RecruitingPhase 2Drug trialAnti-CD38 Monoclonal Antibody Combined With Rituximab in the Management of Primary Immune Thrombocytopenia (ITP)This single-arm, open-label phase II study aim to evaluate the efficacy and safety of Daratumumab (anti-CD38 monoclonal antibody) combined with Rituximab in ITP patients.This study will be conducted in ITP patients who had not responded to or had relapsed after previous glucocorticoid treatment.