About this trial
Due to long-term dependence on platelet transfusion, some severe aplastic anemia (SAA) patients suffer platelet transfusion refractoriness (PTR). Unlike immune thrombocytopenia (ITP), glucocorticoids and human immunoglobulin (IVIg) are generally ineffective for PTR. Due to the lack of effective intervention methods, patients with PTR suffer increased platelet transfusions, bleeding events and treatment costs, prolonged hospital stays, and decreased survival rate. SAA with PTR has become a challenge for physicians. The experiment aims to explore the efficacy of rituximab in the treatment of SAA with PTR, and establish a new effective, safe treatment method with relatively low treatment cost.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Initial diagnosed SAA with PTR
Age>18 years old, regardless of gender
Initial diagnosed SAA with PTR
Age>18 years old, regardless of gender
Disqualifiers
Allergy to rituximab
Severe active infection
Hypogammaglobulinemia
Pregnant and lactating women
Trial design
Single group
Treatments tested in this trial
Rituximab
DrugRituximab is administered at a dose of 100mg per week, a total of 4 times. Cyclosporin is administered at a dose of 3-5mg/kg per day.
Treatment groups
Trial outcomes
Primary outcomes
The response and complete remission rate with Rituximab protocol.
Response will be evaluated at each clinic visit. Complete response (CR) was defined as achieving all three peripheral blood count criteria: (1) Hb level up to the normal range; (2) ANC≥1.5×109/L; (3) PLT≥100×109/L. Partial response (PR) was defined as transfusion independent, no longer meeting criteria for severe disease. Persistence of transfusion requirement or death was evidence of no response (NR).
Secondary outcomes
Relapse rate
Relapse was defined as a responder who met criteria for SAA again after achieving response and keeping stable blood counts for at least 3 months.
Sustained response (SR)
SR was defined as Hb \> 10 g/dL at 12 months and 60 months, in the absence of any treatment.
Survival
Survival rate within 5 years after diagnosis
Clonal evolution to myelodysplasia and acute leukemia.
Clonal evolution within 5 years after diagnosis
Sponsors and contacts
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