There are at least 37 genes that have been implicated in CMT pathology; some of the genes are listed (CMT1: PMP22, MPZ; CMT2: KIF1B, MFN2, LMNA, GDAP1; Intermediate Form: DNM2, GNB4; CMT4: MTMR2, SFF2, EGR2; CMTX: GJB1). The gene discussed is GJB1; the disease is Charcot-Marie-Tooth disease.