Only two studies reported the presence of Netrin‐1 receptor autoantibodies, more frequently against DCC than UNC5A, and almost invariably coexisting with CASPR2 antibodies in patients with thymoma‐associated Morvan syndrome 21 or comorbid for thymoma‐associated MG and NMT 13. The gene discussed is CNTNAP2; the disease is myasthenia gravis.