deaths (OS)

laHNSCC - 1st line (L1) locally advanced (laHNSCC) laHNSCC - 1st line (L1)

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 0.83 [0.70; 0.99], 1 RCT, I2=0%
unassessable degree of certainty
pembrolizumab plus 5FU plus platin vs. cetuximab plus platin plus 5FU 1 0.77 [0.63; 0.94], 1 RCT, I2=0% conclusive
unassessable degree of certainty

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 0.78 [0.64; 0.96], 1 RCT, I2=0% conclusive
unassessable degree of certainty
pembrolizumab plus 5FU plus platin vs. cetuximab plus platin plus 5FU 2 0.63 [0.51; 0.77], 1 RCT, I2=0% conclusive
unassessable degree of certainty

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 0.80 [0.65; 0.98], 1 RCT, I2=0% conclusive
unassessable degree of certainty

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 0.74 [0.58; 0.94], 1 RCT, I2=0% conclusive
unassessable degree of certainty