Evidence map›Paper›PMID 33163565›Full record

ArticleMovement disorders clinical practice2020

Channelopathies Are a Frequent Cause of Genetic Ataxias Associated with Cerebellar Atrophy.

Laurence Gauquelin, Taila Hartley, Mark Tarnopolsky, David A Dyment, Bernard Brais, Michael T Geraghty, Martine Tétreault, Sohnee Ahmed, Samantha Rojas, Karine Choquet and 7 more

Open access · bronzeAbstract read
In one paragraph

Article in Movement disorders clinical practice, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 35% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Cold Spring Harbor molecular case studies · 2023
    Article
  5. Article
  6. Article
  7. Review
  8. NGS in Hereditary Ataxia: When Rare Becomes Frequent.International journal of molecular sciences · 2021
    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

17 authors at 11 institutions in 1 country.

Laurence GauquelinDivision of Clinical and Metabolic Genetics, Department of Paediatrics The Hospital for Sick Children, University of Toronto Toronto Ontario Canada.
Taila HartleyChildren's Hospital of Eastern Ontario Research Institute University of Ottawa Ottawa Ontario Canada.
Mark TarnopolskyDepartment of Paediatrics McMaster University Medical Centre Hamilton Ontario Canada.
David A DymentChildren's Hospital of Eastern Ontario Research Institute University of Ottawa Ottawa Ontario Canada.
Bernard BraisDepartment of Neurology and Neurosurgery McGill University, Montreal Neurological Institute Montreal Qubec Canada.
Michael T GeraghtyChildren's Hospital of Eastern Ontario Research Institute University of Ottawa Ottawa Ontario Canada.
Martine TétreaultDepartment of Human Genetics McGill University Montreal Qubec Canada.
Sohnee AhmedDivision of Clinical and Metabolic Genetics, Department of Paediatrics The Hospital for Sick Children, University of Toronto Toronto Ontario Canada.
Samantha RojasChildren's Hospital of Eastern Ontario Research Institute University of Ottawa Ottawa Ontario Canada.
Karine ChoquetDepartment of Neurology and Neurosurgery McGill University, Montreal Neurological Institute Montreal Qubec Canada.
Jacek MajewskiDepartment of Human Genetics McGill University Montreal Qubec Canada.
François BernierDepartment of Medical Genetics University of Calgary Calgary Alberta Canada.
Allan Micheil InnesDepartment of Medical Genetics University of Calgary Calgary Alberta Canada.
Guy RouleauDepartment of Neurology and Neurosurgery McGill University, Montreal Neurological Institute Montreal Qubec Canada.
Oksana SuchowerskyDepartment of Medicine Division of Neurology, University of Alberta Edmonton Alberta Canada.
Kym M BoycottChildren's Hospital of Eastern Ontario Research Institute University of Ottawa Ottawa Ontario Canada.
Grace YoonDivision of Clinical and Metabolic Genetics, Department of Paediatrics The Hospital for Sick Children, University of Toronto Toronto Ontario Canada.
Children's Hospital of Eastern Ontario · CAMcGill University · CAUniversity of Calgary · CAHospital for Sick Children · CAMcMaster University Medical Centre · CAMontreal Neurological Institute and Hospital · CASickKids Foundation · CAUniversité de Montréal · CAUniversity of Alberta · CAUniversity of Ottawa · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCerebellar atrophy is a nonspecific imaging finding observed in a number of neurological disorders. Genetic ataxias associated with cerebellar atrophy are a heterogeneous group of conditions, rendering the approach to diagnosis challenging.

objectivesTo define the spectrum of genetic ataxias associated with cerebellar atrophy in a Canadian cohort and the diagnostic yield of exome sequencing for this group of conditions.

methodsA total of 92 participants from 66 families with cerebellar atrophy were recruited for this multicenter prospective cohort study. Exome sequencing was performed for all participants between 2011 and 2017 as part of 1 of 2 national research programs, Finding of Rare Genetic Disease Genes or Enhanced Care for Rare Genetic Diseases in Canada.

resultsA genetic diagnosis was established in 53% of families (35/66). Pathogenic variants were found in 21 known genes, providing a diagnosis for 31/35 families (89%), and in 4 novel genes, accounting for 4/35 families (11%). Of the families, 31/66 (47%) remained without a genetic diagnosis. The most common diagnoses were channelopathies, which were established in 9/35 families (26%). Additional clinical findings provided useful clues to specific diagnoses.

conclusionsWe report on the high frequency of channelopathies as a cause of genetic ataxias associated with cerebellar atrophy and the utility of exome sequencing for this group of conditions.

Indexed as

ataxia, cerebellar atrophy, channelopathies, exome sequencing

Identifiers

PMID33163565
PMCPMC7604675
OpenAlexW3082500506

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.