VEGFA and clear cell renal carcinoma: Analysis of data in TCGA deposited under the category “renal clear cell carcinoma” revealed that the expression of VEGFA (Spearman correlation r = −0.563, p < 0.00001), FLT1 (r = −0.302, p < 0.00001), and KDR (r = −0.213, p = 0.000123) inversely correlated with methylation of their respective promoters, based on data from 320 clear cell RCC samples in TCGA (Fig. 4).