Evidence map›Paper›PMID 33835738›Full record

ReviewJournal of clinical neurology (Seoul, Korea)2021

Clinical, Imaging, and Laboratory Markers of Premanifest Spinocerebellar Ataxia 1, 2, 3, and 6: A Systematic Review.

Dong Hoi Kim, Ryul Kim, Jee Young Lee, Kyoung Min Lee

Open access · diamondAbstract readReview
In one paragraph

Review in Journal of clinical neurology (Seoul, Korea), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% 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, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Visual evoked potential abnormalities in spinocerebellar ataxia type 27B: a case report.Documenta ophthalmologica. Advances in ophthalmology · 2026
    Article
  3. Article
  4. Article
  5. Biomarkers in Spinocerebellar Ataxias.Cerebellum (London, England) · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Genetic Ablation of Inositol 1,4,5-Trisphosphate Receptor Type 2 (IPInternational journal of molecular sciences · 2023
    Article
  13. Article
  14. Article
  15. 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

4 authors at 2 institutions in 1 country.

Dong Hoi Kim *Seoul National University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0002-3004-4958
Ryul Kim *Department of Neurology, Inha University Hospital, Incheon, Korea.ORCID https://orcid.org/0000-0002-8754-9180
Jee Young LeeSeoul National University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0002-9120-2075
Kyoung Min LeeSeoul National University College of Medicine, Seoul, Korea.ORCID https://orcid.org/0000-0002-3685-7642
Seoul National University · KRInha University Hospital · KR

Funding

National Research Foundation of Korea NRF-2018R1C1B3008971Seoul Metropolitan Government Seoul National University Boramae Medical Center 04-2020-8
6 · The paper itself

Abstract

background and purposePremanifest mutation carriers with spinocerebellar ataxia (SCA) can exhibit subtle abnormalities before developing ataxia. We summarized the preataxic manifestations of SCA1, -2, -3, and -6, and their associations with ataxia onset.

methodsWe included studies of the premanifest carriers of SCA published between January 1998 and December 2019 identified in Scopus and PubMed by searching for terms including 'spinocerebellar ataxia' and several synonyms of 'preataxic manifestation'. We systematically reviewed the results obtained in studies categorized based on clinical, imaging, and laboratory markers.

resultsWe finally performed a qualitative analysis of 48 papers. Common preataxic manifestations appearing in multiple SCA subtypes were muscle cramps, abnormal muscle reflexes, instability in gait and posture, lower Composite Cerebellar Functional Severity scores, abnormalities in video-oculography and transcranial magnetic stimulation, and gray-matter loss and volume reduction in the brainstem and cerebellar structures. Also, decreased sensory amplitudes in nerve conduction studies were observed in SCA2. Eotaxin and neurofilament light-chain levels were revealed as sensitive blood biomarkers in SCA3. Concerning potential predictive markers, hyporeflexia and abnormalities of somatosensory evoked potentials showed correlations with the time to ataxia onset in SCA2 carriers. However, no longitudinal data were found for the other SCA gene carriers.

conclusionsOur results suggest that preataxic manifestations vary among SCA1, -2, -3, and -6, with some subtypes sharing specific features. Combining various markers into a standardized index for premanifest carriers may be useful for early screening and assessing the risk of disease progression in SCA carriers.

Indexed as

markerpremanifestpresymptomaticspinocerebellar ataxiasystematic review

Identifiers

PMID33835738
PMCPMC8053554
OpenAlexW3151627883

What OpenQuestion holds

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LicenceCC BY-NC
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.