Gene-gene interaction of PRKD1 in bladder urothelial carcinoma (BLCA) (cutoff: 0.46) showed co-expression of 77.42%, physical interaction of 10.96%, co-localization of 9.69%, predicted of 1.22%, genetic alteration of 0.47%, shared protein domains of 0.21 %, and pathway of 0.03% (Figure 13A). The gene discussed is PRKD1; the disease is bladder transitional cell carcinoma.