What is "pembrolizumab"

n. A drug that targets the programmed cell death 1 (PD-1) receptor, intended for use in treating metastatic melanoma.

Pembrolizumab (formerly MK-3475 and lambrolizumab, trade name Keytruda) is a humanized antibody used in cancer immunotherapy. It targets the programmed cell death 1 (PD-1) receptor. The drug was initially used in treating metastatic melanoma.