Hepatocellular carcinoma in HBsAg seroclearance: clinical features, recurrence, and prognosis following curative hepatectomy

Abstract

Aim: To explore clinical features and prognosis of hepatocellular carcinoma (HCC) in hepatitis B virus surface antigen (HBsAg)-serocleared patients and identify risk factors associated with postoperative recurrence after curative hepatectomy. Methods: Patients who had undergone initial hepatectomy for HCC from January 2010 through December 2022. Clinicopathological data were compared between HBsAg-seropositive and HBsAg-serocleared patients. Furthermore, risk factors associated with early and late postoperative HCC recurrence (early and late recurrences (ER and LR), respectively) were analyzed for HBsAg-serocleared HCC patients treated by curative hepatectomy. Results: A total of 2184 consecutive patients undergoing initial hepatectomy for HCC were enrolled, including 339 (15.5%) HBsAg-serocleared and 1845 (84.5%) HBsAg-seropositive cases. Tumor characteristics were comparable between the two groups. After curative hepatectomy, the ER rate was lower in the HBsAg-serocleared group than in the HBsAg-seropositive group (16.2% vs 26.3%; p = 0.000). LR rates in the HBsAg-seropositive and HBsAg-serocleared groups were similar (8.3% vs 6.9%, respectively, p = 0.418). Multivariate analysis showed that among HBsAg-serocleared patients, Hong Kong Liver Cancer stage and microvascular invasion were risk factors associated with postoperative ER, while γ-glutamyl transferase level and neutrophil-to-lymphocyte ratio were associated with LR. Conclusion: HBsAg-serocleared and HBsAg-seropositive HCC patients exhibited similar tumor characteristics. Curative hepatectomy-treated HBsAg-serocleared HCC patients experienced a lower ER rate and better short-term (⩽3 years) overall survival (OS) rates than their HBsAg-seropositive counterparts. LR, very late recurrence, and long-term (4-, and 5-year) OS rates were similar between the two groups.