FURIN and glioblastoma: High FURIN expression was closely related to unfavorable prognosis in GBM (N = 147, p = 0.006), KIRP (N = 283, p = 0.028), LGG (N = 501, p < 0.0001), LUAD (N = 469, p = 0.0015), and STAD (N = 349, p = 0.0015) via the Kaplan–Meier method.