Evidence map›Paper›PMID 11410838›Full record

ArticleAmerican journal of human genetics2001

Somatic mosaicism in hemophilia A: a fairly common event.

M Leuer, J Oldenburg, J M Lavergne, M Ludwig, A Fregin, A Eigel, R Ljung, A Goodeve, I Peake, K Olek

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In one paragraph

Article in American journal of human genetics, 2001. 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
3.3field-weighted citation impact, top 7% 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, 148 citations in OpenAlex.

  1. Non-Inversion Variants in Sporadic Hemophilia A Rarely Recur.International journal of molecular sciences · 2026
    Article
  2. Review
  3. Article
  4. Article
  5. Review
  6. Case Report: Novel pathogenic variant inFrontiers in genetics · 2022
    Article
  7. Haemophilia.Nature reviews. Disease primers · 2021
    Review
  8. Women with Hemophilia: Case Series of Reproductive Choices and Review of Literature.TH open : companion journal to thrombosis and haemostasis · 2021
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
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  18. Review
  19. 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

10 authors at 6 institutions in 4 countries.

M LeuerDepartment of Clinical Biochemistry, University of Bonn, Sigmund-Freud-Strasse 25, 53105 Bonn, Germany.
J Oldenburg
J M Lavergne
M Ludwig
A Fregin
A Eigel
R Ljung
A Goodeve
I Peake
K Olek
University of Bonn · DERoyal Hallamshire Hospital · GBInserm · FRLund University · SEUniversity of Münster · DEUniversity of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mutations in the large gene of clotting factor VIII (FVIII) are the most common events leading to severe human bleeding disorder. The high proportion of de novo mutations observed in this gene raises the possibility that a significant proportion of such mutations does not derive from a single germ cell but instead should be attributed to a germline or somatic mosaic originating from a mutation during early embryogenesis. The present study explores this hypothesis by using allele-specific PCR to analyze 61 families that included members who had sporadic severe hemophilia A and known FVIII gene defects. The presence of somatic mosaicisms of varying degrees (0.2%-25%) could be shown in 8 (13%) of the 61 families and has been confirmed by a mutation-enrichment procedure. All mosaics were found in families with point mutations (8 [25%] of 32 families). In the subgroup of 8 families with CpG transitions, the percentage with mosaicism increased to 50% (4 of 8 families). In contrast, no mosaics were observed in 13 families with small deletions/insertions or in 16 families with intron 22 inversions. Our data suggest that mosaicism may represent a fairly common event in hemophilia A. As a consequence, risk assessment in genetic counseling should include consideration of the possibility of somatic mosaicism in families with apparently de novo mutations, especially families with the subtype of point mutations.

Indexed as

AllelesAnimalsBase SequenceChromosome InversionDNA Mutational AnalysisEmbryo, MammalianExonsFactor VIIIFemaleGene FrequencyGenetic CounselingGenetic Predisposition to DiseaseGenetic TestingHemophilia AHumansIntronsFactor VIII

Identifiers

PMID11410838
PMCPMC1226050
OpenAlexW2085745830

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.