Checkpoint inhibition: subgroups, combination maintenance and retreatment
The global, randomized, open-label, phase III POSEIDON trial was conducted to test the PD-L1 antibody durvalumab with or without the CTLA-4 inhibitor tremelimumab in addition to chemotherapy Q3W for 4 cycles compared to platinum-based chemotherapy Q3W for up to 6 cycles.
