Immunotherapy of Cancer By Robert Peter Gale, MD, PhD, DSC (hc), Imperial College London Reviewed / Revised May 2023 View Patient Education Passive Cellular Immunotherapy Passive Humoral Immunotherapy Active Specific Immunotherapy Immunotherapy and Targeting Inhibitors of Immune Responses Nonspecific Immunotherapy A number of immunologic interventions, both passive and active, can be directed against tumor cells.