The document discusses the role of immune checkpoint inhibitors (ICIs) in cancer immunotherapy, detailing how these therapies, such as anti-PD-1 and anti-CTLA-4 agents, function by modulating T-lymphocyte responses against cancer. It also outlines various FDA-approved ICIs, their indications, combination regimens, and potential immune-related adverse effects, emphasizing the importance of early recognition and management of these effects in oncology nursing practice. Overall, the document serves as a practical guide for oncology nurses to maximize the benefits of cancer immunotherapies while minimizing associated risks.