Charcot–Marie–Tooth neuropathy type 4D (CMT4D; MIM #601455), also known as hereditary motor and sensory neuropathy-Lom (HMSNL) is caused by biallelic pathogenic mutations in the N-Myc Downstream Regulated 1 (NDRG1) gene located on chromosome 8q24.22 [1,2]. Here, NDRG1 is linked to Charcot-Marie-Tooth disease type 4D.