MKI67 and pancreatic adenocarcinoma: Poor prognosis was also correlated with higher MKI67 expression in PAAD (OS: P = 6.7e−05, HR = 2.28); PFS: P = 0.014, HR = 2.85); SARC (OS: P = 0.0028, HR = 1.82); PFS: P = 0.0025, HR = 1.82); and STAD (OS: P = 0.01, HR = 0.65); PFS: P = 0.0042, HR = 0.39) (Additional file 1: Figure S1F–H).