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- W4225331355 abstract "Abstract Charcot–Marie–Tooth's disease (CMT) represents the most common inherited neuropathy. Most patients are diagnosed during late stages of disease course during adulthood. We performed a review of clinical, neurophysiological, and genetic diagnoses of 32 patients with genetically defined childhood-onset demyelinating CMT under clinical follow-up in a Brazilian Center for Neuromuscular Diseases from January 2015 to December 2019. The current mean age was 33.1 ± 18.3 years (ranging from 7 to 71 years) and mean age at defined genetic diagnosis was 36.1 ± 18.3 years. The mean age at onset was 6.1 ± 4.4 years. The most common initial complaint was bilateral pes cavus. The genetic basis included PMP22 duplication (CMT1A) (n = 18), GJB1 (CMTX1) (n = 5), MPZ (CMT1B) (n = 3), FIG4 (CMT4J) (n = 3), SH3TC2 (CMT4C) (n = 1), PLEKHG5 (CMTRIC) (n = 1), and PRX (CMT4F) (n = 1). Almost all patients (n = 31) presented with moderate or severe compromise in the CMT neuropathy score 2 with the highest values observed in CMT1B. Medical history disclosed obstructive sleep apnea (n = 5), aseptic meningitis (n = 1/MPZ), akinetic-rigid parkinsonism (n = 1/FIG4), and overlapping chronic inflammatory demyelinating polyneuropathy (n = 1/MPZ). Motor conduction block was detected in three individuals (PMP22, FIG4, MPZ). Acute denervation occurred in seven patients. Nonuniform demyelinating patterns were seen in four individuals (two CMT1A, one CMT1B, and one CMTX1). Abnormal cerebral white matter findings were detected in CMT1A and CMTX1, while hypertrophic roots were seen in CMT1A, CMT1B, and CMTX1. Our study emphasizes a relative oligogenic basis in childhood-onset demyelinating CMT and atypical findings may be observed especially in MPZ, PMP22, and GJB1 gene variants." @default.
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- W4225331355 date "2022-05-02" @default.
- W4225331355 modified "2023-10-01" @default.
- W4225331355 title "Clinical and Genetic Aspects of Childhood-Onset Demyelinating Charcot–Marie–Tooth's Disease in Brazil" @default.
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- W4225331355 doi "https://doi.org/10.1055/s-0042-1747934" @default.
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