Evidence map›Paper›PMID 33030817›Full record

ArticleAnnals of clinical and translational neurology2020

Ratio and index of Neurofilament light chain indicate its origin in Guillain-Barré Syndrome.

Peter Körtvelyessy, Jens Kuhle, Emrah Düzel, Stefan Vielhaber, Christian Schmidt, Annika Heinius, Frank Leypoldt, Burkhart Schraven, Dirk Reinhold, David Leppert and 1 more

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 8% 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

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

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  13. Clinical use and reporting of neurofilament quantification in neurological disorders: A global overview.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
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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

11 authors at 5 institutions in 2 countries.

Peter KörtvelyessyGerman Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany.ORCID 0000-0003-1262-6169
Jens KuhleDepartments of Medicine, Biomedicine, and Clinical Research, Neurologic Clinic and Policlinic, University Hospital Basel, University of Basel, Basel, Switzerland.ORCID 0000-0002-6963-8892
Emrah DüzelGerman Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany.
Stefan VielhaberDepartment of Neurology, University Hospital Magdeburg, Magdeburg, Germany.
Christian SchmidtInstitute for Pharmacology, University Hospital Magdeburg, Magdeburg, Germany.ORCID 0000-0002-8972-515X
Annika HeiniusDepartment of Neurology, Christian-Albrechts-University, University Hospital Schleswig-Holstein, Kiel, Germany.
Frank LeypoldtDepartment of Neurology, Christian-Albrechts-University, University Hospital Schleswig-Holstein, Kiel, Germany.
Burkhart SchravenInstitute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany.
Dirk ReinholdInstitute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany.
David LeppertDepartments of Medicine, Biomedicine, and Clinical Research, Neurologic Clinic and Policlinic, University Hospital Basel, University of Basel, Basel, Switzerland.
Alexander GoihlInstitute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany.
University Hospital Magdeburg · DEChristian-Albrechts-Universität zu Kiel · DEGerman Center for Neurodegenerative Diseases · DEUniversity of Basel · CHOtto-von-Guericke-Universität Magdeburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveNeurofilament light chain (NfL) has been established as a biomarker of axonal damage in many diseases of the central nervous system (CNS). Increased levels of serum NfL (sNfL) can derive as well from damage in the peripheral nervous system (PNS) as from CNS, but little is known about the quantities contributing to sNfL. Peripheral nerve damage may be reflected by an increase in sNfL levels, while the NfL CSF/serum ratio and NfL index decreases.

methodsWe collected serum and cerebrospinal fluid (CSF) from 21 Guillain-Barré Syndrome (GBS) patients and measured NfL in serum and CSF and compared them with 19 neurologically healthy controls.

resultsIn general, NfL in CSF and serum was significantly higher in GBS patients. Serum NfL was higher in GBS patients admitted to the intensive care unit (P = 0.02). Controls had a mean CSF/serum NfL ratio of 26.7 (ranging from 5.8 to 69.5) indicating a central origin of NfL. Three GBS patients had a similar range (23.9 to 42.7, mean 33.3) all of them with demyelinating pathology in the PNS. Eighteen GBS patients with axonal or mixed axonal-demyelinating pathology showed significantly lower CSF/serum ratios (0.02-12.2, mean 4.4), indicative of a peripheral origin of NfL. When applying the NfL index subdivisions remain the same.

interpretationThese results demonstrate that the PNS is a relevant contributor to sNfL levels and that the distribution can be identified by a lowered NfL CSF/serum ratio of NfL index. Furthermore, acute or subacute polyneuropathies are likely confounding factors in interpreting sNfL levels in CNS diseases.

Indexed as

AgedBiomarkersFemaleGuillain-Barre SyndromeHumansMaleMiddle AgedNeurofilament ProteinsRetrospective StudiesSeverity of Illness IndexBiomarkersneurofilament protein LNeurofilament Proteins

Identifiers

PMID33030817
PMCPMC7664266
OpenAlexW3091818617

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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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.