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

mHNSCC - L1 - all population metastatic-recurrent HNSCC (mHNSCC) mHNSCC - 1st line (L1) mHNSCC - L1 - all population

versus cetuximab plus platin plus 5FU
pembrolizumab alone vs. cetuximab plus platin plus 5FU 1 1.0better0.35.098 %1.0better0.35.0100 %-

mHNSCC - L1 - PDL1 positive metastatic-recurrent HNSCC (mHNSCC) mHNSCC - 1st line (L1) mHNSCC - L1 - PDL1 positive

versus cetuximab plus platin plus 5FU
pembrolizumab alone vs. cetuximab plus platin plus 5FU 2 1.0better0.35.099 %1.0better0.35.094 %-

mHNSCC - L2 - all population metastatic-recurrent HNSCC (mHNSCC) mHNSCC - 2nd line (L2) mHNSCC - L2 - all population

versus Standard of Care (SoC)
pembrolizumab alone vs. Standard of Care (SoC) 1 1.0better0.35.098 %1.0better0.35.066 %-

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

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

versus Standard of Care (SoC)
pembrolizumab alone vs. Standard of Care (SoC) 1 1.0better0.35.099 %1.0better0.35.054 %-