What Is the Role of Immunotherapy in Cancer Treatment?
[Immunotherapy](https://) harnesses the body's immune system to fight cancer. This can involve [checkpoint inhibitors](https://), which block proteins that prevent the immune system from attacking cancer cells, or [CAR-T cell therapy](https://), which involves modifying a patient's T cells to better recognize and destroy cancer cells. Companies like [Bristol-Myers Squibb](https://) and [Merck](https://) have developed successful immunotherapy drugs like Opdivo and Keytruda, respectively.
