TABLE 1.

Patient and tumor characteristics

	n	%
Age
Mean (SD)	63.8	(18.7)
Median (range)	73	(23‐89)
Gender
Male	10	40
Female	15	60
Disease presentation
Primary cancer	20	80
Recurrent cancer	5	20
Tumor site
Tongue	14	56
Gingiva	9	36
Buccal	2	8
Floor of mouth	0	0
Stage
≦Ⅱ	23	92
≧Ⅲ	2	8
PD‐L1 expression
< 5%	18	72
≧ 5%	7	28