2.

Correlation between PD-L1 expression and classical genomic aberrations in Chinese LADC patients

Genes alterations	TPS ≥ 1%	TPS < 1%	P	TPS ≥ 50%	TPS < 50%	P
*P< 0.05 was considered as significant. Abbreviations: TPS, tumor proportion score; IHC, immunohistochemistry.
EGFR (PCR)			0.001*			< 0.001*
Mutation	35	252		6	281
Negative	35	106		15	126
ALK (IHC)			0.008*			0.039*
Positive	5	6		2	9
Negative	65	352		19	398
KRAS (PCR)			0.096			0.006*
Mutation	9	25		5	29
Negative	61	333		16	378
ROS1 (PCR)			0.416			0.140
Rearrangement	1	2		1	2
Negative	69	356		20	405