Evidence map›Paper›PMID 9012407›Full record

ArticleAmerican journal of human genetics1997

Identification of mutations in cystatin B, the gene responsible for the Unverricht-Lundborg type of progressive myoclonus epilepsy (EPM1).

M D Lalioti, M Mirotsou, C Buresi, M C Peitsch, C Rossier, R Ouazzani, M Baldy-Moulinier, A Bottani, A Malafosse, S E Antonarakis

Abstract read
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 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
7.0field-weighted citation impact, top 3% 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

34 citing papers in PubMed, 148 citations in OpenAlex.

  1. A CGG Repeat Expansion in CSNK1E Associated with Progressive Myoclonic Epilepsy with Incomplete Penetrance.Movement disorders : official journal of the Movement Disorder Society · 2025
    Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. Review
  19. Review
  20. 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

10 authors at 1 institution in 1 country.

M D LaliotiDepartment of Genetics and Microbiology, University of Geneva Medical School, Switzerland.
M Mirotsou
C Buresi
M C Peitsch
C Rossier
R Ouazzani
M Baldy-Moulinier
A Bottani
A Malafosse
S E Antonarakis
University of Geneva · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Progressive myoclonus epilepsy (EPM1) is an autosomal recessive disorder, characterized by severe, stimulus-sensitive myoclonus and tonic-clonic seizures. The EPM1 locus was mapped to within 0.3 cM from PFKL in chromosome 21q22.3. The gene for the proteinase inhibitor cystatin B was recently localized in the EPM1 critical region, and mutations were identified in two EPM1 families. We have identified six nucleotide changes in the cystatin B gene of non-Finnish EPM1 families from northern Africa and Europe. The 426G-->C change in exon 1 results in a Gly4Arg substitution and is the first missense mutation described that is associated with EPM1. Molecular modeling predicts that this substitution severely affects the contact of cystatin B with papain. Mutations in the invariant AG dinucleotides of the acceptor sites of introns 1 and 2 probably result in abnormal splicing. A deletion of two nucleotides in exon 3 produces a frameshift and truncates the protein. Therefore, these four mutations are all predicted to impair the production of functional protein. These mutations were found in 7 of the 29 unrelated EPM1 patients analyzed, in homozygosity in 1, and in heterozygosity in the others. The remaining two sequence changes, 431G-->T and 2575A-->G, probably represent polymorphic variants. In addition, a tandem repeat in the 5' UTR (CCCCGCCCCGCG) is present two or three times in normal alleles. It is peculiar that in the majority of patients no mutations exist within the exons and splice sites of the cystatin B gene.

Indexed as

MutationAmino Acid SequenceCystatin BCystatinsCysteine Proteinase InhibitorsDNA Mutational AnalysisEpilepsies, MyoclonicExonsFrameshift MutationHumansIntronsModels, MolecularMolecular Sequence DataPoint MutationPolymerase Chain ReactionPolymorphism, GeneticCSTB protein, humanCystatin BCystatinsCysteine Proteinase Inhibitors

Identifiers

PMID9012407
PMCPMC1712389
OpenAlexW1501844647

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.