Patient characteristics according to PD-L1 expression on tumor cell membrane

Characteristics (N = 28)% Positive tumor cell membrane
<5% (negative) (n = 25, 89.3%) n(%)5% or more (positive) (n = 3, 10.7%) n(%)P-value*
UICC Stage**I/II9(90)1(10)-
III/IV13(92.8)1(7.2)
ENSAT Stage**I/II9(90)1(10)-
III/IV13(92.8)1(7.2)
Grade***Low1(100)0(0)-
High10(90.9)1(9.1)
Functional Tumors at DiagnosisYes14(100)0(0)0.22
No11(78.6)3(21.4)

*Fisher’s Exact Test.

**Missing: 4.

***Missing: 12.