CD274 and hepatocellular carcinoma: In published clinical trials of anti-PD1/ anti-PD-L1-based combination therapy for unresectable HCC, efficacy appears to a plateau, with an overall survival of 20 months, a progression-free survival of 7–8 months, and an objective tumor response approximately 25% based on RECIST 1.1 (response evaluation criteria in solid tumors, Table 3) [48].