Evidence map›Paper›PMID 28195350›Full record

ReviewMovement disorders : official journal of the Movement Disorder Society2017

Overcoming the divide between ataxias and spastic paraplegias: Shared phenotypes, genes, and pathways.

Matthis Synofzik, Rebecca Schüle

Open access · greenAbstract readReview
In one paragraph

Review in Movement disorders : official journal of the Movement Disorder Society, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed, 5 pooled it
7.9field-weighted citation impact, top 1% 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

106 citing papers in PubMed, 5 syntheses or guidelines pooled it, 182 citations in OpenAlex.

  1. Pooled it
  2. Movement disorders in hereditary spastic paraplegia (HSP): a systematic review and individual participant data meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2023
    Pooled it
  3. Accidental Falls in Patients with Hyperkinetic Movement Disorders: A Systematic Review.Tremor and other hyperkinetic movements (New York, N.Y.) · 2022
    Pooled it
  4. Pooled it
  5. Frontiers in neuroscience · 2019
    Pooled it
  6. Review
  7. Article
  8. SPOAN Syndrome in Southern Brazil: Case Report and New Insights.Movement disorders clinical practice · 2026
    Article
  9. Review
  10. Article
  11. Article
  12. Cognitive impairment in hereditary spastic paraparesis: An overlooked aspect of a motor disorder.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  13. Article
  14. A Novel HomozygousNeurology. Genetics · 2025
    Article
  15. Article
  16. Review
  17. Observational
  18. Spastic Ataxia Composite (SPAXCOM): A Scale to Evaluate the Progression of Subjects with Spasticity and Ataxia.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  19. Review
  20. Review

46 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

2 authors at 1 institution in 1 country.

Matthis SynofzikDepartment of Neurodegeneration, Hertie Institute for Clinical Brain Research (HIH), University of Tübingen, Tübingen, Germany.
Rebecca SchüleDepartment of Neurodegeneration, Hertie Institute for Clinical Brain Research (HIH), University of Tübingen, Tübingen, Germany.
German Center for Neurodegenerative Diseases · DE

Funding

GENOME STUDIES IN HEREDITARY SPASTIC PARAPLEGIA - beyond the exomeR01NS072248 · NINDS · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI Stephan Zuchner · 2011 to 2026
$9.2M
NINDS NIH HHS R01 NS072248
6 · The paper itself

Abstract

Autosomal-dominant spinocerebellar ataxias, autosomal-recessive spinocerebellar ataxias, and hereditary spastic paraplegias have traditionally been designated in separate clinicogenetic disease classifications. This classification system still largely frames clinical thinking and genetic workup in clinical practice. Yet, with the advent of next-generation sequencing, phenotypically unbiased studies have revealed the limitations of this classification system. Various genes (eg, SPG7, SYNE1, PNPLA6) traditionally rooted in either the ataxia or hereditary spastic paraplegia classification system have now been shown to cause ataxia on the one end of the disease continuum and hereditary spastic paraplegia on the other. Other genes such as GBA2 and KIF1C were almost simultaneously published as both a hereditary spastic paraplegia and an ataxia gene. The variability and fluidity of observed phenotypes along the ataxia-spasticity spectrum warrants a rethinking of the traditional classification system. We propose to replace this divisive diagnosis-driven ataxia and hereditary spastic paraplegia classification system by a descriptive, unbiased approach of modular phenotyping. This approach is also open to expansion of the phenotype beyond ataxia and spasticity, which often occur as part of broader multisystem neuronal dysfunction. The concept of a continuous ataxia-spasticity disease spectrum is further supported by ataxias and hereditary spastic paraplegias sharing not only overlapping phenotypes and underlying genes, but also common cellular pathways and disease mechanisms. This suggests a shared vulnerability of cerebellar and corticospinal neurons for common pathophysiological processes. It might be this mechanistic overlap that drives their clinical overlap. A mechanistically inspired classification system will help to pave the way for mechanism-based strategies for drug development. © 2017 International Parkinson and Movement Disorder Society.

Indexed as

HumansSpastic Paraplegia, HereditarySpinocerebellar Ataxiasclassificationgeneticshereditary spastic paraplegiamolecularpathwayrecessive ataxiaspinocerebellar ataxia

Identifiers

PMID28195350
PMCPMC6287914
OpenAlexW2588585948

What OpenQuestion holds

Textmetadata
LicenceTDM
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.