Evidence map›Paper›PMID 33649398›Full record

ArticleScientific reports2021

Investigating the relationship between the SNCA gene and cognitive abilities in idiopathic Parkinson's disease using machine learning.

Mehrafarin Ramezani, Pauline Mouches, Eunjin Yoon, Deepthi Rajashekar, Jennifer A Ruskey, Etienne Leveille, Kristina Martens, Mekale Kibreab, Tracy Hammer, Iris Kathol and 7 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 4 pooled it
2.2field-weighted citation impact, top 10% 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

15 citing papers in PubMed, 4 syntheses or guidelines pooled it, 25 citations in OpenAlex.

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  15. The Impact ofLife (Basel, Switzerland) · 2021
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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

17 authors at 4 institutions in 1 country.

Mehrafarin RamezaniDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Pauline MouchesHotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada.
Eunjin YoonDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Deepthi RajashekarHotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada.
Jennifer A RuskeyMontreal Neurological Institute, McGill University, Montreal, QC, Canada.
Etienne LeveilleMontreal Neurological Institute, McGill University, Montreal, QC, Canada.
Kristina MartensHotchkiss Brain Institute (HBI), Cummings School of Medicine, University of Calgary, Calgary, AB, Canada.
Mekale KibreabDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Tracy HammerDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Iris KatholDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Nadia MaaroufDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Justyna SarnaDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Davide MartinoDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Gerald PfefferDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Ziv Gan-OrMontreal Neurological Institute, McGill University, Montreal, QC, Canada.
Nils D ForkertDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
Oury MonchiDepartment of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada. oury.monchi@ucalgary.ca.
University of Calgary · CAMcGill University · CAAlberta Children's Hospital · CAMontreal Neurological Institute and Hospital · CA

Funding

CIHR PJT-166123
6 · The paper itself

Abstract

Cognitive impairments are prevalent in Parkinson's disease (PD), but the underlying mechanisms of their development are unknown. In this study, we aimed to predict global cognition (GC) in PD with machine learning (ML) using structural neuroimaging, genetics and clinical and demographic characteristics. As a post-hoc analysis, we aimed to explore the connection between novel selected features and GC more precisely and to investigate whether this relationship is specific to GC or is driven by specific cognitive domains. 101 idiopathic PD patients had a cognitive assessment, structural MRI and blood draw. ML was performed on 102 input features including demographics, cortical thickness and subcortical measures, and several genetic variants (APOE, MAPT, SNCA, etc.). Using the combination of RRELIEFF and Support Vector Regression, 11 features were found to be predictive of GC including sex, rs894280, Edinburgh Handedness Inventory, UPDRS-III, education, five cortical thickness measures (R-parahippocampal, L-entorhinal, R-rostral anterior cingulate, L-middle temporal, and R-transverse temporal), and R-caudate volume. The rs894280 of SNCA gene was selected as the most novel finding of ML. Post-hoc analysis revealed a robust association between rs894280 and GC, attention, and visuospatial abilities. This variant indicates a potential role for the SNCA gene in cognitive impairments of idiopathic PD.

Indexed as

Machine LearningAgedAged, 80 and overalpha-SynucleinCognition DisordersCognitive DysfunctionDisease ProgressionFemaleHumansMaleMiddle AgedNeuroimagingParkinson Diseasealpha-SynucleinSNCA protein, human

Identifiers

PMID33649398
PMCPMC7921412
OpenAlexW3133637277

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.