PRKD1 and transitional cell carcinoma: For BLCA, the GSE24152 dataset, which included seven normal kidney tissue samples and 10 urothelial cell carcinoma samples, identified 17,590 differentially expressed genes (DEGs), with 7,560 downregulated and 10,030 upregulated; PRKD1 was downregulated (logFC = -0.49774, adjusted p = 0.674) (Figure 19A).