PTCH1 and hepatocellular carcinoma: When the “Forward: conditional” method was used, seven markers were included in the model with the following equation: Prediction probability value of HCC = 1 / (1 + Exp (−(2.522 × TP53 + 3.042 × Survivin + 2.625 × MSH2 + 4.241 × GNAS + 3.676 × PAX5 − 8.789 × GNA11 + 3.688 × PTCH1 − 3.863))).