Evidence map›Paper›PMID 37248302›Full record

ArticleNature medicine2023

Propagative α-synuclein seeds as serum biomarkers for synucleinopathies.

Ayami Okuzumi, Taku Hatano, Gen Matsumoto, Shuko Nojiri, Shin-Ichi Ueno, Yoko Imamichi-Tatano, Haruka Kimura, Soichiro Kakuta, Akihide Kondo, Takeshi Fukuhara and 12 more

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Nature medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 180 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
180citing papers in PubMed, 4 pooled it
61.3field-weighted citation impact, top 1% 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

180 citing papers in PubMed, 4 syntheses or guidelines pooled it, 295 citations in OpenAlex.

  1. Pooled it
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  3. Digital Outcomes as Biomarkers of Disease Progression in Early Parkinson's Disease: A Systematic Review.Movement disorders : official journal of the Movement Disorder Society · 2025
    Pooled it
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  14. Rethinking Mitochondrial Parkinson's Disease in the α-Synuclein Seed Amplification Assays Era.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
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  18. ATNIVS biomarker heterogeneity in real-world patients receiving lecanemab.The journal of prevention of Alzheimer's disease · 2026
    Article
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120 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

22 authors at 8 institutions in 2 countries.

Ayami OkuzumiDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.ORCID 0000-0001-8044-5402
Taku HatanoDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.ORCID 0000-0002-6808-0444
Gen MatsumotoDepartment of Histology and Cell Biology, Nagasaki University School of Medicine, Nagasaki, Japan.
Shuko NojiriMedical Technology Innovation Center, Juntendo University Faculty of Medicine, Tokyo, Japan.
Shin-Ichi UenoDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.ORCID 0000-0003-4133-3605
Yoko Imamichi-TatanoDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.ORCID 0000-0001-6830-456X
Haruka KimuraDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.ORCID 0009-0004-2632-1352
Soichiro KakutaLaboratory of Morphology and Image Analysis, Biomedical Research Core Facilities, Juntendo University Faculty of Medicine, Tokyo, Japan.ORCID 0000-0001-9434-4944
Akihide KondoDepartment of Neurosurgery, Juntendo University Faculty of Medicine, Tokyo, Japan.ORCID 0000-0003-1729-4490
Takeshi FukuharaNeurodegenerative Disorders Collaboration Laboratory, RIKEN Center for Brain Science, Saitama, Japan.
Yuanzhe LiDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.
Manabu FunayamaDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.ORCID 0000-0002-7412-3631
Shinji SaikiDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.ORCID 0000-0002-9732-8488
Daisuke TaniguchiDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.
Taiji TsunemiDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.
Deborah McIntyreTransversal Translational Medicine, Luxembourg Institute of Health (LIH), Strassen, Luxembourg.
Jean-Jacques GérardyLuxembourg National Center of Pathology (NCP), Laboratoire National de Santé (LNS); Department of Cancer Research (DOCR), Luxembourg Institute of Health (LIH); Luxembourg Centre of Neuropathology (LCNP), Luxembourg Centre for Systems Biomedicine (LCSB), Faculty of Science, Technology and Medicine (FSTM) and Department of Life Sciences and Medicine (DLSM), University of Luxembourg, Esch-sur-Alzette, Luxembourg.
Michel MittelbronnLuxembourg National Center of Pathology (NCP), Laboratoire National de Santé (LNS); Department of Cancer Research (DOCR), Luxembourg Institute of Health (LIH); Luxembourg Centre of Neuropathology (LCNP), Luxembourg Centre for Systems Biomedicine (LCSB), Faculty of Science, Technology and Medicine (FSTM) and Department of Life Sciences and Medicine (DLSM), University of Luxembourg, Esch-sur-Alzette, Luxembourg.
Rejko KrugerTransversal Translational Medicine, Luxembourg Institute of Health (LIH), Strassen, Luxembourg.
Yasuo UchiyamaDepartment of Cellular and Molecular Neuropathology, Juntendo University Faculty of Medicine, Tokyo, Japan.
Nobuyuki NukinaLaboratory of Structural Neuropathology, Graduate School of Brain Science, Doshisha University, Kyoto, Japan.
Nobutaka HattoriDepartment of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan. nhattori@juntendo.ac.jp.ORCID 0000-0002-2034-2556
Juntendo University · JPRIKEN Center for Brain Science · JPUniversity of Luxembourg · LUCentre Hospitalier de Luxembourg · LUDoshisha University · JPLuxembourg Institute of Health · LUNagasaki University · JPUniversity of Tsukuba · JP

Funding

Japan Agency for Medical Research and Development (AMED) 21dm0207070Japan Agency for Medical Research and Development (AMED) 21wm0425015MEXT | Japan Society for the Promotion of Science (JSPS) 19K16928MEXT | Japan Society for the Promotion of Science (JSPS) 21H04820MEXT | Japan Society for the Promotion of Science (JSPS) 21K07424
6 · The paper itself

Abstract

Abnormal α-synuclein aggregation is a key pathological feature of a group of neurodegenerative diseases known as synucleinopathies, which include Parkinson's disease (PD), dementia with Lewy bodies and multiple system atrophy (MSA). The pathogenic β-sheet seed conformation of α-synuclein is found in various tissues, suggesting potential as a biomarker, but few studies have been able to reliably detect these seeds in serum samples. In this study, we developed a modified assay system, called immunoprecipitation-based real-time quaking-induced conversion (IP/RT-QuIC), which enables the detection of pathogenic α-synuclein seeds in the serum of individuals with synucleinopathies. In our internal first and second cohorts, IP/RT-QuIC showed high diagnostic performance for differentiating PD versus controls (area under the curve (AUC): 0.96 (95% confidence interval (CI) 0.95-0.99)/AUC: 0.93 (95% CI 0.84-1.00)) and MSA versus controls (AUC: 0.64 (95% CI 0.49-0.79)/AUC: 0.73 (95% CI 0.49-0.98)). IP/RT-QuIC also showed high diagnostic performance in differentiating individuals with PD (AUC: 0.86 (95% CI 0.74-0.99)) and MSA (AUC: 0.80 (95% CI 0.65-0.97)) from controls in a blinded external cohort. Notably, amplified seeds maintained disease-specific properties, allowing the differentiation of samples from individuals with PD versus MSA. In summary, here we present a novel platform that may allow the detection of individuals with synucleinopathies using serum samples.

Indexed as

Lewy Body DiseaseMultiple System AtrophyParkinson DiseaseSynucleinopathiesalpha-SynucleinBiomarkersHumansalpha-SynucleinBiomarkers

Identifiers

PMID37248302
PMCPMC10287557
OpenAlexW4378637394

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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.