Evidence map›Paper›PMID 31211166›Full record

ArticleAnnals of clinical and translational neurology2019

Alicia Garrido, Graham Fairfoul, Eduardo S Tolosa, Maria José Martí, Alison Green, Barcelona LRRK2 Study Group

Open access · goldAbstract read
In one paragraph

Article in Annals of clinical and translational neurology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 2 pooled it
8.9field-weighted citation impact, top 2% 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

66 citing papers in PubMed, 2 syntheses or guidelines pooled it, 114 citations in OpenAlex.

  1. Pooled it
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  12. Regional cortical network atrophy predicts progression to dementia in the Lewy body diseases.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
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  16. Article
  17. The α-Synuclein Seeding Amplification Assay for Parkinson's Disease.International journal of molecular sciences · 2025
    Review
  18. Article
  19. Review
  20. Article

6 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

6 authors at 2 institutions in 2 countries.

Alicia GarridoParkinson's Disease and Movement Disorders Unit Institut Clínic de Neurociències Hospital Clinic de Barcelona Barcelona Spain.ORCID 0000-0003-0652-6348
Graham FairfoulThe National CJD Research & Surveillance Unit Centre for Clinical Brain Sciences University of Edinburgh Edinburgh EH4 2XU United Kingdom.
Eduardo S TolosaCentre for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED) Madrid Spain.
Maria José MartíParkinson's Disease and Movement Disorders Unit Institut Clínic de Neurociències Hospital Clinic de Barcelona Barcelona Spain.
Alison GreenThe National CJD Research & Surveillance Unit Centre for Clinical Brain Sciences University of Edinburgh Edinburgh EH4 2XU United Kingdom.
Barcelona LRRK2 Study Group
Biomedical Research Networking Center on Neurodegenerative Diseases · ESUniversity of Edinburgh · GB

Funding

Chief Scientist Office ETM/315
6 · The paper itself

Abstract

backgroundLeucine-rich kinase 2 (LRRK2)-linked Parkinson's disease (PD) is clinically indistinguishable from idiopathic PD (IPD). A pleiotropic neuropathology has been recognized but the majority of studies in LRRK2 p.G2019S patients reveal Lewy-type synucleinopathy as its principal histological substrate. To date no in vivo biomarkers of synucleinopathy have been found in LRRK2 mutation carriers.

objectivesWe used real-time quaking-induced conversion (RT-QuIC) technique to assess the presence of alpha-synuclein (a-syn) aggregates in cerebrospinal fluid (CSF) of LRRK2 p.G2019S carriers.

methodsCSF samples of 51 subjects were analyzed: 15 LRRK2 p.G2019S PD, 10 IPD, 16 LRRK2 p.G2019S nonmanifesting carriers (NMC) and 10 healthy controls. The presence of parkinsonism and prodromal symptoms was assessed in all study subjects.

resultsForty percent (

interpretationRT-QuIC detects a-syn aggregation in CSF in a significant number of patients with LRRK2-PD, but less frequently than in IPD. A small percentage of LRRK2-NMC tested also positive. If appropriately validated in long-term studies with large number of mutation carriers, and hopefully, postmortem or in vivo confirmation of histopathology, RT-QuIC could contribute to the selection of candidates to receive disease modifying drugs, in particular treatments targeting a-syn deposition.

Indexed as

AdultAgedalpha-SynucleinBiomarkersCerebrospinal FluidFemaleHumansLeucine-Rich Repeat Serine-Threonine Protein Kinase-2MaleMiddle AgedMutationParkinson Diseasealpha-SynucleinBiomarkersLeucine-Rich Repeat Serine-Threonine Protein Kinase-2

Identifiers

PMID31211166
PMCPMC6562027
OpenAlexW2944521680

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.