CD4 and Guillain-Barre syndrome, familial: To further investigate the presence of autoreactive clonotypes in different body compartments, we used the GLIPH2 algorithm to study the TCRβ clonotype repertoires of nerve-infiltrating CD4+ T cells and PNS-myelin specific CD4+ T cells from the blood of the same patient (PT16), as well as of total CD4+ T cells from the CSF of patients with AIDP.