Immunotherapeutics is a research field and therapeutic approach focused on leveraging the host immune system to prevent or treat disease. This involves modulating immune responses to target pathological conditions. The field investigates the complex interplay between immune mechanisms and disease states, particularly in oncology, autoimmunity, and infectious diseases. Key characteristics include the development and application of agents such as monoclonal antibodies, cytokines, therapeutic vaccines, and engineered cell therapies designed to activate, suppress, or redirect immune cells, representing a significant paradigm shift in medical treatment by harnessing intrinsic biological processes.