Table 1. Correlation between KCNN4 expression and clinicopathologic factors in the TCGA cohort.

Clinicopathologic factors	Patients	High expression	Low expression	p-value
Gender
Female	367	180	187	0.546
Male	135	71	64
Age (years)
<60	389	196	193	0.831
≥60	113	55	58
Histological type
Classical	356	203	153	<0.0001*
Other types	146	48	98
Neoplasm focus type
Unifocal	266	135	131	0.928
Multifocal	226	113	113
T stage
I+II	307	135	172	0.001*
III+IV	193	114	79
Lymph node metastasis
Yes	222	150	72	<0.0001*
No	229	83	146
Disease stage(AJCC7)
I+II	333	149	184	0.001*
III+IV	167	101	66
New event
Yes	44	27	17	0.155
No	458	224	234

Note: *p-value< 0.05.

Abbreviations: KCNN4, Potassium calcium-activated channel subfamily N member 4; TCGA, The Cancer Genome Atlas; AJCC7, American Joint Committee on Cancer 7^th edition.