Taking FGFR1-4 as an example, FGFR1 was an adverse prognostic factor in BLCA, kidney renal papillary cell carcinoma (KIRP), glioblastoma multiforme (GBM), and LGG, whereas it was a favorable prognostic factor in PAAD (Figures 2(b)–2(f)). Here, FGFR1 is linked to bladder transitional cell carcinoma.