Table 1. YAP and PD-L1 IHC comparison in 142 human primary NSCLC tissues.

YAP
		Positive (++/+++)	Negative (−/+)	Total	X2	P value
PD-L1	Positive (++/+++)	43	9	52
	Negative −/+)	45	45	90
Total		88	54	142	14.947	<0.001

− = no stain; + = weak stain; ++ = moderate stain; +++ = strong stain; ++/+++ = positive; −/+ = negative.