Autoimmune hemolytic anemia as a paraneoplastic syndrome associated with solid tumors

Abstract Autoimmune hemolytic anemia (AIHA) is a rare paraneoplastic syndrome (PNS) associated with malignant solid tumors. Patients with PNS-AIHA are often refractory to steroid treatment before surgery. The mechanisms underlying PNS-AIHA are not well understood. In a recent case report describing a patient with PNS-AIHA, the antibodies had formed against the tumor antigens and cross-reacted with the erythrocyte antigen: band 3. Further study of this case may provide clues to finding novel mechanisms and targets for immunotherapy against AIHA and solid tumors.