Objective to evaluate the efficacy and safety of maintenance therapy with Chidamide in patients With Hepatitis B Virus（HBV）Positive Diffuse Large B-cell Lymphoma（DLBCL） with complete response after completion of prior chemotherapy, so as to provide the basis for the application of Chidamide in HBV positive DLBCL
A phase II，single arm，open-label study to assess Maintenance Therapy of Chidamide in Patients With Hepatitis B Virus（HBV）Positive Diffuse Large B-cell Lymphoma with complete response after completion of prior chemotherapy