GPT and hepatocellular carcinoma: The results from both the training set and the test set in the Zhengzhou center showed that ALT, AST and GGT were included in the model and could supplement the efficacy of anti-OLA1 autoantibody in the diagnosis of HCC, with an AUC of 0.92 (95% CI = 0.89–0.95) in the training set and 0.90 (95% CI = 0.82–0.97) in the test set (Figure 5A).