Evaluation of PD-L1 Expression in Tumor Tissue of Patients with Lung Carcinoma and Correlation with Clinical and Demographic Data
Table 3
PD-L1 expression in conventional histological slides (individual analysis).
Cell type
Evaluation method
Graduation
%
Tumor cell
Intensity
Absence
97
54.8
Weak
52
29.3
Moderate
16
9
Strong
1
0.6
Missing
11
6.2
Tumor cell
Percentage (3 categories)
Absence
97
54.8
Up to 10%
6
3.4
From 11% to 50%
33
18.6
More than 50%
30
16.9
Ignored
11
6.2
Tumor cell
Percentage (2 categories)
Positive
67
37.9
Negative
99
55.9
Ignored
11
6.2
Intratumoral immune cells
Intensity
Absence
123
69.5
Weak
25
14.1
Moderate
15
8.5
Strong
3
1.7
Ignored
11
6.2
Intratumoral immune cells
Percentage (3 categories)
Absence
123
69.5
Up to 10%
3
1.7
From 11% to 50%
15
8.5
More than 50%
25
14.1
Ignored
11
6.2
Intratumoral immune cells
Percentage (2 categories)
Positive
43
24.3
Negative
123
69.5
Ignored
11
6.2
Positive: more than 5% stained cells. Negative: less than 5% stained cells. Ignored: staining problems preventing classification into positive or negative.
