Evidence map›Paper›PMID 9106530›Full record

ArticleAmerican journal of human genetics1997

The prevalence and wide clinical spectrum of the spinocerebellar ataxia type 2 trinucleotide repeat in patients with autosomal dominant cerebellar ataxia.

D H Geschwind, S Perlman, C P Figueroa, L J Treiman, S M Pulst

Abstract readComparative Study
In one paragraph

Article in American journal of human genetics, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 1 pooled it
6.4field-weighted citation impact, top 2% 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

70 citing papers in PubMed, 1 synthesis or guideline pooled it, 241 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Expanding the Genetic Landscape ofNeurology. Genetics · 2026
    Article
  5. Article
  6. Observational
  7. Article
  8. Review
  9. Review
  10. Review
  11. Tremor in Spinocerebellar Ataxia: A Scoping Review.Tremor and other hyperkinetic movements (New York, N.Y.) · 2024
    Article
  12. "Biomedicines · 2022
    Article
  13. Article
  14. Article
  15. RNA Toxicity and Perturbation of rRNA Processing in Spinocerebellar Ataxia Type 2.Movement disorders : official journal of the Movement Disorder Society · 2021
    Article
  16. Review
  17. Review
  18. Review
  19. Article
  20. Article

10 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

5 authors at 1 institution in 1 country.

D H GeschwindDepartment of Neurology, University of California, Los Angeles, School of Medicine, 90095-1769, USA. dhg@ucla.edu
S Perlman
C P Figueroa
L J Treiman
S M Pulst
University of California, Los Angeles · US

Funding

Spinocerebellar Ataxia Type 2 Gene and Gene ProductR37NS033123 · NINDS · UNIVERSITY OF UTAH · PI PULST, STEFAN M. · 2014 to 2020
$3.6M
SPINOCEREBELLAR ATAXIA TYPE 2--GENE AND GENE PRODUCTR01NS033123 · NINDS · UNIVERSITY OF UTAH · PI PULST, STEFAN M. · 1996 to 2012
$2.9M
Spinocerebellar Ataxia Type 2 Gene and Gene ProductR56NS033123 · NINDS · UNIVERSITY OF UTAH · PI PULST, STEFAN M. · 2013 to 2013
$473k
NINDS NIH HHS NS011849NINDS NIH HHS NS33123-012A
6 · The paper itself

Abstract

The dominant cerebellar ataxias (ADCAs) represent a clinically and genetically heterogeneous group of disorders linked by progressive deterioration in balance and coordination. The utility of genetic classification of the ADCAs has been highlighted by the striking variability in clinical phenotype observed within families and the overlap in clinical phenotype observed between those with different genotypes. The recent demonstration that spinocerebellar ataxia type 2 (SCA2) is caused by a CAG repeat expansion within the ataxin-2 gene has allowed us to determine the frequency of SCA2 compared with SCA1, SCA3/Machado-Joseph disease (MJD), and dentatorubropallidoluysian atrophy (DRPLA) in patients with sporadic and inherited ataxia. SCA2 accounts for 13% of patients with ADCA (without retinal degeneration), intermediate between SCA1 and SCA3/MJD, which account for 6% and 23%, respectively. Together, SCA1, SCA2, and SCA3/MJD constitute >40% of the mutations leading to ADCA I in our population. No patient without a family history of ataxia, or with a pure cerebellar or spastic syndrome, tested positive for SCA1, SCA2, or SCA3. No overlap in ataxin-2 allele size between normal and disease chromosomes, or intermediate-sized alleles, were observed. Repeat length correlated inversely with age at onset, accounting for approximately 80% of the variability in onset age. Haplotype analysis provided no evidence for a single founder chromosome, and diverse ethnic origins were observed among SCA2 kindreds. In addition, a wide spectrum of clinical phenotypes was observed among SCA2 patients, including typical mild dominant ataxia, the MJD phenotype with facial fasciculations and lid retraction, and early-onset ataxia with a rapid course, chorea, and dementia.

Indexed as

Trinucleotide RepeatsAdolescentAdultAge of OnsetAtaxin-1Ataxin-3AtaxinsAtrophyCerebellar AtaxiaDisease ProgressionFounder EffectGene FrequencyGenes, DominantHumansMachado-Joseph DiseaseMiddle AgedAtaxin-1Ataxin-3AtaxinsATXN1 protein, humanATXN3 protein, humanNerve Tissue ProteinsNuclear ProteinsProteinsRepressor Proteins

Identifiers

PMID9106530
PMCPMC1712476
OpenAlexW1560768124

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.