Evidence map›Paper›PMID 40974444›Full record

ArticleJournal of neurology2025

Delineating the pathogenic threshold and phenotypic spectrum of SCA27B: findings from a large French-Canadian cohort.

Pablo Iruzubieta, David Pellerin, Catherine Ashton, Felipe Villa, Mathilde Renaud, Marie-Josée Dicaire, Matt C Danzi, Mayra Aldecoa, Jean Mathieu, Rami Massie and 12 more

Abstract read
In one paragraph

Article in Journal of neurology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Clinical, Genetic, and Imaging Characteristics of SCA27B: Insights from a Large Dutch Cohort.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  7. In Vivo Expression of an SCA27A-LinkedThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    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

22 authors.

Pablo Iruzubieta *Department of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
David Pellerin *Department of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
Catherine Ashton *Department of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
Felipe VillaDepartment of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
Mathilde RenaudService de Génétique Clinique Et de Neurologie, Hôpital Brabois Enfants, Nancy, France.
Marie-Josée DicaireDepartment of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
Matt C DanziDr. John T. Macdonald Foundation Department of Human Genetics, John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA.
Mayra AldecoaDepartment of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
Jean MathieuFaculty of Medicine and Health Sciences, Sherbrooke University, Sherbrooke, QC, Canada.
Rami MassieDepartment of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
Colin H ChalkDepartment of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
Anne-Louise LafontaineDepartment of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
François EvoyFaculty of Medicine and Health Sciences, Sherbrooke University, Sherbrooke, QC, Canada.
Marie-France RiouxFaculty of Medicine and Health Sciences, Sherbrooke University, Sherbrooke, QC, Canada.
Jean-Denis BrissonFaculté de Médecine Et Des Sciences de La Santé, Université de Sherbrooke, 3001 12E Avenue Nord, Sherbrooke, QC, J1H 5N4, Canada.
Kym M BoycottChildren's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, ON, Canada.
Henry HouldenDepartment of Neuromuscular Disease, The National Hospital for Neurology and Neurosurgery, UCL Queen Square Institute of Neurology, University College London, London, UK.
Matthis SynofzikDepartment of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, Tübingen, Germany.
Roberta La PianaDepartment of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.
Stephan ZuchnerDr. John T. Macdonald Foundation Department of Human Genetics, John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA.
Antoine DuquetteDepartment of Neurosciences, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada.
Bernard BraisDepartment of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada. bernard.brais@mcgill.ca.

Funding

CIHR 189963European Rare Disease Research Alliance 101156595
6 · The paper itself

Abstract

backgroundAutosomal dominant spinocerebellar ataxia 27B (SCA27B), caused by an intronic (GAA•TTC) repeat expansion in FGF14, is a common cause of late-onset cerebellar ataxia, but its genotypic and phenotypic spectrum remains to be fully established.

methodsWe analysed the FGF14 (GAA•TTC) repeat expansion in a cohort of 134 patients with ataxia and 822 controls from Quebec. We conducted segregation study in large families to further characterize intergenerational repeat instability.

resultsWe found a significant enrichment of (GAA•TTC) DISCUSSION AND

conclusionThis large cohort demonstrates that (GAA•TTC)

Indexed as

Fibroblast Growth FactorsSpinocerebellar AtaxiasAdultAgedCanadaCohort StudiesFemaleFranceHumansMaleMiddle AgedPhenotypeQuebecTrinucleotide Repeat Expansionfibroblast growth factor 14Fibroblast Growth FactorsAtaxiaFGF14French–CanadianSCA27B

Identifiers

PMID40974444
PMCPMC12450228

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.