Certain organ toxicities can be severe and life-threatening. Therefore, it is crucial to recognize these disease entities early on to provide prompt and effective treatments to improve the quality of patient care, and enable the continuation of cancer therapy long-term. A clinical handbook with a particular focus in this field is lacking. This handbook focuses on the comprehensive, systematic review of clinical aspects of immunotherapy-induced toxicities in 15 major organ systems. The organs covered include endocrine, eye, gut, heart, kidney, liver, lung, muscular-skeletal, neuro, pancreas and skin etc. A unique feature about this book is the inclusion of perspectives from Anesthesiology, Infectious Disease, and Pathology besides specific organ toxicity management.