Table 4. Clinical data of 530 ccRCC patients.

Clinical parameters	Variable	Total (530)	Percentages (%)
Age	<60	245	46.0%
	≥60	285	54.0%
Gender	Female	186	35.1%
	Male	344	64.9%
Histological grade	G1	14	2.6%
	G2	227	42.8%
	G3	206	38.9%
	G4	75	14.2%
	GX	5	1.0%
	Unknown	3	0.5%
Pathological stage	Stage I	265	50.0%
	Stage II	57	10.8%
	Stage III	123	23.2%
	Stage IV	82	15.5%
	Unknown	3	0.5%
Disease-free Status	Recurred/Progressed	123	23.2%
	Disease free	308	58.1%
	Unknown	99	18.7%
Survival status	Dead	173	32.6%
	Alive	357	67.4%