Paraneoplastic neurological disorders (PND) are due to immune-mediated damage of the nervous system, and the immune response is believed to be triggered as anti-tumor immunity. Early recognition of PND facilitates prompt detection of underlying tumors. Detection of paraneoplastic neuronal autoantibodies facilitates early diagnosis of PND. A novel paraneoplastic neuronal antibody, anti-neuronal nuclear antibody type 3 (ANNA-3) was identified in eleven patients, the majority had SCLC and diverse neurological manifestations. Autoimmune myasthenia gravis (MG) is due to impaired neuromuscular...