Evidence map›Paper›PMID 37351672›Full record

Observational studyActa neurochirurgica2023

Serum neurofilament light as a predictor of outcome in subarachnoid haemorrhage.

Conny Johansson, Helena Aineskog, Lars-Owe D Koskinen, Andreas Gunnarsson, Peter Lindvall

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Acta neurochirurgica, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.0field-weighted citation impact, top 23% 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

6 citing papers in PubMed, 5 citations in OpenAlex.

  1. Article
  2. Observational
  3. Article
  4. Article
  5. Early changes in inflammation-related proteins in the cerebrospinal fluid and plasma of patients with aneurysmal subarachnoid hemorrhage.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2025
    Article
  6. Review
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

5 authors at 1 institution in 1 country.

Conny JohanssonDepartment of Clinical Science, Neurosciences, Umeå University, SE-901 87, Umea, Sweden. conny.johansson@umu.se.ORCID http://orcid.org/0000-0001-8612-7173
Helena AineskogDepartment of Clinical Science, Neurosciences, Umeå University, SE-901 87, Umea, Sweden.ORCID http://orcid.org/0000-0003-3354-4146
Lars-Owe D KoskinenDepartment of Clinical Science, Neurosciences, Umeå University, SE-901 87, Umea, Sweden.ORCID http://orcid.org/0000-0003-3528-8502
Andreas GunnarssonUmanDiagnostics®, Umea, Sweden.
Peter LindvallDepartment of Clinical Science, Neurosciences, Umeå University, SE-901 87, Umea, Sweden.ORCID http://orcid.org/0000-0002-9552-2957
Umeå University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrognostication of clinical outcome in patients suffering from aneurysmal subarachnoid haemorrhage (SAH) is a challenge. There are no biochemical markers in routine use that can aid in prognostication. Neurofilament light (NFL) measured in cerebrospinal fluid (CSF) has been associated with clinical outcome in previous studies.

objectiveTo investigate if serum levels of NFL correlate with CSF levels and long-term clinical outcome in patients suffering from SAH.

methodsWe conducted an observational cohort study of 88 patients treated for SAH at Umeå University Hospital in 2014-2018. Serum and CSF samples were analysed using an enzyme-linked immunosorbent assay to quantify NFL levels. Outcome was assessed using Glasgow Outcome Scale Extended and dichotomised as favourable or unfavourable. Differences in NFL levels between outcome groups were analysed using repeated measurements ANOVA. Relationship between CSF and serum NFL levels was analysed using Pearson's correlation. A multivariate binary logistic regression model and a receiver operation characteristic curve were used to assess the predictive value of serum NFL.

resultsA significant correlation between serum and CSF-NFL levels could be seen (Pearson's correlation coefficient = 0.7, p < .0001). Mean level of serum NFL was higher in the unfavourable outcome group than the favourable outcome group (p < .0001), in all epochs of SAH, and correlated with initial disease severity on the World Federation of Neurosurgical Societies scale. Serum NFL in the late phase displayed the best predictive potential in a receiver operation characteristic curve analysis (AUC=0.845, p < .0001).

conclusionLevels of NFL in serum and CSF are correlated. Early serum NFL levels seem to reflect initial tissue damage and serum NFL levels in the late phase may reflect secondary events such as vasospasm or delayed cerebral ischemia. Serum NFL may be used as a prognostic marker of clinical outcome in SAH.

Indexed as

Brain IschemiaSubarachnoid HemorrhageBiomarkersCohort StudiesGlasgow Outcome ScaleHumansIntermediate FilamentsBiomarkersCerebral vasospasmGlasgow Outcome ScaleNeurofilament protein lSubarachnoid haemorrhage

Identifiers

PMID37351672
PMCPMC10542720
OpenAlexW4381714992

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.