目的:评价造血干细胞移植( HSCT)治疗重型再生障碍性贫血( SAA)的疗效。方法回顾性分析2002年1月至2013年12月苏州大学附属第一医院血液科采用 HSCT 治疗的43例SAA患者资料,其中男22例,女21例,中位年龄31(12~49)岁。 SAA-Ⅰ型29例,SAA-Ⅱ型14例。同胞异基因造血干细胞移植(Sib-HSCT)35例,无关供体异基因造血干细胞移植(UD-HSCT)8例。骨髓移植(BMT)10例,外周血造血干细胞移植(PBSCT)23例,BMT联合PBSCT 10例。大多数患者预处理方案为氟达拉滨/环磷酰胺+抗胸腺细胞球蛋白( Flu/Cy+ATG)。 Sib-HSCT患者以环孢霉素( CsA)/短程甲氨蝶呤( MTX)预防移植物抗宿主病( GVHD),UD-HSCT患者在CsA/MTX基础上联合霉酚酸酯(MMF)。平均输注单个核细胞8.1(2.4~13.5)×108/kg,CD34+细胞3.7(2.3~14.7)×106/kg。结果1例患者于移植后第11天因感染死亡尚未获得植入,其余42例患者粒系全部获得重建,41例获得巨核系重建。3例患者获得缓解分别于移植后3.5、5.0和11.0个月晚期植入失败后复发。中性粒细胞>0.5×109/L和血小板>20×109/L的中位时间分别为移植后第10(8~25)天和第14(8~80)天。至随访截止,中位随访17.0(0.4~140.0)个月,存活35例(81.4%),两组中位生存时间均未达到。 UD-HSCT组与Sib-HSCT组相比5年总生存率(87.6%比84.5%)和无失败生存(FFS)率(86.2%比79.5%)差异均无统计学意义(P=0.87、0.64)。年龄≤20岁组和>20岁组5年总生存率分别为92.0%和82.5%,5年FFS率分别为91.0%和77.3%,差异均无统计学意义( P=0.39、0.38)。有8例患者死亡,其中1例UD-HSCT患者于移植后第50天死于移植相关血栓性微血管病( TMA),1例Sib-HSCT患者在移植后第90天死于TMA合并毛细血管渗漏征;3例Sib-HSCT?
Objective To evaluate the efficacies of hematopoietic stem cell transplantation ( HSCT) for severe aplastic anemia ( SAA).Methods A total of 43 SAA patients ( SAA-Ⅰ, n=29;SAA-Ⅱ, n=14) underwent HSCT from 2002 January to 2013 December.There were 22 males and 21 females with a median age of 31 (12-49) years.And 35 patients received HLA-matched sibling HSCT ( Sib-HSCT) while another 8 had unrelated donor HSCT (UD-HSCT).The hematopoietic stem cells were collected from bone marrow (n=10), peripheral blood (n=23) and bone marrow & peripheral blood (n=10).Conditioning regimens were mostly composed of Fludarabine, antihuman thymocyte gloBulin and cyclophosphamide. Cyclosporine and methotrexate ( including mycophenolate mofetil for UD) were offered for preventing graft-versus-host disease ( GVHD ) . The median counts of mononuclear cell and CD34 + stem cell were 8.1(2.4-13.5) ×108/kg and 3.7 ( 2.3 -14.7 ) ×106/kg respectively.Results Hematopoiesis reconstitution was achieved in 42 patients.The median periods for neutrophils to 0.5 ×109/L and platelets to 20 ×109/L were +10 ( +8 -+25 ) days and +14 ( +8 -+80 ) days respectively.The median of survival time was not reached.Overall survival ( OS) and failure-free survival ( FFS) at 5 years had no differences between UD-HSCT and Sib-HSCT groups ( OS:87.6%vs 84.5%, P=0.87;FFS:86.2%vs 79.5%, P=0.64) .The same results also were seen between age ≤ 20 group and >20 group ( OS:92.0%vs 82.5%, P=0.39;FFS:91.0%vs 77.3%, P=0.38).The median follow-up time was 17.0 (0.4-140.0)months.And 8/43 patients died from thrombotic microangiopathy (TMA) (n=1), TMA associated with capillary leak syndrome ( n=1 ) , pulmonary infection ( n=3 ) , acute GVHD of grade Ⅳ(n=1) and unknown causes (n =2).Conclusions Sib-HSCT is preferred for SAA patients under 40 years.Searching of HLA-matched unrelated donor should be performed soon after