Skip to main content

Table 2 Tumor associated PD-L1 expression

From: Tumor associated PD-L1 expression pattern in microscopically tumor positive sentinel lymph nodes in patients with melanoma

Patient with SLN+ (N = 24) Tumor associated expression
Semi-quantitative scoring Percentage estimates—tumor
PD-L1 score—tumor PD-L1—peritumoral
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 0a 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
  1. aVery few tumor cells. In one region where a few tumor cells were present, a dense area of PD-L1 positivity was present directly adjacent but was impossible to say if all were non-tumor; this is interpreted as most likely