Evidence map›Paper›PMID 8014964›Full record

ArticleJournal of medical genetics1994

On the origin of deletions and point mutations in Duchenne muscular dystrophy: most deletions arise in oogenesis and most point mutations result from events in spermatogenesis.

T Grimm, G Meng, S Liechti-Gallati, T Bettecken, C R Müller, B Müller

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Article in Journal of medical genetics, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

37 citing papers in PubMed, 108 citations in OpenAlex.

  1. Review
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  8. Comparison of Carrier andFrontiers in neurology · 2021
    Article
  9. When the Lyon(ized chromosome) roars: ongoing expression from an inactive X chromosome.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017
    Review
  10. Article
  11. Article
  12. Review
  13. Article
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  16. Risk assessment and genetic counseling in families with Duchenne muscular dystrophy.Acta myologica : myopathies and cardiomyopathies : official journal of the Mediterranean Society of Myology · 2012
    Article
  17. Article
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  19. Review
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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 1 institution in 1 country.

T GrimmInstitut für Humangenetik der Universität Würzburg, Germany.
G Meng
S Liechti-Gallati
T Bettecken
C R Müller
B Müller
University of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We present the results of a study of the rate and origin of mutations in Duchenne muscular dystrophy (DMD). Depending on the type of mutation (deletion/duplication or point mutation) present in the patient, there are widely varying ratios of male to female mutation rates. In deletions, the male mutation rate is only 30% of the female one. In non-deletional/non-duplicational mutations (presumably containing a high proportion of point mutations) the male mutation rate is at least 2.2 as high as the female one and probably much higher. Allowing for the presence of autosomal recessive phenocopies we find that k in non-deletional/non-duplicational mutations is 40.3. These findings mean that the vast majority of deletions arise in oogenesis, while most point mutations stem from spermatogenesis. Previous investigations have shown that in other diseases and genes, most notably haemophilia B and A, but also the ZFY and ZFX genes, the male mutation rate for point mutations tends to be higher than the female one. Our results can be seen as a confirmation of this for the special case of DMD. The influence on risk figures is considerable. As an example, the risk of the mother of an isolated case of DMD without an apparent structural anomaly of the gene of being a carrier increases from 67% to at least 76%. Given the estimate of 40.3 for k, allowing for the presence of autosomal recessive phenocopies mentioned above, it increases even further to 98%. However, as confidence intervals are still large, more data are needed to improve the estimates. Germinal mosaicism in this context is discussed.

Indexed as

Gene DeletionPoint MutationFathersFemaleGenetic Carrier ScreeningHaplotypesHumansMaleModels, GeneticMosaicismMothersMultigene FamilyMuscular DystrophiesOogenesisPredictive Value of TestsReproducibility of Results

Identifiers

PMID8014964
PMCPMC1049738
OpenAlexW1984455464

What OpenQuestion holds

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Registered trials

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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.