High expression of PCSK9 was associated with a poor OS prognosis in BLCA (p = 0.002), UVM (p = 0.012), LUAD (p = 0.028), SKCM (p = 0.0002), KIRC (p = 0.014), KIRP (p = 0.001), LIHC (p = 0.023), and BRCA (p = 0.009) (Figure 3C). This evidence concerns the gene PCSK9 and bladder transitional cell carcinoma.