A few of previous studies have established preoperative prognosis models for ICC, however, some studies just use single preoperative indicators or indexes to predict the prognosis of ICC, such as albumin-bilirubin grade (ALBI), albumin-to-alkaline phosphatase ratio (AAPR) 29, and preoperative prognostic nutritional index (PNI) 30. Here, ALB is linked to intrahepatic cholangiocarcinoma.