The higher frequency of NF155+ CIDP in Asians (5, 27) than in Caucasians (28, 29, 36) may be responsible in part for the relatively higher frequency of blink reflex abnormalities in Japanese CIDP patients (35) compared with Caucasian CIDP patients (33, 34). Here, PMP22 is linked to chronic inflammatory demyelinating polyradiculoneuropathy.