Evidence map›Paper›PMID 37066922›Full record

ReviewJournal of Parkinson's disease2023

Proposal for a Biologic Staging System of Parkinson's Disease.

Lana M Chahine, Kalpana Merchant, Andrew Siderowf, Todd Sherer, Caroline Tanner, Kenneth Marek, Tanya Simuni

Abstract readReview
In one paragraph

Review in Journal of Parkinson's disease, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

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

  1. Examining the lived experience of dementia with Lewy bodies through qualitative research: A systematic review.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Progression ofFrontiers in aging neuroscience · 2026
    Article
  7. Article
  8. Exidavnemab binds to aggregated α-synuclein in human brains affected by α-synucleinopathies.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Article
  9. Article
  10. Article
  11. Article
  12. Association between ultra-short heart rate variability and risk of Parkinson's disease: a prospective cohort study.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
    Article
  13. Whole transcriptome analysis of peripheral blood mononuclear cells from de novo and drug-naive Parkinson's disease patients.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Article
  14. Article
  15. Article
  16. Peripheral Mononuclear Cell Mitochondrial Function Associates with T-Cell Cytokines in Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  17. Article
  18. Article
  19. Review
  20. Article
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

7 authors.

Lana M ChahineDepartment of Neurology, University of Pittsburgh, Pittsburgh, PA, USA.
Kalpana MerchantNorthwestern University Feinberg School of Medicine, Chicago, IL, USA.
Andrew SiderowfDepartment of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
Todd ShererThe Michael J Fox Foundation for Parkinson's Research, New York, NY, USA.
Caroline TannerDepartment of Neurology, Weill Institute for Neurosciences, University of San Francisco, San Francisco, CA, USA.
Kenneth MarekInstitute for Neurodegeneration, New Haven, CT, USA.
Tanya SimuniDepartment of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Parkinson's disease (PD) research field has seen the advent of several promising biomarkers and a deeper understanding of the clinical features of the disease from the earliest stages of pathology to manifest disease. Despite progress, a biologically based PD staging system does not exist. Such staging would be a useful framework within which to model the disease, develop and validate biomarkers, guide therapeutic development, and inform clinical trials design. We propose that the presence of aggregated neuronal α-synuclein, dopaminergic neuron dysfunction/degeneration, and clinical signs and symptoms identifies a group of individuals that have Lewy body pathology, which in early stages manifests with what is now referred to as prodromal non-motor features and later stages with the manifestations of PD and related Lewy body diseases as defined by clinical diagnostic criteria. Based on the state of the field, we herein propose a definition and staging of PD based on biology. We present the biologic basis for such a staging system and review key assumptions and evidence that support the proposed approach. We identify gaps in knowledge and delineate crucial research priorities that will inform the ultimate integrated biologic staging system for PD.

Indexed as

Biological ProductsLewy Body DiseaseParkinson Diseasealpha-SynucleinBiomarkersHumansLewy BodiesNerve DegenerationProdromal Symptomsalpha-SynucleinBiological ProductsBiomarkersalpha-synucleinbiomarkersdisease stagingParkinson’s disease

Identifiers

PMID37066922
PMCPMC10200239

What Socratic 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 Socratic graph.