Hye Won Lee, Hwiyoung Kim, Taeyun Park, Soo Young Park, Young Eun Chon, Yeon Seok Seo, Jae Seung Lee, Jun Yong park, Do Young Kim, Sang Hoon Ahn, Beom Kyung Kim, Seung Up Kim

A machine learning model for predicting hepatocellular carcinoma risk in patients with chronic hepatitis B

  • Hepatology
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AbstractBackgroundMachine learning (ML) algorithms can be used to overcome the prognostic performance limitations of conventional hepatocellular carcinoma (HCC) risk models. We established and validated an ML‐based HCC predictive model optimized for patients with chronic hepatitis B (CHB) infections receiving antiviral therapy (AVT).MethodsTreatment‐naïve CHB patients who were started entecavir (ETV) or tenofovir disoproxil fumarate (TDF) were enrolled. We used a training cohort (n = 960) to develop a novel ML model that predicted HCC development within 5 years and validated the model using an independent external cohort (n = 1937). ML algorithms consider all potential interactions and do not use predefined hypotheses.ResultsThe mean age of the patients in the training cohort was 48 years, and most patients (68.9%) were men. During the median 59.3 (interquartile range 45.8–72.3) months of follow‐up, 69 (7.2%) patients developed HCC. Our ML‐based HCC risk prediction model had an area under the receiver‐operating characteristic curve (AUC) of 0.900, which was better than the AUCs of CAMD (0.778) and REAL B (0.772) (both p < .05). The better performance of our model was maintained (AUC = 0.872 vs. 0.788 for CAMD and 0.801 for REAL B) in the validation cohort. Using cut‐off probabilities of 0.3 and 0.5, the cumulative incidence of HCC development differed significantly among the three risk groups (p < .001).ConclusionsOur new ML model performed better than models in terms of predicting the risk of HCC development in CHB patients receiving AVT.

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