Table 2. Wilcoxon signed-rank test results of the immunohistochemical staining scores of the NFE2L2/KEAP1/CUL3 pathway.

Gene	Expression			P value
	Tumor > normal	Timor = normal	Tumor < normal
NFE2L2	28	16	6	<0.001
KEAP1	28	11	11	0.056
CUL3	24	7	19	0.996

NFE2L2, nuclear factor erythroid 2-like 2; KEAP1, kelch-like ECH-associated protein 1; CUL3, cullin 3.