Hemophagocytic Syndrome Clinical Trial
Official title:
A Randomized Controlled Study of High-dose Cyclophosphamide Induction Therapy in Adult Patients With HLH
Adult secondary HLH involves tumors, autoimmune diseases and other causes in addition to infection,Infectious factors, theoretically need different treatment methods for different etiology. But adult HLH itself disease .The situation progresses ferociously, which can cause organ damage and blood coagulation disorder and endanger life quickly, with early mortality (30days).It can be more than 50%. On the other hand, although diagnostic techniques have improved significantly, identifying the cause is still costly Time, such as 1-2 weeks for the pathological diagnosis of lymphoma, leads to more patients losing further treatment due to early death. The opportunity to heal. Therefore, it is important to explore effective induction therapy for adult HLH. In the majority ,Early (30-day) mortality was as high as 40% after cardiac induction using HLH2004 or CHOP(cyclophosphamide, hydroxydaunomycin, Oncovin, and prednisone) induction. HLH, on the other hand, usually requires prompt treatment before the cause is established. Due to a specific infection HLH can benefit from anti-infective therapy. Therefore, it is necessary to explore more effective induction therapy for adult non-infective HLH.It has very important clinical significance. Adult secondary HLH has the common features of a large number of T cell proliferation and activation and a significant reduction of NK(natural killer) cells, in which the central liNK(natural killer) is a large number of T cells proliferation and secomplete remission etion of cytokines, which can be used as induction therapy.Common target is also the pathological basis for designing unified induction scheme. Cyclophosphamide is a commonly used alkylated chemotherapy drug,It's also an important immunosuppressant. Based on the treatment of regenerative disorders anemia, allogeneic hematopoietic stem cell transplantation prevention.Experience with Plant versus Host disease (GVHD) has shown that the use of cyclophosphamide exceeds a total dose of 25mg/day,Two days can effectively kill CD8(cluster of differentiation 8 )+ or CD4(cluster of differentiation 4 )+T cells, and the maximum tolerated dose of this drug in humans exceeds 50mg/kg/day for two days. Aiming at the central liNK(natural killer) of adult HLH pathogenesis, The investigators designed for the first time to use a large dose of cyclophosphamide (25mg-50mg/kg/day 2days) to inhibit the activation of T cells, inhibit the production of cytokines and block the development mechanism of HLH. This study intends to conduct a randomized controlled study, with HLH2004 scheme as the control, and the observation is large efficacy and safety of dose cyclophosphamide in induction therapy of non-infective adult HLH in order to complete remission eate a new induction Treatment plan.
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