Evidence map›Paper›PMID 23645593›Full record

SynthesisNeurology2013

Two-stage association study and meta-analysis of mitochondrial DNA variants in Parkinson disease.

Gavin Hudson, Mike Nalls, Jonathan R Evans, David P Breen, Sophie Winder-Rhodes, Karen E Morrison, Huw R Morris, Caroline H Williams-Gray, Roger A Barker, Andrew B Singleton and 4 more

Open access · bronzeAbstract readMeta-Analysis
In one paragraph

Synthesis in Neurology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 3 pooled it
5.7field-weighted citation impact, top 3% 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

78 citing papers in PubMed, 3 syntheses or guidelines pooled it, 144 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Association of mitochondrial DNA levels with frailty and all-cause mortality.Journal of molecular medicine (Berlin, Germany) · 2015
    Pooled it
  4. Trial
  5. Article
  6. Article
  7. Review
  8. Mitochondrial dysfunction, cause or consequence in neurodegenerative diseases?BioEssays : news and reviews in molecular, cellular and developmental biology · 2025
    Review
  9. The Association of Mitochondrial tRNANeuropsychiatric disease and treatment · 2025
    Article
  10. Article
  11. Review
  12. Investigating the Protective Role of the Mitochondrial 2158 T > C Variant in Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2024
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article

18 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

14 authors at 6 institutions in 2 countries.

Gavin HudsonWellcome Centre for Mitochondrial Research, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK.
Mike Nalls
Jonathan R Evans
David P Breen
Sophie Winder-Rhodes
Karen E Morrison
Huw R Morris
Caroline H Williams-Gray
Roger A Barker
Andrew B Singleton
John Hardy
Nicholas E Wood
David J Burn
Patrick F Chinnery
Cardiff University · GBNational Institute on Aging · USNational Institutes of Health · USUniversity College London · GBUniversity of Birmingham · GBMedical Research Council · GB

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
Intramural NIH HHSMedical Research Council G0700943Medical Research Council G0701075Medical Research Council G1100643Medical Research Council MC_G0901330Medical Research Council MC_G1000735Medical Research Council MC_PC_09003Medical Research Council MR/K000608/1NIA NIH HHS Z01 AG000949-06Parkinson's UK F-1202Parkinson's UK G-0618Parkinson's UK G-1107Parkinson's UK J-0804Wellcome Trust 089698Wellcome Trust 096919Wellcome Trust 101876
6 · The paper itself

Abstract

objectivesPrevious associations between mitochondrial DNA (mtDNA) and idiopathic Parkinson disease (PD) have been inconsistent and contradictory. Our aim was to resolve these inconsistencies and determine whether mtDNA has a significant role in the risk of developing PD.

methodsTwo-stage genetic association study of 138 common mtDNA variants in 3,074 PD cases and 5,659 ethnically matched controls followed by meta-analysis of 6,140 PD cases and 13,280 controls.

resultsIn the association study, m.2158T>C and m.11251A>G were associated with a reduced risk of PD in both the discovery and replication cohorts. None of the common European mtDNA haplogroups were consistently associated with PD, but pooling of discovery and replication cohorts revealed a protective association with "super-haplogroup" JT. In the meta-analysis, there was a reduced risk of PD with haplogroups J, K, and T and super-haplogroup JT, and an increase in the risk of PD with super-haplogroup H.

conclusionsIn a 2-stage association study of mtDNA variants and PD, we confirm the reduced risk of PD with super-haplogroup JT and resolve this at the J1b level. Meta-analysis explains the previous inconsistent associations that likely arise through sampling effects. The reduced risk of PD with haplogroups J, K, and T is mirrored by an increased risk of PD in super-haplogroup HV, which increases survival after sepsis. Antagonistic pleiotropy between mtDNA haplogroups may thus be shaping the genetic landscape in humans, leading to an increased risk of PD in later life.

Indexed as

Cohort StudiesDNA, MitochondrialGenetic Association StudiesGenetic Predisposition to DiseaseGenetic VariationHumansParkinson DiseaseRiskUnited KingdomDNA, Mitochondrial

Identifiers

PMID23645593
PMCPMC3716399
OpenAlexW1999232243

What OpenQuestion holds

Textmetadata
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.