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 All subjects will receive TAF 1-3 weeks before Rituximab+Chemotherapy and withdrawn 12 months after the completion of chemotherapy.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
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.