Evidence map›Paper›PMID 30464029›Full record

ArticleJournal of neurology, neurosurgery, and psychiatry2018

Developing and validating Parkinson's disease subtypes and their motor and cognitive progression.

Michael Lawton, Yoav Ben-Shlomo, Margaret T May, Fahd Baig, Thomas R Barber, Johannes C Klein, Diane M A Swallow, Naveed Malek, Katherine A Grosset, Nin Bajaj and 8 more

Abstract read
In one paragraph

Article in Journal of neurology, neurosurgery, and psychiatry, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
101citing papers in PubMed, 3 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

101 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Genome-Wide Association Studies of Cognitive and Motor Progression in Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2021
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Journal of Parkinson's disease · 2026
    Review
  6. One-Year Substantia NigraMovement disorders : official journal of the Movement Disorder Society · 2026
    Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

41 more citing papers are in PubMed but not listed here.

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

18 authors.

Michael LawtonDepartment of Population Health Sciences, University of Bristol, Bristol, UK Michael.Lawton@bristol.ac.uk.ORCID 0000-0002-3419-0354
Yoav Ben-ShlomoDepartment of Population Health Sciences, University of Bristol, Bristol, UK.
Margaret T MayDepartment of Population Health Sciences, University of Bristol, Bristol, UK.
Fahd BaigNuffield Department of Clinical Neurosciences, Division of Clinical Neurology, University of Oxford, Oxford, UK.
Thomas R BarberNuffield Department of Clinical Neurosciences, Division of Clinical Neurology, University of Oxford, Oxford, UK.
Johannes C KleinNuffield Department of Clinical Neurosciences, Division of Clinical Neurology, University of Oxford, Oxford, UK.
Diane M A SwallowInstitute of Applied Health Sciences, University of Aberdeen, Aberdeen, UK.
Naveed MalekDepartment of Neurology, Institute of Neurological Sciences, Glasgow, UK.
Katherine A GrossetDepartment of Neurology, Institute of Neurological Sciences, Glasgow, UK.
Nin BajajDepartment of Neurology, Queen's Medical Centre, Nottingham, UK.
Roger A BarkerClinical Neurosciences, John van Geest Centre for Brain Repair, Cambridge, UK.
Nigel WilliamsCardiff University, Institute of Psychological Medicine and Clinical Neurosciences, Cardiff, UK.
David J BurnFaculty of Medical Sciences, Newcastle University, Newcastle, UK.
Thomas FoltynieSobell Department of Motor Neuroscience, UCL Institute of Neurology, London, UK.
Huw R MorrisDepartment of Clinical Neuroscience, UCL Institute of Neurology, London, UK.
Nicholas W WoodDepartment of Molecular Neuroscience, UCL Institute of Neurology, London, UK.
Donald G Grosset *Department of Neurology, Institute of Neurological Sciences, Glasgow, UK.
Michele T M Hu *Nuffield Department of Clinical Neurosciences, Division of Clinical Neurology, University of Oxford, Oxford, UK.

Funding

Department of HealthMedical Research Council G0700943Medical Research Council MC_EX_MR/N50192X/1Medical Research Council MR/L010305/1Medical Research Council MR/L023784/1Medical Research Council MR/M024962/1Parkinson's UK H-1703Parkinson's UK J-0901Parkinson's UK J-1101Wellcome Trust
6 · The paper itself

Abstract

objectivesTo use a data-driven approach to determine the existence and natural history of subtypes of Parkinson's disease (PD) using two large independent cohorts of patients newly diagnosed with this condition.

methods1601 and 944 patients with idiopathic PD, from Tracking Parkinson's and Discovery cohorts, respectively, were evaluated in motor, cognitive and non-motor domains at the baseline assessment. Patients were recently diagnosed at entry (within 3.5 years of diagnosis) and were followed up every 18 months. We used a factor analysis followed by a k-means cluster analysis, while prognosis was measured using random slope and intercept models.

resultsWe identified four clusters: (1)

conclusionsWe have found four novel clusters that replicated well across two independent early PD cohorts and were associated with levodopa response and motor progression rates. This has potential implications for better understanding disease pathophysiology and the relevance of patient stratification in future clinical trials.

Indexed as

AgedDisease ProgressionFemaleHumansLevodopaMaleNeuropsychological TestsParkinson DiseaseProspective StudiesPsychiatric Status Rating ScalesSeverity of Illness IndexLevodopa

Identifiers

PMID30464029
PMCPMC6288789

What OpenQuestion 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 OpenQuestion graph.