Eighteen pathogenic mutations in HSPB1 have been previously described in patients with a motor axonal neuropathy (collated in reference 1, original articles cited in the supplementary references), either in isolation as a distal hereditary motor neuropathy or as Charcot-Marie-Tooth 2F in the presence of clinical sensory neuron involvement. The gene discussed is HSPB1; the disease is Motor axonal neuropathy.