Targeting the PD-1/PD-L1 connections with inhibitors has emerged as a powerful immunotherapy against these cancer types. Inhibiting the PD-1/PD-L1 pathway with therapeutic antibodies results in restoration of immune responses and activation of
t-cells directed to kill the tumour cell.
This therapy has been shown to induce a strong clinical response in many tumour types, for example 20-40% in melanoma and 33-50% in advanced non small cell lung cancer (NSCLC).