IL18 and renal carcinoma: We further explored the correlation between the methylation of IL18 promoter and the clinical characteristics of renal cancer patients, we analyzed IL18 and the six methylation sites on IL18 promoter (cg04100971, cg04929355, cg05687149, cg09122223, cg11304234 and cg26534425) with the clinicopathological data of renal cancer patients by using the TCGA data.