Evidence map›Paper›PMID 34806619›Full record

Observational studyJournal of Parkinson's disease2022

Serum Neurofilament Light Chain as a Marker of Progression in Parkinson's Disease: Long-Term Observation and Implications of Clinical Subtypes.

Emil Ygland Rödström, Niklas Mattsson-Carlgren, Shorena Janelidze, Oskar Hansson, Andreas Puschmann

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Journal of Parkinson's disease, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.2field-weighted citation impact, top 10% 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

21 citing papers in PubMed, 29 citations in OpenAlex.

  1. Frailty in Parkinson's disease: time to integrate it into treatment decision-making?Journal of neural transmission (Vienna, Austria : 1996) · 2026
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  11. Evaluation of ATNNeurology · 2024
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  17. Blood neurofilament light chain in Parkinson's disease.Journal of neural transmission (Vienna, Austria : 1996) · 2023
    Review
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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

5 authors at 1 institution in 1 country.

Emil Ygland RödströmDepartment of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden.
Niklas Mattsson-CarlgrenDepartment of Neurology, Skåne University Hospital, Lund, Sweden.
Shorena JanelidzeWallenberg Center for Molecular Medicine, Lund University, Lund, Sweden.
Oskar HanssonDepartment of Clinical Sciences Malmö, Clinical Memory Research Unit, Lund University, Malmö, Sweden.
Andreas PuschmannDepartment of Clinical Sciences Lund, Neurology, Lund University, Lund, Sweden.
Lund University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBiochemical and clinical biomarkers correlate with progression rate and disease severity in Parkinson's disease (PD) but are not sufficiently studied in late PD.

objectiveTo examine how serum neurofilament light chain (S-NfL) alone or combined with clinical classifications predicts PD outcome in later disease stages.

methodsEighty-five patients with 7.9±5.1 years of PD duration were included in an observational cohort. Clinical scores were obtained at two separate examinations 8.2±2.0 years apart. S-NfL levels were determined with single molecule array (SiMoA). Five predefined disease progression milestones were assessed. After affirming combination potential of S-NfL and either of two clinical classifications, three combined models were constructed based on these factors and age at onset in different combinations.

resultsS-NfL levels showed significant hazard ratios for four out of five disease progression milestones: walking-aid usage (HR 3.5; 95% CI 1.4-8.5), nursing home living (5.1; 2.1-12.5), motor end-stage (6.2; 2.1-17.8), and death (4.1; 1.7-9.7). Higher S-NfL levels were associated with lower ability in activities of daily living and poorer cognition at baseline and/or at follow-up. Combined models showed significantly improved area under receiver operating characteristic curves (0.77-0.91) compared to S-NfL levels alone (0.68-0.71) for predicting the five disease milestones.

conclusionS-NfL levels stratified patients according to their likelihood to reach clinically relevant progression milestones during this long-term observational study. S-NfL alone reflected motor and social outcomes in later stages of PD. Combining S-NfL with clinical factors was possible and exploratory combined models improved prognostic accuracy.

Indexed as

Parkinson DiseaseActivities of Daily LivingBiomarkersDisease ProgressionHumansIntermediate FilamentsNeurofilament ProteinsBiomarkersNeurofilament Proteinsbiomarkersdementiamortalityneurofilament proteinsParkinson’s diseaseprognosis

Identifiers

PMID34806619
PMCPMC8925110
OpenAlexW3215724596

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.