Evidence map›Paper›PMID 21822932›Full record

ArticleJournal of neurology2012

A retrospective clinical study of the treatment of slow-channel congenital myasthenic syndrome.

Amina Chaouch, Juliane S Müller, Velina Guergueltcheva, Marina Dusl, Ulrike Schara, Vidosava Rakocević-Stojanović, Christopher Lindberg, Rosana H Scola, Lineu C Werneck, Jaume Colomer and 6 more

Abstract read
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In one paragraph

Article in Journal of neurology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 2 pooled it
2.1field-weighted citation impact, top 13% 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, 2 syntheses or guidelines pooled it, 73 citations in OpenAlex.

  1. Pooled it
  2. Congenital myasthenic syndromes.Orphanet journal of rare diseases · 2019
    Pooled it
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  19. Slow-channel myasthenia due to novel mutation in M2 domain of AChR delta subunit.Annals of clinical and translational neurology · 2019
    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

16 authors at 11 institutions in 8 countries.

Amina ChaouchInstitute of Genetic Medicine, Newcastle University, NE1 3BZ, Newcastle upon Tyne, UK.
Juliane S Müller
Velina Guergueltcheva
Marina Dusl
Ulrike Schara
Vidosava Rakocević-Stojanović
Christopher Lindberg
Rosana H Scola
Lineu C Werneck
Jaume Colomer
Andres Nascimento
Juan J Vilchez
Nuria Muelas
Zohar Argov
Angela Abicht
Hanns Lochmüller
Newcastle University · GBHospital de Clínicas Universidade Federal do Paraná · BRHospital Sant Joan de Déu Barcelona · ESAlexandrovska Hospital · BGBiomedical Research Networking Center on Neurodegenerative Diseases · ESFriedrich Baur Stiftung · DEHadassah Academic College · ILHospital Universitari i Politècnic La Fe · ESLudwig-Maximilians-Universität München · DESahlgrenska University Hospital · SEUniversity of Belgrade · RS

Funding

Medical Research Council G1002274
6 · The paper itself

Abstract

Slow-channel congenital myasthenic syndrome (CMS) is a rare subtype of CMS caused by dominant "gain of function" mutations in the acetylcholine receptor. Clinically, the cervical and forearm extensor muscles seem to be preferentially weaker; and conventional treatment with anticholinesterases fails to improve symptoms. In contrast, open channel blockers such as fluoxetine and quinidine have been shown to be of benefit. The objectives of our study were to provide further insight into the clinical features of slow-channel CMS and evaluate response to recommended therapy. We carried out a retrospective clinical follow up study of 15 slow-channel CMS patients referred to the Munich CMS Centre. Detailed clinical data were collected by clinicians involved in the care of each patient, with a particular focus on response and tolerability to recommended therapy. Patients varied widely as regard onset of symptoms, severity of disease and mutations involved. Patients received up to four different medications and some had none. Our results strengthen previous reported findings in terms of clinical phenotype variability and the poor response to pyridostigmine. Although treatment with fluoxetine was beneficial in most patients, a number of our patients suffered significant adverse effects that hindered optimum dose titration or led to treatment cessation. Slow-channel CMS is rare and exhibits distinct clinical and genetic characteristics. Our study suggests that fluoxetine, despite being effective in most patients, can be associated with significant side effects, thus reducing treatment effectiveness in clinical practice.

Indexed as

AdolescentAdultAgedCholinesterase InhibitorsFemaleFluoxetineFollow-Up StudiesHumansMaleMiddle AgedMyasthenic Syndromes, CongenitalPyridostigmine BromideRetrospective StudiesSelective Serotonin Reuptake InhibitorsTreatment OutcomeYoung AdultCholinesterase InhibitorsFluoxetinePyridostigmine BromideSelective Serotonin Reuptake Inhibitors

Identifiers

PMID21822932
OpenAlexW2128489047

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.