Table III.

Association between PD-L1 expression in TCs/ICs and clinicopathological parameters.

		PD-L1 in TCs			PD-L1 in ICs
Variables	No.	Negative, n	Positive, na	P-valueb	Negative, n	Positive, n	P-valueb
HG
1-2	48	46	2	0.0002	41	7	0.0001
3	25	15	10		10	15
Ki-67, %
≤20	30	29	1	0.0218	26	3	0.0037
>20	43	33	10		25	19
TILs, %
<10	54	51	2	<0.0001	48	6	<0.0001
≥10	19	10	10		3	16

^aPD-L1 expression was evaluated using the SP142 antibody, and judged using a 1% cutoff.

^bComparison by Fishers exact test (2-sided). HG, histological grade; TILs, tumor-infiltrating lymphocytes; TCs, tumor cells; ICs, immune cells.