C harcot-Marie-Tooth (CMT) disease is a category of hereditary neuropathy. Rather than 1 disease, CMT is a syndrome of several clinically and genetically distinct disorders (Table and for updated listings: http//www. molgen.ua.ac.be/CMTMutations/Mutations/MutByGene. cfm). 1 The various subtypes of CMT have been traditionally classified according to the nerve conduction velocities and predominan...