Evidence map›Paper›PMID 25773351›Full record

ArticleAnnals of neurology2015

Polygenic risk of Parkinson disease is correlated with disease age at onset.

Valentina Escott-Price, International Parkinson's Disease Genomics Consortium, Mike A Nalls, Huw R Morris, Steven Lubbe, Alexis Brice, Thomas Gasser, Peter Heutink, Nicholas W Wood, John Hardy and 3 more

Abstract read
In one paragraph

Article in Annals of neurology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed, 2 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

83 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Early-Onset Parkinson's Disease: Unique Features and Management Approaches.Current neurology and neuroscience reports · 2025
    Review
  9. Genetic Modifiers of Parkinson's Disease: A Case-Control Study.Annals of clinical and translational neurology · 2025
    Observational
  10. COVID-19 Alters Inflammatory, Mitochondrial, and Protein Clearance Pathway Genes: Potential Implications for New-onset Parkinsonism in Patients.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2025
    Article
  11. Observational
  12. Identification of Novel Genetic Loci Affecting Age at Onset of Parkinson's Disease: A Genome-wide Association Study.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Parkinson's Disease is Predominantly a Genetic Disease.Journal of Parkinson's disease · 2024
    Review

23 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

13 authors.

Valentina Escott-PriceInstitute of Psychological Medicine and Clinical Neurosciences, Medical Research Council Centre for Neuropsychiatric Genetics and Genomics, Department of Psychological Medicine and Neurology, Cardiff University School of Medicine, Cardiff, United Kingdom.
International Parkinson's Disease Genomics Consortium
Mike A Nalls
Huw R Morris
Steven Lubbe
Alexis Brice
Thomas Gasser
Peter Heutink
Nicholas W Wood
John Hardy
Andrew B Singleton
Nigel M Williams
IPDGC consortium members

Funding

Genome wide SNP analysis in Parkinson's diseaseZIAAG000949 · NIA · NATIONAL INSTITUTE ON AGING · PI SINGLETON, ANDREW · 2009 to 2024
$12.6M
Genome wide SNP analysis in Parkinson's diseaseZ01AG000949 · NIA · NATIONAL INSTITUTE ON AGING · PI SINGLETON, ANDREW B · 2006 to 2008
$2.6M
MIDCAREER AWARD IN PATIENT ORIENTED RESEARCH ON AGINGK24AG000949 · NIA · YALE UNIVERSITY · PI INOUYE, SHARON K. · 1999 to 2009
$1.4M
Genetic Analysis Of Alzheimer's DiseaseZ01AG000950 · NIA · NATIONAL INSTITUTE ON AGING · PI SINGLETON, ANDREW · 2002 to 2008
$1.0M
Intramural NIH HHS Z01 AG000949Intramural NIH HHS Z01 AG000950Medical Research Council G0700943Medical Research Council G1100643Medical Research Council MC_G1000735Medical Research Council MR/L010305/1Medical Research Council MR/L023784/2Medical Research Council MR/L501554/1NIA NIH HHS K24 AG000949NIA NIH HHS Z01 AG000949-06NIA NIH HHS Z01 AG000950-10Parkinson's UK G-0612Parkinson's UK G-0907Parkinson's UK J-0804Wellcome Trust 089698
6 · The paper itself

Abstract

objectiveWe have investigated the polygenic architecture of Parkinson disease (PD) and have also explored the potential relationship between an individual's polygenic risk score and their disease age at onset.

methodsThis study used genotypic data from 4,294 cases and 10,340 controls obtained from the meta-analysis of PD genome-wide association studies. Polygenic score analysis was performed as previously described by the International Schizophrenia Consortium, testing whether the polygenic score alleles identified in 1 association study were significantly enriched in the cases relative to the controls of 3 independent studies. Linear regression was used to investigate the relationship between an individual's polygenic score for PD risk alleles and disease age at onset.

resultsOur polygenic score analysis has identified significant evidence for a polygenic component enriched in the cases of each of 3 independent PD genome-wide association cohorts (minimum p = 3.76 × 10(-6) ). Further analysis identified compelling evidence that the average polygenic score in patients with an early disease age at onset was significantly higher than in those with a late age at onset (p = 0.00014).

interpretationThis provides strong support for a large polygenic contribution to the overall heritable risk of PD and also suggests that early onset forms of the illness are not exclusively caused by highly penetrant Mendelian mutations, but can also be contributed to by an accumulation of common polygenic alleles with relatively low effect sizes.

Indexed as

AgedAged, 80 and overAge of OnsetFemaleGenetic Predisposition to DiseaseHumansMaleMiddle AgedMultifactorial InheritanceParkinson DiseasePolymorphism, Single NucleotideRetrospective StudiesRisk Factors

Identifiers

PMID25773351
PMCPMC4737223

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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.