Mutations in GDAP1, a gene encoding the enzyme glutathione S-transferase (Cantarero et al., 2021), are associated with various CMT phenotypes, including autosomal dominant axonal CMT (CMT2K), autosomal recessive axonal CMT (AR-CMT2K), and autosomal recessive demyelinating CMT (CMT4A) (Gonzalez-Sanchez et al., 2019). This evidence concerns the gene HPGDS and autosomal dominant Charcot-Marie-Tooth disease type 2K.