Dezamizumab (GSK 2398852) is a fully humanized recombinant monoclonal immunoglobulin G1 (IgG1) antibody specifically targeting the serum amyloid P component (SAP), a protein universally found in all types of amyloid deposits, and it possesses potential anti-amyloid activity by triggering an immunotherapeutic mechanism for the clearance of amyloid fibrils through macrophage-mediated phagocytosis, which can be applied in the research of amyloid light-chain (AL) amyloidosis and other systemic amyloid diseases.