CNTN1 and chronic inflammatory demyelinating polyradiculoneuropathy: In the present study, we aimed to clarify the relationship between CIDP with MN and anti-CNTN1 antibody-positive CIDP by searching for autoantibodies to paranodal antigens and podocyte antigens in a patient with CIDP and MN, and by comparing the clinical features of CIDP with MN and anti-CNTN1 antibody-positive CIDP.