Using the UALCAN web portal (http://ualcan.path.uab.edu, accessed on 19 August 2023), which allows analyzing gene expression based on TCGA RNA-Seq data [26], we estimated expression changes of CTDSP1, CTDSP2, CTDSPL, and RB1 in two major molecular subtypes of ccRCC, namely ccA (clear cell type A) and ccB (clear cell type B) (Figure 3A–D). This evidence concerns the gene CTDSP2 and nonpapillary renal cell carcinoma.