Moreover, the 17p12 recurrent (HNPP/CMT1A) region (including PMP22) has been attributed to hereditary neuropathy with liability to pressure palsies (HNPP) caused by the del (17) (p12p12) and CMT1A caused by the dup(17) (p12p12). This evidence concerns the gene PMP22 and hereditary neuropathy with liability to pressure palsies.