Evidence map›Paper›PMID 33766131›Full record

ArticleAlzheimer's research & therapy2021

Plasma neurofilament light and phosphorylated tau 181 as biomarkers of Alzheimer's disease pathology and clinical disease progression.

Christopher Clark, Piotr Lewczuk, Johannes Kornhuber, Jonas Richiardi, Bénédicte Maréchal, Thomas K Karikari, Kaj Blennow, Henrik Zetterberg, Julius Popp

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's research & therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 1 pooled it
10.7field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

56 citing papers in PubMed, 1 synthesis or guideline pooled it, 87 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Ultrasensitive Detection of Neurofilament Light in Plasma Using F(Ab')Small (Weinheim an der Bergstrasse, Germany) · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Relationship of Alzheimer's Disease and Related Dementias Plasma Biomarkers With Mobility in Cognitively Unimpaired Older Adults.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
    Article
  15. Alzheimer's disease plasma biomarkers in the Midwestern Amish.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  16. Article
  17. Article
  18. Observational
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 6 institutions in 5 countries.

Christopher ClarkInstitute for Regenerative Medicine, University of Zürich, Zürich, Switzerland. christopher.clark@irem.uzh.ch.ORCID 0000-0001-7210-7702
Piotr LewczukDepartment of Psychiatry and Psychotherapy, Universitätsklinikum Erlangen, and Friedrich - Alexander Universität Erlangen-Nürnberg, Erlangen, Germany.
Johannes KornhuberDepartment of Psychiatry and Psychotherapy, Universitätsklinikum Erlangen, and Friedrich - Alexander Universität Erlangen-Nürnberg, Erlangen, Germany.
Jonas RichiardiDepartment of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
Bénédicte MaréchalDepartment of Radiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
Thomas K KarikariDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.
Kaj BlennowDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.
Henrik ZetterbergDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.
Julius PoppOld age Psychiatry, Department of Psychiatry, University Hospital of Lausanne, Lausanne, Switzerland.
Sahlgrenska University Hospital · SEUniversity of Zurich · CHFriedrich-Alexander-Universität Erlangen-Nürnberg · DEMedical University of Białystok · PLSiemens Healthineers (Germany) · DEUniversity of Lausanne · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo assess the performance of plasma neurofilament light (NfL) and phosphorylated tau 181 (p-tau181) to inform about cerebral Alzheimer's disease (AD) pathology and predict clinical progression in a memory clinic setting.

methodsPlasma NfL and p-tau181, along with established cerebrospinal fluid (CSF) biomarkers of AD pathology, were measured in participants with normal cognition (CN) and memory clinic patients with cognitive impairment (mild cognitive impairment and dementia, CI). Clinical and neuropsychological assessments were performed at inclusion and follow-up visits at 18 and 36 months. Multivariate analysis assessed associations of plasma NfL and p-tau181 levels with AD, single CSF biomarkers, hippocampal volume, and clinical measures of disease progression.

resultsPlasma NfL levels were higher in CN participants with an AD CSF profile (defined by a CSF p-tau181/Aβ

conclusionPlasma NfL indicates neurodegeneration while plasma p-tau181 levels can serve as a biomarker of cerebral AD pathology and cognitive decline. Their predictive performance depends on the presence of cognitive impairment.

Indexed as

Alzheimer DiseaseCognitive DysfunctionAmyloid beta-PeptidesBiomarkersDisease ProgressionHumansIntermediate Filamentstau ProteinsAmyloid beta-PeptidesBiomarkerstau ProteinsAlzheimer’sBiomarkersNeurofilament lightPlasmap-tau181

Identifiers

PMID33766131
PMCPMC7995778
OpenAlexW3118616512

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.