Antiviral prophylaxis for hepatitis B carriers improves the prognosis of diffuse large B‐cell lymphoma in Taiwan – a population‐based study.

Summary: The prevention of hepatitis B virus (HBV) reactivation during rituximab treatment for diffuse large B‐cell lymphoma (DLBCL) is important in the HBV‐endemic area. This population‐based study examines the impact of antiviral prophylaxis for DLBCL patients with HBV infections. We identified 3702 adult patients with newly diagnosed DLBCL between 2011 and 2015 receiving R‐CHOP, R‐CVP, CHOP or CVP from the Taiwan Cancer Registry. We further stratified them into three groups: HBsAg‐negative patients (HBV‐negative, N = 2921), HBV carriers who received antiviral prophylaxis (HBV + Px, N = 711), and HBV carriers who did not receive antiviral prophylaxis (HBV + No Px, N = 70). HBV + Px patients were the youngest, and 69·4% received entecavir for antiviral prophylaxis. The median overall survival (mOS) of HBV‐negative and HBV + Px patients was similar (74·23 months and not reached, respectively). However, the mOS of HBV + No Px patients was only 35·61 months (P = 0·0028 compared with HBV + Px patients), indicating that antiviral prophylaxis improves OS in HBsAg‐positive DLBCL patients. The multivariate analysis showed that the HBV status and antiviral prophylaxis was an independent prognostic factor. In conclusion, our population‐based study illustrates the importance of antiviral prophylaxis in HBsAg‐positive DLBCL patients. Under antiviral prophylaxis, the survival of DLBCL patients with HBV infections was comparable to that of HBV‐negative patients. [ABSTRACT FROM AUTHOR]