Evidence map›Paper›PMID 8808598›Full record

ArticleAmerican journal of human genetics1996

Apparent gene conversions involving the SMN gene in the region of the spinal muscular atrophy locus on chromosome 5.

G van der Steege, P M Grootscholten, J M Cobben, S Zappata, H Scheffer, J T den Dunnen, G J van Ommen, C Brahe, C H Buys

Open access · greenAbstract read
In one paragraph

Article in American journal of human genetics, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
9.4field-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

25 citing papers in PubMed, 93 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Spinal muscular atrophy.Nature reviews. Disease primers · 2022
    Review
  6. Genomic Variability in the Survival Motor Neuron Genes (International journal of molecular sciences · 2021
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
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  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

9 authors at 1 institution in 1 country.

G van der SteegeDepartment of Medical Genetics, University of Groningen, The Netherlands.
P M Grootscholten
J M Cobben
S Zappata
H Scheffer
J T den Dunnen
G J van Ommen
C Brahe
C H Buys
University of Groningen · NL

Funding

Telethon 517
6 · The paper itself

Abstract

The survival motor neuron (SMN) gene has been described as a determining gene for spinal muscular atrophy (SMA). SMN has a closely flanking, nearly identical copy (cBCD541). Gene and copy gene can be discriminated by sequence differences in exons 7 and 8. The large majority of SMA patients show homozygous deletions of at least exons 7 and 8 of the SMN gene. A minority of patients show absence of SMN exon 7 but retention of exon 8. This is explained by results of our present analysis of 13 such patients providing evidence for apparent gene-conversion events between SMN and the centromeric copy gene. Instead of applying a separate analysis for absence or presence of SMN exons 7 and 8, we used a contiguous PCR from intron 6 to exon 8. In every case we found a chimeric gene with a fusion of exon 7 of the copy gene and exon 8 of SMN and absence of a normal SMN gene. Similar events, including the fusion counterpart, were observed in a group of controls, although in the presence of a normal SMN gene. Chimeric genes as the result of fusions of parts of SMN and cBCD541 apparently are far from rare and may partly explain the frequently observed SMN deletions in SMA patients.

Indexed as

Chromosomes, Human, Pair 5Gene ConversionCyclic AMP Response Element-Binding ProteinElectrophoresis, Agar GelExonsHumansIntronsMuscular Atrophy, SpinalNerve Tissue ProteinsPolymerase Chain ReactionRestriction MappingRNA-Binding ProteinsSMN Complex ProteinsCyclic AMP Response Element-Binding ProteinNerve Tissue ProteinsRNA-Binding ProteinsSMN Complex Proteins

Identifiers

PMID8808598
PMCPMC1914786
OpenAlexW2132311925

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.