Cited by 143Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsCerebrospinal fluid and hydrocephalus

Head‐to‐head comparison of clinical performance of CSF phospho‐tau T181 and T217 biomarkers for Alzheimer's disease diagnosis

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Karikari, Thomas K., Emeršič, Andreja, Vrillon, Agathe, Lantero‐Rodriguez, Juan, Ashton, Nicholas J., Kramberger, Milica Gregorič, Dumurgier, Julien, Hourregue, Claire +6 more·2021·Alzheimer's & Dementia

Abstract

Introduction: Phosphorylated tau (p‐tau) in cerebrospinal fluid (CSF) is an established Alzheimer's disease (AD) biomarker. Novel immunoassays targeting N‐terminal and mid‐region p‐tau181 and p‐tau217 fragments are available, but head‐to‐head comparison in clinical settings is lacking. Methods: N‐terminal‐directed p‐tau217 (N‐p‐tau217), N‐terminal‐directed p‐tau181 (N‐p‐tau181), and standard mid‐region p‐tau181 (Mid‐p‐tau181) biomarkers in CSF were evaluated in three cohorts (n = 503) to assess diagnostic performance, concordance, and associations with amyloid beta (Aβ). Results: CSF N‐p‐tau217 and N‐p‐tau181 had better concordance (88.2%) than either with Mid‐p‐tau181 (79.7%–82.7%). N‐p‐tau217 and N‐p‐tau181 were significantly increased in early mild cognitive impairment (MCI)‐AD (A+T–N–) without changes in Mid‐p‐tau181 until AD‐dementia. N‐p‐tau217 and N‐p‐tau181 identified Aβ pathophysiology (area under the curve [AUC] = 94.8%–97.1%) and distinguished MCI‐AD from non‐AD MCI (AUC = 82.6%–90.5%) signficantly better than Mid‐p‐tau181 (AUC = 91.2% and 70.6%, respectively). P‐tau biomarkers equally differentiated AD from non‐AD dementia (AUC = 99.1%–99.8%). Discussion: N‐p‐tau217 and N‐p‐tau181 could improve diagnostic accuracy in prodromal‐AD and clinical trial recruitment as both identify Aβ pathophysiology and differentiate early MCI‐AD better than Mid‐p‐tau181.

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  • CSF p-tau epitopes increase in the preclinical phase of the disease, prior to symptom onset and before substantial tau PET ligand retention.

    “Our data, like prior studies,18,28,31 shows an increase of CSF p-tau epitopes in the preclinical phase of the disease, prior to symptom onset and before substantial tau PET ligand retention.”

    From Cerebrospinal fluid p-tau231 as an early indicator of emerging pathology in Alzheimer's disease (2022) · cites this paper as [28]

    The Introduction reports that CSF p-tau217 begins to increase in preclinical familial Alzheimer’s disease, supporting an increase before symptoms. The Discussion also describes early increases in N-terminal p-tau biomarkers. Neither passage establishes that these increases precede substantial tau-PET ligand retention; the Introduction reports a correlation with tau-PET, not that timing. (LLM, conf=0.84)

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  • CSF p-tau217 might better discriminate AD from other neurodegenerative diseases than CSF p-tau181.

    “Recent reports have suggested that CSF p-tau217 might better discriminate AD from other neurodegenerative diseases24,27, 28, 29, 30 than CSF p-tau181.”

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  1. [33]McKeith IG, Boeve BF, Dickson DW, et al. Diagnosis and management of dementia with Lewy bodies. Neurology. 2017; 89: 88‐ 100. 28592453 PMC5496518

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Authors
Karikari, T. K., Emeršič, A., Vrillon, A., Lantero‐Rodriguez, J., Ashton, N. J., Kramberger, M. G., Dumurgier, J., Hourregue, C., Čučnik, S., Brinkmalm, G., Rot, U., Zetterberg, H., Paquet, C., & Blennow, K.
Affiliations
  • University of Gothenburg (SE)
  • Ljubljana University Medical Centre (SI)
  • Inserm (FR)
  • King's College London (GB)
  • University of Ljubljana (SI)
  • Université Paris Cité (FR)
  • Université de Paris, Cognitive Neurology Center, GHU Nord APHP Hospital Lariboisière Fernand Widal Paris France
  • Sahlgrenska University Hospital (SE)
Corresponding author
Karikari, Thomas K.
Venue
Alzheimer's & Dementia
Publisher
Wiley
Published
2020-11-30
Volume
17
Issue
5
Pages
755-767
ISSN
  • 1552-5260 (ISSN-L)
  • 1552-5279
OpenAlex
W3106880531
Cited by
143
References
55
Citations by year
2026: 15 · 2025: 17 · 2024: 30 · 2023: 18 · 2022: 42 · 2021: 20 · 2020: 1
FWCI
14.96
Type
journal article
Language
en
Update notices
erratum (2023-06-13)
Open access
Locations
  • Alzheimer s & Dementia (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • Alzheimer's Drug Discovery Foundation (2016862, FO2017-0243, 201809, 2017-00915, #ALFGBG-715986, 201809–2016862, JPND2019-466-236, 201809-2016615, #RDAPB‐201809‐2016615, AF-742881)
  • BrightFocus Foundation (AF-930627, A2020812F)
  • Gun och Bertil Stohnes Stiftelse
  • Demensförbundet
  • European Commission (201809-2016862, JPND2019‐466‐236)
  • Hjärnfonden (FO2017‑0243, FO2017, ALFGBG-715986, #FO2020-0240, JPND2019-466-236)
  • Vetenskapsrådet (2017-00915, (#ALFGBG-715986, -201809-2016615, 201809-2016862, 681712, 02532, 2018-, JPND2019-466-236, ALFGBG-720931, FO2017-0243, 2018-02532)
  • Alzheimerfonden (#AF-930627, -742881, AF-742881, -715986, -0243, FO2017-0243)
  • UK Dementia Research Institute (JPND2019-466–236, #2017-00915, ALFGBG-715986, RDAPB-201809-2016615, FO2017-0243, -0243, -201809-2016615, -715986)
  • H2020 European Research Council (681712)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Cerebrospinal fluid and hydrocephalus
Keywords
Alzheimer's disease, phosphorylated tau
MeSH terms
Aged, Alzheimer Disease, Female, France, Humans, Immunoassay, Male, Middle Aged, Phosphorylation, Sweden, Biomarkers, tau Proteins, Cognitive Dysfunction

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