Evidence map›Paper›PMID 20682747›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2010

MTM1 mutation associated with X-linked myotubular myopathy in Labrador Retrievers.

Alan H Beggs, Johann Böhm, Elizabeth Snead, Marek Kozlowski, Marie Maurer, Katie Minor, Martin K Childers, Susan M Taylor, Christophe Hitte, James R Mickelson and 6 more

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01840657 (Prospective Study of Adverse Event Rates in Males With X-Linked Myotubular Myopathy), which is not on this map. Cited by 72 papers.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed
4.5field-weighted citation impact, top 5% 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.

NCT01840657 completednot on this mapstarted 2013, after this paper: background citation

Prospective Study of Adverse Event Rates in Males With X-Linked Myotubular Myopathy

TypeobservationalSponsorCure CMDRan2013 to 2015Enrolled33ConditionsX-linked Myotubular Myopathy
3 · Its place in the literature

Who cites it

72 citing papers in PubMed, 115 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. AnGenes · 2022
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Broader Implications of Progressive Liver Dysfunction and Lethal Sepsis in Two Boys following Systemic High-Dose AAV.Molecular therapy : the journal of the American Society of Gene Therapy · 2020
    Article
  17. Article
  18. Article
  19. AAV-Mediated Gene Transfer Restores a Normal Muscle Transcriptome in a Canine Model of X-Linked Myotubular Myopathy.Molecular therapy : the journal of the American Society of Gene Therapy · 2020
    Article
  20. Review

12 more citing papers are in PubMed but not listed here.

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

16 authors at 10 institutions in 3 countries.

Alan H BeggsDivision of Genetics and Program in Genomics, The Manton Center for Orphan Disease Research at Children's Hospital Boston and Harvard Medical School, Boston, MA 02115, USA. beggs@enders.tch.harvard.edu
Johann Böhm
Elizabeth Snead
Marek Kozlowski
Marie Maurer
Katie Minor
Martin K Childers
Susan M Taylor
Christophe Hitte
James R Mickelson
Ling T Guo
Andrew P Mizisin
Anna Buj-Bello
Laurent Tiret
Jocelyn Laporte
G Diane Shelton
University of California, San Diego · USÉcole Nationale Vétérinaire d'Alfort · FRHarvard University · USUniversity of Minnesota · USUniversity of Saskatchewan · CACollège de France · FRGenethon (France) · FRInserm · FRUniversité de Rennes · FRWake Forest University · US

Funding

Progenitor Cells inHuman Skeletal MuscleP50NS040828 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI KUNKEL, LOUIS M · 2008 to 2011
$5.9M
SARCOMERIC PROTEINS IN NORMAL AND DISEASED MUSCLER01AR044345 · NIAMS · CHILDREN'S HOSPITAL BOSTON · PI BEGGS, ALAN H. · 1997 to 2017
$5.3M
NIAMS NIH HHS R01 AR044345NINDS NIH HHS P50 NS040828
6 · The paper itself

Abstract

Mutations in the MTM1 gene encoding myotubularin cause X-linked myotubular myopathy (XLMTM), a well-defined subtype of human centronuclear myopathy. Seven male Labrador Retrievers, age 14-26 wk, were clinically evaluated for generalized weakness and muscle atrophy. Muscle biopsies showed variability in fiber size, centrally placed nuclei resembling fetal myotubes, and subsarcolemmal ringed and central dense areas highlighted with mitochondrial specific reactions. Ultrastructural studies confirmed the centrally located nuclei, abnormal perinuclear structure, and mitochondrial accumulations. Wild-type triads were infrequent, with most exhibiting an abnormal orientation of T tubules. MTM1 gene sequencing revealed a unique exon 7 variant in all seven affected males, causing a nonconservative missense change, p.N155K, which haplotype data suggest derives from a recent founder in the local population. Analysis of a worldwide panel of 237 unaffected Labrador Retrievers and 59 additional control dogs from 25 other breeds failed to identify this variant, supporting it as the pathogenic mutation. Myotubularin protein levels and localization were abnormal in muscles from affected dogs, and expression of GFP-MTM1 p.N155K in COS-1 cells showed that the mutant protein was sequestered in proteasomes, where it was presumably misfolded and prematurely degraded. These data demonstrate that XLMTM in Labrador Retrievers is a faithful genetic model of the human condition.

Indexed as

MutationAmino Acid SequenceAnimalsBase SequenceChlorocebus aethiopsCOS CellsDog DiseasesDogsFemaleFluorescent Antibody Technique, IndirectGenetic Diseases, X-LinkedGenotypeGreen Fluorescent ProteinsHaplotypesHumansMaleGreen Fluorescent ProteinsmyotubularinProtein Tyrosine Phosphatases, Non-Receptor

Identifiers

PMID20682747
PMCPMC2930454
OpenAlexW2098241317

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.