Charcot-Marie-Tooth disease type 4G (CMT4G) is a subtype of Charcot-Marie-Tooth disease type 4 characterized by early childhood onset of progressive distal muscle weakness and atrophy, delayed motor development, prominent distal sensory impairment, areflexia, moderately reduced nerve conduction velocities, and foot and hand deformities in Balkan (Russe) Gypsies. The disease is Charcot-Marie-Tooth disease type 4G (MONDO_0011534). Also known as: CMT4G, Charcot-Marie-Tooth disease type 4 caused by mutation in HK1, Charcot-Marie-Tooth neuropathy type 4G, HK1 Charcot-Marie-Tooth disease type 4, HMSNR, autosomal recessive Charcot-Marie-Tooth disease type 4G, hereditary motor and sensory neuropathy Russe type, hereditary motor and sensory neuropathy, Russe type.