← Gene index
PMP22
HGNC ↗1 article(s) in the watch · Constitutional genetics
PMP22 encodes a dosage-sensitive peripheral-myelin protein. Duplication causes Charcot-Marie-Tooth type 1A; deletion causes HNPP.
InheritanceAutosomal dominant
Clinical spectrumSensorimotor neuropathy (CMT1A), pressure-palsy neuropathy (HNPP)
ManagementRehabilitation, orthoses; avoid neurotoxic drugs; genetic counselling.