The TGI indexes were, respectively, 85.98%, 66.27%, 55.80%, 55.25%, and 19.4% in the five CK19+ HCC PDX models, and 42.05%, 37.47%, 32.24%, 26.28%, and −8.84% in the five CK19− HCC PDX models (Fig. 4C). Here, KRT19 is linked to hepatocellular carcinoma.