Charcot-Marie-Tooth disease type 4B1
MONDO:0011066Charcot-Marie-Tooth disease type 4B1 (CMT4B1) is a subtype of Charcot-Marie-Tooth disease type 4 characterized by an early childhood-onset of severe, demyelinating sensorimotor neuropathy, various degrees of complex myelin outfoldings seen on peripheral nerve biopsy, very slow, and often undetectable, nerve conduction velocities, and the typical CMT phenotype (i.e. distal muscle weakness and atrophy, sensory loss, and frequent pes cavus). Other reported features include facial weakness, vocal cord paresis, respiratory difficulties, and skeletal deformities (e.g. chest deformities, claw hands, pes equinovarus).
Also known as: CMT4B1, Charcot-Marie-Tooth disease type 4 caused by mutation in MTMR2, Charcot-Marie-Tooth disease type 4B1, MTMR2 Charcot-Marie-Tooth disease type 4, CMT 4B, CMT 4B1, Charcot Marie Tooth disease type 4B1, Charcot-Marie-Tooth disease, autosomal recessive, with focally folded myelin sheaths, autosomal recessive, type 4B1
10 clinical trials for this condition and its sub-types, 2 tagged with Charcot-Marie-Tooth disease type 4B1 itself.
Follow this condition to get notified about new trialsWhere it sits in the disease tree
Browse by category →-
Global registry aims to map the full course of Charcot-Marie-Tooth disease
Knowledge-focused Recruiting nowResearchers are building a global registry to collect patient-reported surveys, genetic test results, and medical records from people with Charcot-Marie-Tooth disease and related inherited neuropathies. The study is open to children and adults with a confirmed or suspected diagno…
Sponsor: Hereditary Neuropathy Foundation • Aim: Knowledge-focused
Last updated Sep 19, 2026 00:00 UTC
-
New study aims to unravel nerve mysteries in rare diseases
Knowledge-focused Recruiting nowThis study looks at how nerves work in people with Charcot-Marie-Tooth disease and other nerve disorders like CIDP. Researchers will use special electrical tests and ultrasound to measure nerve and muscle changes. The goal is to better understand these conditions, not to test a n…
Sponsor: Fondazione I.R.C.C.S. Istituto Neurologico Carlo Besta • Aim: Knowledge-focused
Last updated Jun 27, 2026 11:00 UTC