PMID- 25305004 OWN - NLM STAT- MEDLINE DCOM- 20150724 LR - 20220129 IS - 1432-1459 (Electronic) IS - 0340-5354 (Linking) VI - 261 IP - 11 DP - 2014 Nov TI - Inherited disorders of the neuromuscular junction: an update. PG - 2234-43 LID - 10.1007/s00415-014-7520-7 [doi] AB - Congenital myasthenic syndromes (CMSs) are a group of heterogeneous inherited disorders caused by mutations in genes affecting the function and structure of the neuromuscular junction. This review updates the reader on established and novel subtypes of congenital myasthenia, and the treatment strategies for these increasingly heterogeneous disorders. The discovery of mutations associated with the N-glycosylation pathway and in the family of serine peptidases has shown that causative genes encoding ubiquitously expressed molecules can produce defects at the human neuromuscular junction. By contrast, mutations in lipoprotein-like receptor 4 (LRP4), a long-time candidate gene for congenital myasthenia, and a novel phenotype of myasthenia with distal weakness and atrophy due to mutations in AGRN have now been described. In addition, a pathogenic splicing mutation in a nonfunctional exon of CHRNA1 has been reported emphasizing the importance of analysing nonfunctional exons in genetic analysis. The benefit of salbutamol and ephedrine alone or combined with pyridostigmine or 3,4-DAP is increasingly being reported for particular subtypes of CMS. FAU - Rodriguez Cruz, Pedro M AU - Rodriguez Cruz PM AD - Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK. FAU - Palace, Jacqueline AU - Palace J FAU - Beeson, David AU - Beeson D LA - eng GR - 084655/Wellcome Trust/United Kingdom GR - MR/M006824/1/MRC_/Medical Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20141011 PL - Germany TA - J Neurol JT - Journal of neurology JID - 0423161 SB - IM MH - Genetic Testing/trends MH - Humans MH - Mutation/genetics MH - Myasthenic Syndromes, Congenital/*diagnosis/*genetics MH - Neuromuscular Junction/*genetics/*pathology EDAT- 2014/10/12 06:00 MHDA- 2015/07/25 06:00 CRDT- 2014/10/12 06:00 PHST- 2014/09/23 00:00 [received] PHST- 2014/09/23 00:00 [accepted] PHST- 2014/10/12 06:00 [entrez] PHST- 2014/10/12 06:00 [pubmed] PHST- 2015/07/25 06:00 [medline] AID - 10.1007/s00415-014-7520-7 [doi] PST - ppublish SO - J Neurol. 2014 Nov;261(11):2234-43. doi: 10.1007/s00415-014-7520-7. Epub 2014 Oct 11.