CD40LG and chronic inflammatory demyelinating polyradiculoneuropathy: Considering that CIDP-specific autoantibodies are not detected in the majority of CIDP patients we developed this study to: (1) systematically screen for immunoglobulin G (IgG) and immunoglobulin M (IgM) autoantibodies against previously described antigens and peripheral nerve components, (2) identify the molecular targets of the immune response in those patients reacting against peripheral nerve components in which the target antigens were unknown and (3) to establish clinical-immunological correlations.