E2F1 and lung adenocarcinoma: As shown in Fig. 8, the prognostic HR values of E2F1 in patients with Bladder Urothelial Carcinoma, Colon adenocarcinoma, and Lung adenocarcinoma were 1.10 (P = 0.61), 1.00 (P = 0.99), 1.3 (P = 0.14), respectively.