Evidence map›Paper›PMID 34062649›Full record

ArticleJournal of movement disorders2021

Dystonia Responsive to Dopamine: POLG Mutations Should Be Considered If Sensory Neuropathy Is Present.

Jessica Qiu, Kishore Raj Kumar, Eloise Watson, Kate Ahmad, Carolyn M Sue, Michael W Hayes

Open access · diamondAbstract readCase Reports
In one paragraph

Article in Journal of movement disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.7field-weighted citation impact, top 31% 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

6 citing papers in PubMed, 10 citations in OpenAlex.

  1. Multi-ancestry analysis ofmedRxiv : the preprint server for health sciences · 2026
    Article
  2. Article
  3. Review
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  5. PossibleMovement disorders clinical practice · 2022
    Review
  6. 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

6 authors at 4 institutions in 1 country.

Jessica QiuDepartment of Neurology, Concord Repatriation General Hospital, Sydney, Australia.
Kishore Raj KumarDepartment of Neurology, Concord Repatriation General Hospital, Sydney, Australia.
Eloise WatsonDepartment of Neurogenetics, Kolling Institute, University of Sydney and Royal North Shore Hospital, St Leonards, Australia.
Kate AhmadDepartment of Neurogenetics, Kolling Institute, University of Sydney and Royal North Shore Hospital, St Leonards, Australia.
Carolyn M SueDepartment of Neurogenetics, Kolling Institute, University of Sydney and Royal North Shore Hospital, St Leonards, Australia.
Michael W HayesDepartment of Neurology, Concord Repatriation General Hospital, Sydney, Australia.
Concord Repatriation General Hospital · AUUniversity of Sydney · AUGarvan Institute of Medical Research · AURoyal North Shore Hospital · AU

Funding

Aligning Science Across Parkinson's (ASAP) initiativeMichael J. Fox FoundationPaul Ainsworth Family Foundation
6 · The paper itself

Abstract

The POLG gene encodes mitochondrial DNA polymerase, and mutations in this gene cause a spectrum of disorders related to mitochondrial DNA depletion or deletion. Dystonia has only rarely been reported as an early and prominent manifestation of POLG mutations. We report a case of a 30-year-old male presenting with lower limb dystonia with peripheral neuropathy and demonstrate that the dystonia was levodopa responsive (with video findings). Whole-genome sequencing revealed biallelic variants in the POLG gene: a known pathogenic variant [NM_001126131.2:c.2209G>C (p.Gly737Arg)] and a novel likely pathogenic variant [NM_001126131.2:c.3305A>C (p.Gln1102Pro)]. A genetic diagnosis was made before the appearance of more readily recognizable features of mitochondrial disease, allowing us to avoid invasive tissue biopsies or potentially deleterious treatments, such as sodium valproate. A POLG-related disorder should be suspected in cases of dystonia with peripheral neuropathy, and this diagnosis may have implications for further investigations and management.

Indexed as

DystoniaGeneticsParkinsonismPeripheral NeuropathiesPOLG

Identifiers

PMID34062649
PMCPMC8175819
OpenAlexW3164305466

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.