机构地区:[1]苏州大学附属第一医院血液科江苏省血液研究所卫生部血栓与止血重点实验室,215006
出 处:《中华器官移植杂志》2013年第10期611-615,共5页Chinese Journal of Organ Transplantation
基 金:国家自然科学基金面上项目(81270645);江苏省自然科学基金面上项目(BK2012627);江苏省高校自然科学研究面上项目(11KJB320015);江苏省卫生厅科技项目(H201125);江苏省临床医学中心资助(ZX201102)
摘 要:目的分析无关供者造血干细胞移植(HSCT)联合伊马替尼治疗Ph+急性淋巴细胞白血病(PhtALL)的预后及其影响因素。方法2002年2月至2012年2月间,25例行无关供者HSCT的Ph+-ALL患者纳入研究,其中移植前处于第1次完全缓解(CRl)期18例,≥第2次完全缓解(CR2)期7例;BCR/ABL融合基因为MajorBCR/ABL型(M型)9例,minorBCR/ABL型(m型)16例。移植前均给予伊马替尼治疗。术后采用环孢素A、甲氨蝶呤、吗替麦考酚酯及抗胸腺细胞球蛋白预防移植物抗宿主病(GVHD)。结果中位随访时间为20.5个月,HSCT后中性粒细胞和血小板植活的中位时间分别是12d(10--20d)及12.5d(10--36d)。移植后30d所有患者均为完全供者嵌合型。2年的总体存活率(OS)和无白血病存活率(LFS)分别为(55.3+10.9)%和(49.1+12.2)%,2年的累计复发率(RI)和急性GVHD的累计发生率分别为(29.6+9.4)%和(48.0+10.6)%。单因素分析提示,CRl的患者OS明显高于非CRl患者(77.1%和20%,P=0.028),LFS也高于非CRl患者(74.1%和0,P=0.030);BCR/ABL融合基因M型的患者OS比m型患者低(22.2%和80.2%,P=0.010);LFS也比m型患者低(13.9%和78.3%,P=0.015);而年龄、性别、初诊白细胞数、预处理方案、干细胞来源、HLA相合情况、急性GVHD等对生存无明显影响。多因素分析提示,移植前缓解状态及BCR/ABL融合基因类型是OS的危险因素[P=0.038,Exp(B)=3.823;P=0.023,Exp(B)=4.8291。结论移植前缓解状态及BCR/ABL融合基因类型是影响无关供者HSCT预后的主要因素,患者处于CRl期进行移植获得的效果更佳,应密切监测融合基因M型患者移植后状态。[Abstract] Objective To analyze prognostic factors for the clinical outcome of unrelated donor hematopoietic stem cell transplantation (URD-HSCT) in patients with Philadelphia chromosome- positive acute lymphoblastic leukemia (Ph*-ALL) following imatinib-based therapy. Method From February 2002 to February 2012, 25 patients with Ph~ -ALL receiving URDHSCT were enrolled in the study. There were 17 cases in the first CR (CR1), and 8 cases beyond CR2. Nine patients expressed major BCR/ABL (M) and 16 expressed minor BCR/ABL (m). All the patients were administrated with imatinib before transplantation. Graft versus host disease (GVHD) prophylaxis protocol included cyclosporine A (CSA) , short term methotrexate (MTX), antithymocyte globulin (ATG) and mycophenolate mofetil (MMF). Results The median time of ANC 0. 5 ×109/L was 12 (10-20) days, and that of PLT 120 × 10^9/L was 12 (10-36) days. Thirty days after URDHSCT, all patients achieved full donor chimerism. The median follow-up duration post-transplantation was 20. 5 (3 to 93) months. The 2-year overall survival (OS) and leukemia-free survival (LFS) was (55.3 ± 10. 9) % and (49. 1 ± 12. 2) %, respectively. The cumulative incidence of relapse and aGVHD was (29. 6 ± 9. 4) % and (48.0 ± 10. 6) %, respectively. The uninvariate analysis revealed that the OS and LFS were higher in CR1 group pre-HSCT than in non-CR1 group (77. 1% vs. 20%, P = 0.028; 74. 1% vs. 0, P = 0. 030), lower in major BCR/ABL than in minor BCR/ABL group (22. 2% vs. 80.2%, P= 0. 010; 13.9% vs. 78.3%, P = 0. 015). The median age at HSCT, gender, WBC at diagnosis, conditioning regimen, stem-cell source and HLA typing didn't significantly influence the outcome of URD-HSCT. The multivariate analysis revealed that both the status of disease Pre-HSCT and BCR/ABL subtype were the unfavorable factors for OS [P = 0. 038, Exp(B) = 3. 823; P = 0. 023, Exp(B) = 4. 829]. Conclusion The status of disease Pre-HSCT a
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