Charcot-Marie-Tooth disease type 1E
Synonyms: CMT1E | Charcot-Marie-Tooth disease-deafness syndrome | Charcot-Marie-Tooth disease-hearing loss syndrome
A rare subtype of CMT1 characterized by a variable clinical presentation. Onset within the first two years of life with a delay in walking is not uncommon; however onset may occur later. CMT1E is caused by point mutations in the PMP22 (17p12) gene. The disease severity depends on the particular PMP22 mutation with some cases being very mild and even resembling hereditary neuropathy with liability to pressure palsies while others having an earlier onset with a more severe phenotype (reminiscent of Dejerine-Sottas syndrome) than that seen in CMT1A caused by gene duplication. These severe cases may also report deafness and much slower motor nerve conduction velocities compared to CMT1A patients.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview.
Reference: Access aggregated data from Orphanet at Orphadata.
Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version April 2024
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Charcot-Marie-Tooth disease type 1E?
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Advocacy Organizations
Charcot-Marie-Tooth Association
To develop drugs to treat or cure CMT and to help improve the quality of life for those living with CMT.
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