Treatment options for cancer have expanded beyond traditional chemotherapy and radiation therapy. Research has led to the development of targeted therapies that focus on specific molecular targets involved in cancer growth. For instance, imatinib targets the BCR-ABL protein in chronic myeloid leukemia. Immunotherapy has also revolutionized cancer treatment by harnessing the body's immune system to fight cancer cells. Drugs like checkpoint inhibitors and CAR-T cell therapy are notable examples.