Table 3. Clinical pathological parameters of ccRCC patients with or without mutation/CNV of m6A regulatory genes.

		With mutation and/or CNV*	Without mutation and CNV*	P
Age	<=60	32	218	0.325
	>60	25	225
Gender	Female	26	148	0.069
	Male	31	295
Pathological Stage	I	36	206	0.123
	II	7	48
	III	8	113
	IV	6	73
	Discrepancy	0	3
Historical Grade	G1	5	6	<0.001
	G2	33	175
	G3	14	182
	G4	4	74
	x	1	4
	N/A	0	2
T stage	T1	36	212	0.104
	T2	8	57
	T3	12	164
	T4	1	10
N stage	N0	25	201	0.683
	N1	1	17
	Nx	31	225
M stage	M0	51	353	0.133
	M1	6	71
	Mx	0	19

*With mutation or CNV: Cases have mutant or CNV or mutant+CNV, confirmed through TCGA database. Without mutant and CNV: Cases with neither mutant nor CNV, confirmed through TCGA database. Ambiguous variables (Nx, Mx, N/A, discrepancy and Gx) were excluded from chi-square test or non-parametric test