Charcot-Marie-Tooth disease type 1E

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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: // Data version October 2023.

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Advocacy Organizations

Hereditary Neuropathy Foundation

Hereditary Neuropathy Foundation (HNF) is a non-profit 501(c)3 organization which mission is to increase awareness and accurate diagnosis of Charcot-Marie-Tooth (CMT) and related inherited neuropathies, support patients and families with critical information to improve quality of life, and fund research that will lead to treatments and cures.

Clinical Trials

For a list of clinical trials in this disease area, please click here.