deaths (OS)

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

versus Standard of Care (SoC)
nivolumab alone vs. Standard of Care (SoC) 1 0.70 [0.51; 0.96], 1 RCT, I2=0% conclusive
unassessable degree of certainty