HLA-G and colorectal carcinoma: Although AJCC disease stage, HLA-G, ILT-2, ILT-4, and PD-L1 expression were closely related to the survival of patients with CRC, covariate Cox regression data revealed that only AJCC disease stage (HR=2.435, 95% CI: 1.300 ~ 4.562; p=0.005) and ILT-4 (HR=2.198, 0.985 ~ 5.042; p=0.063) were independent prognostic factors for those patients (Table 4).