Table 1.

Clinical characteristics of ccRCC patients in the TCGA database.

Characteristics		Total	%
Age at diagnosis (y)		58 (26~90)
Gender	Male	346	64.43
	Female	191	35.57
Grade	G1	14	2.65
	G2	230	43.48
	G3	207	39.13
	G4	78	14.74
Stage	I	269	50.37
	II	57	10.67
	III	125	23.41
	IV	83	15.55
T stage	T1	275	51.21
	T2	69	12.85
	T3	182	33.89
	T4	11	2.05
M stage	M0	426	84.36
	M1	79	15.64
N stage	N0	240	93.39
	N1	17	6.61