HSPB1 and distal hereditary motor neuropathy type 2: Mutations in the heat‐shock protein beta 1 (HSPB1) gene, also known as HSP27, are associated with the overlapping conditions of distal hereditary motor neuropathy type 2 (dHMN2) and Charcot‐Marie‐Tooth disease type 2F (CMT2F).1, 2, 3, 4