Evidence map›Paper›PMID 24183479›Full record

ArticleNeuromuscular disorders : NMD2014

Salbutamol-responsive limb-girdle congenital myasthenic syndrome due to a novel missense mutation and heteroallelic deletion in MUSK.

Constanze Gallenmüller, Wolfgang Müller-Felber, Marina Dusl, Rolf Stucka, Velina Guergueltcheva, Astrid Blaschek, Maja von der Hagen, Angela Huebner, Juliane S Müller, Hanns Lochmüller and 1 more

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In one paragraph

Article in Neuromuscular disorders : NMD, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
3.7field-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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 58 citations in OpenAlex.

  1. Pooled it
  2. Congenital myasthenic syndromes.Orphanet journal of rare diseases · 2019
    Pooled it
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  16. Congenital Myasthenic Syndromes: a Clinical and Treatment Approach.Current treatment options in neurology · 2018
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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

11 authors at 4 institutions in 3 countries.

Constanze GallenmüllerFriedrich-Baur-Institut, Ludwig Maximilians University, Munich, Germany.
Wolfgang Müller-FelberHaunersche Kinderklinik, Ludwig Maximilians University, Munich, Germany.
Marina DuslFriedrich-Baur-Institut, Ludwig Maximilians University, Munich, Germany.
Rolf StuckaFriedrich-Baur-Institut, Ludwig Maximilians University, Munich, Germany.
Velina GuergueltchevaFriedrich-Baur-Institut, Ludwig Maximilians University, Munich, Germany; Clinic of Neurology, University Hospital Alexandrovska, Sofia, Bulgaria.
Astrid BlaschekHaunersche Kinderklinik, Ludwig Maximilians University, Munich, Germany.
Maja von der HagenChildren's Hospital, Technical University Dresden, Germany.
Angela HuebnerChildren's Hospital, Technical University Dresden, Germany.
Juliane S MüllerInstitute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom.
Hanns LochmüllerInstitute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom.
Angela AbichtFriedrich-Baur-Institut, Ludwig Maximilians University, Munich, Germany; Medical Genetics Center, Munich, Germany. Electronic address: Angela.Abicht@med.uni-muenchen.de.
Ludwig-Maximilians-Universität München · DEFriedrich Baur Stiftung · DENewcastle University · GBTU Dresden · DE

Funding

Medical Research Council G1002274Medical Research Council MR/K000608/1
6 · The paper itself

Abstract

Congenital myasthenic syndromes (CMS) are clinically and genetically heterogeneous disorders characterized by a neuromuscular transmission defect. In recent years, causative mutations have been identified in atleast 15 genes encoding proteins of the neuromuscular junction. Mutations in MUSK are known as a very rare genetic cause of CMS and have been described in only three families, world-wide. Consequently, the knowledge about efficient drug therapy is very limited. We identified a novel missense mutation (p.Asp38Glu) heteroallelic to a genomic deletion affecting exons 2-3 of MUSK as cause of a limb-girdle CMS in two brothers of Turkish origin. Clinical symptoms included fatigable limb weakness from early childhood on. Upon diagnosis of a MUSK-related CMS at the age of 16 and 13years, respectively, treatment with salbutamol was initiated leading to an impressive improvement of clinical symptoms, while treatment with esterase inhibitors did not show any benefit. Our findings highlight the importance of a molecular diagnosis in CMS and demonstrate considerable similarities between patients with MUSK and DOK7-related CMS in terms of clinical phenotype and treatment options.

Indexed as

Mutation, MissenseAlbuterolAllelesHumansMaleMyasthenic Syndromes, CongenitalReceptor Protein-Tyrosine KinasesReceptors, CholinergicSequence DeletionSiblingsAlbuterolMUSK protein, humanReceptor Protein-Tyrosine KinasesReceptors, Cholinergicacetylcholine esteraseacetylcholine receptorAChEAChRCKCMAPCMScompound muscle action potentialcongenital myasthenic syndromeCongenital myasthenic syndromescreatine kinaseMUSK-related CMSNeuromuscular transmissionSalbutamol treatment

Identifiers

PMID24183479
PMCPMC4018985
OpenAlexW2004800631

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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.