Congenital myasthenic syndrome
Other Names for this Disease
- Congenital Myasthenia
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 There are three main subtypes of CMS, which are defined by how they affect the connection between muscles and the nervous system: postsynaptic (75-80% of patients), synaptic (14-15% of patients), and presynaptic (7-8% of patients). Identification of the specific subtype is important in patient care for determining the most effective treatment. Mutations in many genes have been found to cause CMS, and most forms of CMS are inherited in an autosomal recessive pattern. One form of CMS, a postsynaptic form known as slow-channel syndrome congenital myasthenic syndrome is inherited in an autosomal dominant manner.Congenital myasthenic syndrome (CMS) is a group of genetic disorders that result in muscle weakness and fatigue. Symptoms can range from mild weakness to progressive disabling weakness.
Last updated: 7/10/2013
- Abicht A, Muller J, Lochmuller H. Congenital Myasthenic Syndromes. GeneReviews. June, 28 2012; http://www.ncbi.nlm.nih.gov/books/NBK1168/. Accessed 7/1/2013.
- Lorenzoni PJ, Scola RH, Kay CSK, Werneck LC. Congenital Myasthenic syndrome: A Brief Review. Pediatric Neurology. 2012; http://www.ncbi.nlm.nih.gov/pubmed/ 22353287. Accessed 7/1/2013.
- The MayoClinic.com Web site provides further information on this topic. Click on MayoClinic.com to view the information page.
- Genetics Home Reference (GHR) contains information on Congenital myasthenic syndrome. This website is maintained by the National Library of Medicine.
- Muscular Dystrophy Association has information and resources about Congenital myasthenic syndrome. Please click on the link to access this resource.
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