Table 2.

Features of patients with lung adenocarcinoma harboring KRAS mutation

	KRAS mutation (n=113)		KRAS WT (n=1,255)		P-value
	n	%	n	%
Sex					P<0.001*
Male	90	80	533	42
Female	23	20	722	58
Age					P=0.245
<60 years	63	56	628	50
≥60 years	50	44	627	50
Smoker					P<0.001*
Never	34	30	886	71
Former/current	79	70	369	29
Differentiation					P=0.008*
Well/moderate	63	56	854	68
Poor	50	44	401	32
Pathological stage					P=0.626
I/II	78	69	838	67
III/IV	35	31	417	33
IMA predominant					P<0.001*
Yes	23	20	59	5
No	90	80	1,196	95
Solid predominant					P=0.004*
Yes	34	30	220	18
No	79	70	1,035	82

Note:

^*Indicates statistical significance.

Abbreviations: IMA, invasive mucinous adenocarcinoma; WT, wild type.