Evidence map›Paper›PMID 33639572›Full record

ArticleParkinsonism & related disorders2021

Serum NFL levels predict progression of motor impairment and reduction in putamen dopamine transporter binding ratios in de novo Parkinson's disease: An 8-year longitudinal study.

Rong Ye, Joseph J Locascio, Anna E Goodheart, Moqing Quan, Baorong Zhang, Stephen N Gomperts

Open access · greenAbstract read
In one paragraph

Article in Parkinsonism & related disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 4% 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

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

  1. Pooled it
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  5. Regional cortical network atrophy predicts progression to dementia in the Lewy body diseases.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
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  18. 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

6 authors at 2 institutions in 2 countries.

Rong YeDepartment of Neurology, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou, China; Department of Neurology, Massachusetts General Hospital, Boston, USA.
Joseph J LocascioDepartment of Neurology, Massachusetts General Hospital, Boston, USA.
Anna E GoodheartDepartment of Neurology, Massachusetts General Hospital, Boston, USA.
Moqing QuanDepartment of Neurology, Massachusetts General Hospital, Boston, USA.
Baorong ZhangDepartment of Neurology, Second Affiliated Hospital of School of Medicine, Zhejiang University, Hangzhou, China. Electronic address: brzhang@zju.edu.cn.
Stephen N GompertsDepartment of Neurology, Massachusetts General Hospital, Boston, USA. Electronic address: gomperts.stephen@mgh.harvard.edu.
Massachusetts General Hospital · USSecond Affiliated Hospital of Zhejiang University · CN

Funding

THE ROLE OF ADVANCED CAA IN ALZHEIMER'S DEMENTIAP50AG005134 · NIA · MASSACHUSETTS GENERAL HOSPITAL · PI HYMAN, BRADLEY T. · 1985 to 2018
$42.1M
Research Education ComponentP30AG062421 · NIA · MASSACHUSETTS GENERAL HOSPITAL · PI Christine S Ritchie · 2019 to 2026
$36.5M
Impact of Amyloid Beta on Hippocampal Neurophysiology and Calcium Activity across the Sleep-Wake CycleR01AG054551 · NIA · MASSACHUSETTS GENERAL HOSPITAL · PI GOMPERTS, STEPHEN N. · 2017 to 2021
$2.1M
Imaging Epigenetic Mechanisms in Parkinson's Disease with [11C]MartinostatR21NS109833 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI GOMPERTS, STEPHEN N., WANG, CHANGNING · 2018 to 2019
$463k
NIA NIH HHS P30 AG062421NIA NIH HHS P50 AG005134NIA NIH HHS R01 AG054551NINDS NIH HHS R21 NS109833
6 · The paper itself

Abstract

Neurofilament light chain (NFL) level in biofluids is a sensitive measure of axonal damage and a promising biomarker in neurodegenerative diseases. In Parkinson's disease (PD), NFL can distinguish PD from other parkinsonian disorders, and NFL concentration is associated with disease severity, risk of progression, and survival. To determine whether serum NFL at baseline in de novo PD predicts motor decline, differentially impacts specific motor features, predicts cognitive decline, and predicts loss of dopamine terminals, here we evaluated 376 de novo PD patients from the PPMI database and analyzed the effect of baseline serum NFL levels on progression over eight years of motor impairment measured with the UPDRS, cognitive function measured with the MoCA, and putamen dopamine transporter (DAT) binding ratio measured with DaTscan. In longitudinal mixed effects models that controlled for age, gender, disease duration, and levodopa equivalent drug dose, higher levels of serum NFL at baseline were associated with greater increases of UPDRS-III and total UPDRS scores, with greater worsening of postural instability and gait disorder (PIGD) scores but not tremor scores over time. In contrast, baseline serum NFL was not associated with significant progression of MoCA scores in this de novo PD cohort. Higher baseline serum NFL was associated with greater reduction of putamen DAT binding ratio over time. Together, these findings show that baseline serum NFL levels predict the rate of motor decline, the accumulation of PIGD clinical features, and the progression of dopamine transporter loss in the early stage of PD.

Indexed as

Disease ProgressionAgedDopamine Plasma Membrane Transport ProteinsFemaleFollow-Up StudiesHumansLongitudinal StudiesMaleMiddle AgedNeurofilament ProteinsParkinson DiseasePrognosisPutamenTomography, Emission-Computed, Single-PhotonDopamine Plasma Membrane Transport Proteinsneurofilament protein LNeurofilament ProteinsDopamine transporter uptakeLongitudinal studyMotor declineNeurofilament light chainParkinson's diseasePIGD

Identifiers

PMID33639572
PMCPMC8714021
OpenAlexW3131407247

What OpenQuestion holds

Textmetadata
LicenceTDM
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.