
journal = {Acta neuropathologica},
year = {2026},
month = jun,
volume = {151},
number = {1},
pages = {71},
publisher = {Springer Science+Business Media},
issn = {0001-6322},
doi = {10.1007/s00401-026-03042-1},
url = {https://doi.org/10.1007/s00401-026-03042-1},
pmid = {42340485},
pmcid = {PMC13294230}
}

RIS

TY - JOUR
AU - Kac, Przemysław R
AU - Cousins, Katheryn A Q
AU - Szadziewska, Alicja
AU - Shaw, Leslie M
AU - Turton, Michael
AU - Van Deerlin, Vivianna M
AU - Harrison, Peter
AU - Zetterberg, Henrik
AU - Wolk, David A
AU - McMillan, Corey T
AU - Galasko, Douglas
AU - Hanrieder, Jörg
AU - Lee, Edward B
AU - Kvartsberg, Hlin
AU - Irwin, David J
AU - Blennow, Kaj
TI - Tau368 improves p-tau diagnostic accuracy for FTLD-tau from FTLD-TDP
T2 - Acta neuropathologica
J2 - Acta Neuropathol
PY - 2026
DA - 2026/06/24
VL - 151
IS - 1
SP - 71
SN - 0001-6322
PB - Springer Science+Business Media
DO - 10.1007/s00401-026-03042-1
UR - https://doi.org/10.1007/s00401-026-03042-1
LA - en
ER -

CSL-JSON

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