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Table 1 Patient characteristics

From: PD-L1 expression in malignant salivary gland tumors

Characteristic

Total (n = 47) No. of patients

%

Gender

 Male

26

55.3

 Female

21

44.7

Stage

 I

9

19.1

 II

18

38.3

 III

5

10.6

 IV

15

31.9

Histology

 adenoid cystic carcinoma

25

40.4

 mucoepidermoid carcinoma

9

17.0

 adenocarcinoma

11

23.4

 mucinous adenocarcinoma

2

6.4

Recurrence or metastasis after surgery

 No

31

66.0

 Yes

16

34.0

PD-L1 expression in tumor cells membrane

  < 5% (negative)

23

48.9

  ≥ 5% (positive)

24

51.1

PD-L1 expression in tumor-infiltrating mononuclear cells (TIMC)

 Score < 4 (negative)

27

57.4

 Score ≥ 4 (positive)

20

42.6

 

Median

Min-max

Age (years)

62.0

24–80