Chimeric Antigen Receptor T Cell (CAR-T) is a type of immunotherapy that uses a patient’s own T cells to fight cancer. The T cells are genetically modified to express a special receptor, called a chimeric antigen receptor (CAR), which is designed to recognize and bind to a specific protein found on the surface of cancer cells. Once the CAR-T cells bind to the cancer cells, they can kill them. CAR-T therapy has been used to treat certain types of blood cancers, such as leukemia and lymphoma, and is being studied for other types of cancer.