AZ’s Durvalumab/Tremelimumab combo flops in NSCLC
British drug maker AstraZeneca has failed to expand the reach of its combo of PD-1/CTLA4 checkpoint blockers Durvalumab/Tremelimumab. The approved second-line NSCLC treatment missed to prolong progression-free and overall survival in patients with low PD-L1 expression.

