deaths (OS)progression or deaths (PFS)RFS/DFS

mHNSCC - L2 - PDL1 negative metastatic-recurrent HNSCC (mHNSCC) mHNSCC - 2nd line (L2) mHNSCC - L2 - PDL1 negative

versus durvalumab alone
durvalumab plus tremelimumab vs. durvalumab alone 1 certainty unassessable-1% certainty unassessable+13%-
versus tremelimumab
durvalumab plus tremelimumab vs. tremelimumab 1 certainty unassessable-26% certainty unassessable-25%-