Hepatitis B Virus Associated B-Cell Non-Hodgkin Lymphoma in Non-Endemic Areas

ConclusionsTo our knowledge, this is the first study exploring HBV-related NHL in non-endemic areas. Interestingly, more than 40% of patients were born in high-endemic areas. The strong predominance of DLBCL (59%) is concordant with studies performed in high-incidence areas. Strikingly, it contrasts with the peculiar distribution of HCV-related NHL supporting that some different pathophysiological mechanisms contribute to NHL in HBV. However, as in HCV-related NHL, frequent hepatic or digestive involvement raises the hypothesis of home privileged lymphomagenesis favored by viral induced inflammation or by infection of B-cells. No difference was detected when comparing HBV DLBCL outcomes with non HBV patients. Remarkably, all patients, except one, received antiviral therapy combined with chemotherapy. In endemic areas, while some studies reported that patients with HBV NHL had a poorer prognostic, others suggested that antivirals could overcome this pejorative impact.This study, performed in Western Europe, area of low HBV prevalence, underlines the predominance of DLBCL among patients with active HBV infection and the similar outcomes of DLBCL patients to non-HBV patients when treated with a combination of R-CHOP and antivirals.DisclosuresNo relevant conflicts of interest to declare.
Source: Blood - Category: Hematology Authors: Tags: 627. Aggressive Lymphoma (Diffuse Large B-Cell and Other Aggressive B-Cell Non-Hodgkin Lymphomas)-Results from Retrospective/Observational Studies: Poster III Source Type: research