PTK2 and hepatocellular carcinoma: We evaluated by immunofluorescence the expression of total FAK in 17 pediatric HCCs (11 HCC in cirrhotic liver, C-HCC, and 6 in non-cirrhotic liver, NC-HCC) compared with 8 age-matched healthy livers (CTRL) (Figure 1A–C and Supplementary Materials Table S1).