The Incidence of Hepatitis B in Diffuse Large B-Cell Lymphoma/Chronic Lymphoid Leukemia HBsAg-positive Treated With Rituximab, Chemotherapy and Tenofovir Alafenamide

In this study, we will evaluate the incidence of hepatitis B virus reactivation within the first 6 months of treatment with rituximab, standard chemotherapy and TAF in patients with diffuse Large B-Cell Lymphoma/Chronic Lymphoid Leukemia HBsAg-positive.

This is a prospective, multicenter, interventional, single arm, evaluating the incidence of hepatitis B virus (HBV) reactivation within the first 6 months treatment period in HBsAg positive patients treated for DLBCL/Chronic Lymphoid Leukemia with Rituximab, standard chemotherapy, and TAF. Approximate duration of the recruitment period based on the number of patients available The duration of the recruitment period has been estimated at 12 months. Patients will receive Rituximab+Chemotherapy+TAF for 6 months, followed by TAF as monotherapy for further 12 months. All subjects will receive TAF 1-3 weeks before Rituximab+Chemotherapy and withdrawn 12 months after the completion of chemotherapy. Then patients will be also observed for further12 months