CNTNAP1 and chronic inflammatory demyelinating polyradiculoneuropathy: Autoantibodies against ganglioside antibodies, myelin protein (P0, PMP22), nodal proteins (NF155, CNTN1, CNTN1/CASPR1, CNTN2/CASPR2 complex, neuronal cell adhesion molecule (NCAM)), gliomedin and two subunits of sodium channel at nodes of Ranvier (NavB1, NavB2) have been investigated in CIDP patients.