Evidence map›Paper›PMID 21611149›Full record

ArticlePloS one2011

A novel splice variant in the N-propeptide of COL5A1 causes an EDS phenotype with severe kyphoscoliosis and eye involvement.

Sofie Symoens, Fransiska Malfait, Philip Vlummens, Trinh Hermanns-Lê, Delfien Syx, Anne De Paepe

Open access · goldAbstract readCase Reports
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 11% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 45 citations in OpenAlex.

  1. Vascular phenotypes in nonvascular subtypes of the Ehlers-Danlos syndrome: a systematic review.Genetics in medicine : official journal of the American College of Medical Genetics · 2018
    Pooled it
  2. Next-Generation Sequencing and Variant Analysis of Fibrillar (Pro)Collagens.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  3. Article
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  5. The Association of a Single Nucleotide Variant inMedicina (Kaunas, Lithuania) · 2024
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  6. Donor Splice Site Variant inMedicina (Kaunas, Lithuania) · 2022
    Article
  7. Article
  8. Journal of the American Heart Association · 2021
    Article
  9. Article
  10. Article
  11. Article
  12. New variants inPostepy dermatologii i alergologii · 2019
    Article
  13. Review
  14. Article
  15. Article
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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

6 authors at 3 institutions in 1 country.

Sofie SymoensCenter for Medical Genetics, University Hospital Ghent, Ghent, Belgium. Sofie.Symoens@UGent.be
Fransiska Malfait
Philip Vlummens
Trinh Hermanns-Lê
Delfien Syx
Anne De Paepe
Ghent University Hospital · BEGhent University · BEUniversity of Liège · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe Ehlers-Danlos Syndrome (EDS) is a heritable connective tissue disorder characterized by hyperextensible skin, joint hypermobility and soft tissue fragility. The classic subtype of EDS is caused by mutations in one of the type V collagen genes (COL5A1 and COL5A2). Most mutations affect the type V collagen helical domain and lead to a diminished or structurally abnormal type V collagen protein. Remarkably, only two mutations were reported to affect the extended, highly conserved N-propeptide domain, which plays an important role in the regulation of the heterotypic collagen fibril diameter. We identified a novel COL5A1 N-propeptide mutation, resulting in an unusual but severe classic EDS phenotype and a remarkable splicing outcome. METHODOLOGY/PRINCIPAL

findingsWe identified a novel COL5A1 N-propeptide acceptor-splice site mutation (IVS6-2A>G, NM_000093.3_c.925-2A>G) in a patient with cutaneous features of EDS, severe progressive scoliosis and eye involvement. Two mutant transcripts were identified, one with an exon 7 skip and one in which exon 7 and the upstream exon 6 are deleted. Both transcripts are expressed and secreted into the extracellular matrix, where they can participate in and perturb collagen fibrillogenesis, as illustrated by the presence of dermal collagen cauliflowers. Determination of the order of intron removal and computational analysis showed that simultaneous skipping of exons 6 and 7 is due to the combined effect of delayed splicing of intron 7, altered pre-mRNA secondary structure, low splice site strength and possibly disturbed binding of splicing factors. CONCLUSIONS/SIGNIFICANCE: We report a novel COL5A1 N-propeptide acceptor-splice site mutation in intron 6, which not only affects splicing of the adjacent exon 7, but also causes a splicing error of the upstream exon 6. Our findings add further insights into the COL5A1 splicing order and show for the first time that a single COL5A1 acceptor-splice site mutation can perturb splicing of the upstream exon.

Indexed as

AdolescentAlternative SplicingBase SequenceChildCollagen Type VEhlers-Danlos SyndromeEye AbnormalitiesFemaleHEK293 CellsHumansInfant, NewbornIntronsMolecular Sequence DataMutant ProteinsPeptidesPhenotypeCOL5A1 protein, humanCollagen Type VMutant ProteinsPeptides

Identifiers

PMID21611149
PMCPMC3096658
OpenAlexW1970361523

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.