SERPINE2 and renal pelvis/ureter urothelial carcinoma: The immunoscore expressed by SERPINE2 was also significantly associated with invasion (p = 0.001), UIS (UTUC, p = 0.033; UBUC, p = 0.003), and advanced pT stage (UTUC, p < 0.001; UBUC, p = 0.003).