Expression Pattern of PD-1/PD-L1 in Primary Liver Cancer With Clinical Correlation

The expression pattern and clinical correlation of PD-L1 and PD-1 were analyzed in 5245 primary liver cancer patients (PLCs). The positivity rates of PD-L1 and PD-1 were very low in the patient PLCs, but the positivity rates of PD-L1 and PD-1 were higher in the intrahepatic cholangiocarcinoma (ICC) and combined HCC-ICC than in HCC.