3.

EGFR突变阳性患者PD-L1表达水平与临床病理特征关系

Relationship between PD-L1 expression level and clinicopathological characteristics in EGFR mutation-positive patients

Item	PD-L1 expression level			P
	< 1.0% (n=94)	1.0%-49.0% (n=36)	≥50.0% (n=11)
EGFR: epidermal growth factor receptor.
Gender				0.454
Male	43 (71.7%)	14 (38.9%)	3 (27.3%)
Female	51 (54.3%)	22 (61.1%)	8 (72.7%)
Age (yr)				0.095
< 65	55 (58.5%)	23 (63.9%)	3 (27.3%)
≥65	39 (41.5%)	13 (36.1%)	8 (72.7%)
Smoking status				0.959
Former	34 (36.2%)	14 (38.9%)	4 (36.4%)
Never	60 (63.8%)	22 (61.1%)	7 (63.6%)
Clinical stage				0.049
vI	35 (37.2%)	14 (38.9%)	1 (9.1%)
Ⅱ	1 (1.1%)	0	0
Ⅲ	9 (9.6%)	5 (13.9%)	0
Ⅳ	49 (52.1%)	17 (47.2%)	10 (90.9%)
Pathological type				0.022
Adenocarcinoma	92 (97.9%)	36 (100.0%)	9 (81.8%)
Squamous carcinoma	1 (1.1%)	0	1 (9.1%)
Others	1 (1.1%)	0	1 (9.1%)