1、双重移植临床疗效观察Haplo-SCT vs CBTu 由于供体的易获得性,单倍型供体移植和脐血移植近年获得了较快发展,成为替代供体的主要选择u Haplo-SCT和CBT分别存在各自的优势,但也存在较难克服的困难Haplo-SCTCBTHigh GVLFast engraftHigh GVHDHigh NRMHigh GVLLow GVHDSlowly engraftGraft failureDual TransplantHaplo-SCTCBT+=DualTransplant该模式称为该模式称为双重移植双重移植,或第三方(,或第三方(TPD)造血干细胞联合输注)造血干细胞联合输注国外双重移
2、植研究多个研究提示,双重移植可实现两者的优势互补,弥补对方缺陷 TCD条件下临床研究双重移植 vs 同胞移植Sebrango A,et al.Best Pract Res Clin Haematol,2010,23:259-274.双重移植:49例 vs 同胞全相合移植:39例Comparable outcomesSebrango A,et al.Best Pract Res Clin Haematol,2010,23:259-274.aGVHDP=0.018RelapseP=0.069TRMP=0.31 除aGVHD外,双重移植后的复发率和TRM与同胞全相合移植相比均无显著差异Compara
3、ble survivalSebrango A,et al.Best Pract Res Clin Haematol,2010,23:259-274.P0.05P0.055年OS:61%vs 50%5年DFS:52%vs 38%双重移植双重移植同胞移植同胞移植两者OS及DFS均无统计学差异双重移植 VS 无关供体移植Kwon M,et al.BBMT,2013,19:143-149.Comparable Results againKwon M,et al.BBMT,2013,19:143-149.DFSRelapseNRMOSIIIVaGVHD中重度cGVHD国内研究u国内研究特点:Unmani
4、pulated graft T cell depletion Enrichment of CD34+cells Expansion of CB stem cellsu早期研究结果:北京:显著降低中重度aGVHD 四川:有降低aGVHD趋势,但差异不显著Lu DP,et al.ASH Meeting Abstract,陈心传,等.中华器官移植杂志.2012.Our Previous Report20%0.327%19.78%1%IIIVaGVHD100dcGVHD1yRI1yTRM1y19.8%1%16.5%0.5%20%0.33%19.78%1%III-IVaGVHD100dcGVHD1yRI
5、1yTRM1y19.8%1%16.5%0.5%u 前瞻性单臂研究u 纳入50例恶性血液病Chen J,et al.BMT,2014,49:206-211生 存Chen J,et al.BMT,2014,49:206-2111年OS:78.6%7.6%1年DFS:64.0%11%优于本中心单倍型移植历史对照Recent UpdateCharacteristicsu 2011年年1月至月至2014年年12月:共纳入月:共纳入219例双重移植患者例双重移植患者u 中位年龄:中位年龄:26岁(岁(15-60岁)岁)Male 62%Female 38%Donor&Graft单倍型供体与移植物脐血HLA配
6、合情况同期接受单倍型供体移植的同期接受单倍型供体移植的176例患者作为平行对照例患者作为平行对照(基线水平无显著差异)OS&PFSdual-SCTdual-SCThaplo-SCThaplo-SCTOSPFSTRM&Relapse Incidencedual-SCTdual-SCThaplo-SCThaplo-SCTTRMRIGVHDdual-SCTdual-SCThaplo-SCThaplo-SCTII-IV aGVHDEcGVHDWho is the best donor for dual-SCT?单倍型供体的选择u北大人民医院单中心研究u11年移植病例(2002-2013)u1210例血
7、液肿瘤患者Wang Y,et al.Blood,2014,124:843-850单倍型供体的选择策略是否同样适用于双重移植?Wang Y,et al.Blood,2014,124:843-850供体年龄30 years oldTRMRIP=0.78830 years old30 years oldP=0.878供体年龄对生存的影响30 years oldOSPFSP=0.56130 years old30 years old30 years oldP=0.578亲缘关系MotherDaughterTRMRIP=0.440P=0.440FatherSiblingSonFatherSonMothe
8、rSiblingDaughter亲缘关系对生存的影响MotherDaughterOSPFSP=0.480P=0.400FatherSiblingSonFatherSonMotherSiblingDaughterFather or Mother?MaternalPaternalTRMRIP=0.501MaternalPaternalP=0.095Father or Mother?MaternalPaternalOSPFSP=0.821MaternalPaternalP=0.638移植物类型BMPBTRMRIP=0.841P=0.578MixedBMPBMixedBMMixedPBBMMixed移
9、植物类型对生存的影响OSPFSP=0.835P=0.831PBBMMixedBMPBMixedu单倍型供体移植中选择供体的策略未能在双重移植中得到完全验证u那么,何种因素会影响双重移植的预后?MNC Count in Haplo-graftTRMRIP=0.008P=0.806MNC12108/kgMNC12108/kgMNC12108/kgMNC12108/kgMNC Count in Haplo-graftII-IV aGVHDExtensive cGVHDP=0.041P=0.520MNC12108/kgMNC12108/kgMNC12108/kgMNC12108/kgMNC Count
10、 in Haplo-graftOSPFSP=0.007P=0.010MNC12108/kgMNC12108/kgMNC12108/kgMNC12108/kg低细胞计数是否影响植入?MNC Count in Haplo-graftNEPLTP=0.789P=0.496MNC12108/kgMNC12108/kgMNC12108/kgMNC12108/kg 伴随低MNC计数的低CD34+细胞计数,是否影响患者预后?CD34+Cell Count in Haplo-graftTRMRIP=0.389P=0.586CD34+cell3106/kgCD34+cell 3106/kgCD34+cell31
11、06/kgCD34+cell 3106/kgCD34+Cell Count in Haplo-graftOSPFSP=0.460P=0.626CD34+cell3106/kgCD34+cell 3106/kgCD34+cell3106/kgCD34+cell 3106/kg脐血应如何选择?脐血中ANC对预后的影响OSPFSP=0.537P=0.759ANC1.8107/kgANC1.8107/kgANC1.8107/kgANC1.8107/kg脐血中CD34+Cell对预后的影响OSPFSP=0.371P=0.295CD34+cell0.5106/kgCD34+cell 0.5106/kg脐血
12、随便选?脐血HLA配合位点对预后的影响TRMRIP=0.023P=0.1344/6相合5-6/6相合5-6/6相合4/6相合脐血HLA配合位点对预后的影响OSPFSP=0.071P=0.5864/6相合5-6/6相合5-6/6相合4/6相合4/6相合5-6/6相合初步结论u 单倍型移植物中的MNC计数对双重移植的预后具有显著影响,但不影响植入u 单倍型移植物中CD34+细胞计数不会影响患者预后u 脐血配合位点的重要性大于细胞计数可能的作用机制:母体微嵌合假说Van Rood J,et al.PNAS USA,2012,109:2509-2514血-胎盘屏障IPAsTBTBsensitizedTB胎儿循环胎儿循环母体循环母体循环TTTBBBTHighly sensitized maternalmicrochimeric cells下一步工作u补充病例数,均衡亚组间分布u完善资料进行多因素分析u探明单倍型供体干细胞与脐血干细胞之间的作用机制u开展设计良好的前瞻性随机对照临床试验