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A Late-onset and Mild Form of Charcot-Marie-Tooth Disease Type 2 Caused by a Novel Splice-site Mutation Within the Mitofusin-2 Gene

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Journal Acta Myol
Date 2014 May 8
PMID 24803844
Citations 3
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Abstract

Charcot-Marie-Tooth type 2A disease (CMT2A) caused by mutations in the Mitofusin 2 gene (Mfn2) has been shown to be an early-onset axonal neuropathy with severe clinical course in the majority of the patients. In this study we present a unique phenotype of CMT2A disease characterized by late-onset polyneuropathy with a very mild clinical course. This rare form of CMT2A disease is caused by a new splice-site (c.311+1G>T) mutation within the MFN2 gene. Due to disturbance of the MFN2 splicing process, this mutation generates a short transcript which encodes a very short fragment of MFN2 protein. The c.311+1G>T mutation within the MFN2 gene results in the late -onset CMT2 disease.

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Full-length isoform sequencing for resolving the molecular basis of Charcot-Marie-Tooth 2A.

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