Mutations in the human gene for Prx (PRX, MIM no. 605725) on chromosome 19q13.2 have been associated with autosomal recessive Charcot Marie Tooth disease type 4F (CMT4F, MIM no. 614895) and both autosomal dominant and recessive sub-forms of Dejerine-Sottas syndrome/neuropathy (DSS/DSN, MIM no. 145900). The gene discussed is PRX; the disease is Charcot-Marie-Tooth disease type 3.