PMP22 and Guillain-Barre syndrome, familial: In total, 27 patients with inflammatory neuropathies were heterozygous for the AAGGG repeat: in the merged CIDP+ group 15 patients, in the MMN group 10 patients and in the AIDP group 2 patients with an allele frequency of 4.8%, 7.2% and 3.7%, respectively (Table 1).