Table 1.

The clinical characteristics of patients.

TCGA		GEO
Variables	Number of samples	Variables	Number of samples
Gender		Gender
Male/female	242/280	Male/female/NA	223/220/19
Age at diagnosis		Age at diagnosis
≤65/>65/NA	241/262/19	≤65/>65	231/212
Stage		Stage
I/II/III/IV/NA	279/124/85/26/8	I/II/III/IV/NA	Unknown
T		T
T1/T2/T3/T4/NA	172/281/47/19/3	T1/T2/T3/T4	Unknown
M		M
M0/M1/NA	353/25/144	M0/M1/NA	Unknown
N		N
N0/N1/N2/N3/NA	335/98/75/2/12	N0/N1/N2/N3	Unknown

GEO, Gene Expression Omnibus; TCGA, The Cancer Genome Atlas; T, T stage; M, M stage; N, N stage.