Associated genes Type Sub-type Gene Locus<unk>  1 1A SPTLC1 9q22.1-q22.3 1B unknown (OMIM 608088) 3p24–p22 1C(= CMT2B, HMSN IIB) RAB7A 3q21 1D unknown unknown 1E DNMT1 (OMIM 614116) 19p13.2<unk>  2 HSN2 12p13.33<unk>  3 (Familial dysautonomia) IKBKAP 9q31<unk>  4 (CIPA) NTRK1 1q21-q22 TRKA<unk>  5 NGFβ 1p13.1 NTRK1<unk>  6 DST<unk>  7 SCN11A<unk>  8 PRDM12 9q33.2-34.13
Hereditary sensory and autonomic neuropathy
Hereditary motor and sensory neuropathy
Chronic inflammatory demyelinating polyneuropathy
Peripheral mononeuropathy
Tropical neuropathy
Diabetic neuropathy
Polyneuropathy
Critical illness polyneuropathy