Table 2 Tumor associated PD-L1 expression

1

1 T, very weak

1

3

2

4, predominantly T, peripheral

1

40

3

Melanin confounds

2

NA

4

0

2 (adjacent subcapsular sinus)

0

5

4 T/NT

2

30

6

2, predominantly NT

3

3

7

0

3 (adjacent subcapsular sinus)

0

8

2.5, predominantly NT

3

10

9

4.5, predominantly T, weak

2 (adjacent sinus)

50

10

Melanin confounds

0

NA

11

1 T

2.5

<1

12

0^a

2

0

13

1 T

1

<1

14

2.5 NT

2

10

15

2 predominantly NT

3

3

16

1 T

2

1

17

Melanin confounds

0

NA

18

1

1

<1

19

1 NT

2.5

<1

20

2T?, melanin confounds

2

<1

21

4, predominantly T, peripheral

3.5

40

22

5, predominantly T

2

90

23

4

0

40

24

4.5 T/NT

0

70