Table 2a.

Associations of PKM2 and PD-L1 protein expression with clinicopathological parameters of lung AC tissues. (a) PKM2 and PD-L1 protein expression in tumor cells.

	PKM2 in tumor cells			PD-L1 in tumor cells			PKM2 and PD-L1
Parameters	High	Low	P	High	Low	P	Both high	Others	P
Gender			0.253			0.197			0.974
Male	22	20		15	27		8	34
Female	21	11		7	25		6	26
Age			0.235			0.567			0.208
<=64	31	26		16	41		9	48
>64	12	5		6	11		5	12
Depth of invasion (T)			0.249			0.218			0.027
T1,T2	37	30		18	49		10	57
T3,T4	6	1		4	3		4	3
Lymph node metastasis (N)			0.035			0.297			0.075
N0	23	24		12	35		6	41
N1,N2	20	7		10	17		8	19
TNM stage			0.017			0.151			0.029
I,II	20	23		10	33		4	39
III	23	8		12	19		10	21
Smoking history			0.628			0.686			0.603
Yes	17	14		10	21		5	26
No	26	17		12	31		9	34
Histological type			0.383			0.096			0.339
Invasive	40	26		22	44		14	52
Variant	3	5		0	8		0	8