Evidence map›Paper›PMID 33846219›Full record

ArticleNeurology(R) neuroimmunology & neuroinflammation2021

Investigating the Presence of Interattack Astrocyte Damage in Neuromyelitis Optica Spectrum Disorder: Longitudinal Analysis of Serum Glial Fibrillary Acidic Protein.

Jae-Won Hyun, Yeseul Kim, So Yeon Kim, Min Young Lee, Su-Hyun Kim, Ho Jin Kim

Open access · goldAbstract read
In one paragraph

Article in Neurology(R) neuroimmunology & neuroinflammation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

17 citing papers in PubMed, 29 citations in OpenAlex.

  1. Trial
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  4. Neuroglial markers of damage in autoimmune neurology.Therapeutic advances in neurological disorders · 2026
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  6. Role of soluble biomarkers in treating multiple sclerosis and neuroinflammatory conditions.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Jae-Won HyunFrom the Department of Neurology (J.-W.H., S.-H.K., H.J.K.), Division of Clinical Research; and Research Institute and Hospital of National Cancer Center (Y.K., S.Y.K., M.Y.L., H.J.K.), Goyang, Korea.
Yeseul KimFrom the Department of Neurology (J.-W.H., S.-H.K., H.J.K.), Division of Clinical Research; and Research Institute and Hospital of National Cancer Center (Y.K., S.Y.K., M.Y.L., H.J.K.), Goyang, Korea. hojinkim@ncc.re.kr.
So Yeon KimFrom the Department of Neurology (J.-W.H., S.-H.K., H.J.K.), Division of Clinical Research; and Research Institute and Hospital of National Cancer Center (Y.K., S.Y.K., M.Y.L., H.J.K.), Goyang, Korea.
Min Young LeeFrom the Department of Neurology (J.-W.H., S.-H.K., H.J.K.), Division of Clinical Research; and Research Institute and Hospital of National Cancer Center (Y.K., S.Y.K., M.Y.L., H.J.K.), Goyang, Korea.ORCID 0000-0002-5992-6276
Su-Hyun KimFrom the Department of Neurology (J.-W.H., S.-H.K., H.J.K.), Division of Clinical Research; and Research Institute and Hospital of National Cancer Center (Y.K., S.Y.K., M.Y.L., H.J.K.), Goyang, Korea. hojinkim@ncc.re.kr.
Ho Jin KimFrom the Department of Neurology (J.-W.H., S.-H.K., H.J.K.), Division of Clinical Research; and Research Institute and Hospital of National Cancer Center (Y.K., S.Y.K., M.Y.L., H.J.K.), Goyang, Korea. hojinkim@ncc.re.kr.
National Cancer Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesInformation on subclinical astrocyte damage can provide further insight into neuromyelitis optica spectrum disorder (NMOSD) pathophysiology and disease-monitoring strategies. To investigate whether astrocyte and neuroaxonal damage occurs during interattack periods in individuals with NMOSD through longitudinal measurement of serum glial fibrillary acidic protein (sGFAP) and neurofilament light chain (sNfL) at multiple time points.

methodssGFAP and sNfL levels were measured in 187 serum samples from 20 participants with NMOSD treated with rituximab (median follow-up: 24 months) and 19 age-/sex-matched healthy controls using a highly sensitive single-molecule array assay. From the NMOSD cohort of National Cancer Center, Korea, 14 clinically stable participants were randomly selected for focused investigation of interattack periods, and 6 participants with clinical attacks despite treatment were enrolled for attack-related measurements.

resultsSignificant elevations of sGFAP levels were observed in all clinical attacks, and 95% (19/20) of patients showed reduction of sGFAP levels below the cutoff value (3 SDs above mean levels in age-/sex-matched healthy controls) within 3 months of their clinical attacks. The sGFAP levels were consistently low during interattack periods in 90% (17/19) of patients whose sGFAP levels returned to below the cutoff value. Changes in sNfL levels were similar to but slower than those in sGFAP levels.

conclusionsSubclinical astrocyte damage represented by increasing sGFAP levels rarely occurred during interattack periods in individuals with NMOSD; however, a certain degree of astrocyte damage did occur at the time of clinical attacks without exception, but it was not evident within 3 months of the attack.

Indexed as

AdultAstrocytesBiomarkersCohort StudiesFemaleGlial Fibrillary Acidic ProteinHealthy VolunteersHumansLongitudinal StudiesMaleNeurofilament ProteinsNeuromyelitis OpticaRandom AllocationRepublic of KoreaRituximabBiomarkersGlial Fibrillary Acidic ProteinNeurofilament ProteinsRituximab

Identifiers

PMID33846219
PMCPMC8054958
OpenAlexW3153838418

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.