AUC	Area under the curve
BOR	Best overall response
CPS	Combined positive core
CR	Complete response
DCR	Disease control rate
irAE	Immune-related adverse event
mOS	Median overall survival
mPFS	Median progression-free survival
NCCN	National Comprehensive Cancer Network
ORR	Overall response rate
OS	Overall survival
PD	Progression disease
PFS	Progression-free survival
PR	Partial response
PS	Performance status
R/M SCCHN	Recurrent or metastatic squamous cell carcinoma of the head and neck
SD	Stable disease