Pembrolizumab (formerly lambrolizumab, brand name Keytruda) is a humanized antibody used in cancer immunotherapy. This includes treating melanoma, lung cancer, head and neck cancer, Hodgkin lymphoma, and stomach cancer. It is given by slow injection into a vein.
anti-PD-1 drug (monoclonal antibody to PD-1 programmed cell death receptor): pembrolizumab (Keytruda) approved for advanced or unresectable melanoma not responding to other drugs 1).