Principles of Immunotherapy in Breast and Gastrointestinal Cancers: Activity, Mechanisms of Resistance, and New Sensitization Strategies presents updated research findings on immunotherapy, with a special focus on the mechanisms of resistance of those cancer types and how to overcome them. The book discusses topics such as tumor cell-intrinsic and -extrinsic mechanisms of cancer resistance to immunotherapy; the role of currently available biomarkers; strategies to overcome therapeutic resistance; sensitizing agents for cancer resistance to cell-mediated immunotherapy; and immunotherapeutic approaches, mechanisms of resistance, and sensitizing strategies in gastroesophageal and biliopancreatic tumors and colorectal cancer. It is a valuable resource for researchers, students, and members of the biomedical and medical fields who want to learn more about resistance to immunotherapy and how to overcome it.