ALB and cancer: These selected 12 features were C‐reactive protein (CRP), PD‐L1 level, cancer type, prior liver metastasis, derived neutrophil‐to‐lymphocyte ratio (dNLR), alkaline phosphatase (ALP), albumin (ALB), hemoglobin (HGB), white blood cell count (WBC), number of metastatic sites, pulse rate, and Eastern Cooperative Oncology Group (ECOG) performance status.