RecruitingPhase 2Drug trialRituximab Combining Anti-CD38 Monoclonal Antibody Versus Rituximab in the Management of Primary Immune Thrombocytopenia (ITP)This randomized, open-label study aim to compare the efficacy and safety of rituximab combining anti-CD38 monoclonal antibody 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.