脐血造血细胞含量与白血病脐血移植疗效分析

目的分析4711份库存脐血造血细胞含量及探讨脐血造血细胞含量与白血病脐血移植疗效的关系。方法分析4711例库存脐血总有核细胞数(TNC)和CD34+细胞数分布情况,探讨不同的造血细胞输入量、供受者HLA不相合数、受者性别、年龄、体重和疾病类型间植入率和生存率的差异。结果 4711例库存脐血TNC和CD34+细胞中位数分别为1.14×109/kg和4.06×106/kg,按3.7×107/kg有效TNC输入量计算,93.2%脐血可供体重50 kg以下受者移植。89例白血病患者移植后植入75例,植入率为84.3%。中性粒细胞绝对值≥0.5×109/L、血小板≥20×109/L和≥50×109/L的时间分别为移植后17、34和46 d。75例植入病例中,长期无病存活47例,死亡26例,2例复发;急性移植物抗宿主病(GVHD)Ⅰ～Ⅱ度、Ⅲ～Ⅳ度和慢性GVHD发生率分别为54.7%、20.0%、9.3%。影响移植植入率的因素包括受者年龄、TNC和CD34+细胞输入量;影响生存率的因素包括受者年龄、体重和输入CD34+细胞数。结论在无法找到HLA全相合骨髓供者时,可选择脐血作为替代骨髓的造血干细胞来源治疗儿童与成人白血病,TNC和CD34+细胞数仍是选择脐血移植物的参考指标。     

脐带血移植治疗儿童血液病疗效的回顾性分析

目的观察脐带血治疗儿童血液病的治疗效果及预后。方法回顾分析2011年1月至2016年6月期间51例接受脐带血移植患儿的临床资料。结果 51例患儿中,男34例、女17例,中位年龄62个月;恶性血液病32例,非恶性血液病19例。2例在粒细胞未重建时死亡,4例发生原发性植入失败,45例植入成功。粒细胞植入中位时间16天,血小板植入中位时间23天。围植入综合征发生率46.94%,围植入综合征患儿移植后100天内以及长期总生存率(OS)分别为(73.9±9.2)%和(50.2±11.7)%,均低于无围植入综合征患儿的OS 100%,差异有统计学意义(P0.01)。急性移植物抗宿主病(aGVHD)发生率为55.10%,其中II~Ⅲ度aGVHD占28.57%,Ⅳ度aGVHD 26.53%;Ⅳ度aGVHD患儿移植100天内OS为(61.5±13.5)%;Ⅲ和Ⅳ度aGVHD患儿的长期OS分别为(75.0±21.7)%和(44.9±14.1)%,未发生aGVHD患儿的长期OS为(90.2±6.6)%,差异有统计学意义(χ2=14.35,P=0.002)。慢性GVHD(c GVHD)发生率为28.57%;c GVHD患儿的长期OS为(72.7±13.4)%,无c GVHD患儿100%存活。脐血移植后100天内OS(86.0±4.9)%;脐血移植长期OS(77.9±6.3)%,其中恶性血液病为(76.6±7.8)%,非恶性血液病为(79.5±11.3)%。恶性血液病中急性淋巴细胞白血病(ALL)的OS为(87.5±11.7)%,急性髓细胞白血病(AML)为(76.7±10.3)%,骨髓增生异常综合征(MDS)为(33.3±27.2)%。结论脐带血移植是治疗儿童血液病的有效手段,重视围植入综合征的处理,积极防治Ⅲ/Ⅳ度aGVHD和c GVHD是提高脐带血移植疗效的重要策略。     

非血缘相关脐血移植治疗儿童高危白血病的临床观察

目的：非血缘脐血具有快速寻求、容易得到和HLA配型不严格的特点，该文进行了非血缘相关脐血移植（UD-UCBT）治疗儿童恶性白血病的研究并探讨其疗效问题。方法：对6例难治性白血病患儿，包括3例急性淋巴细胞白血病（2例高危CR1，1例标危CR2），2例幼年慢性粒单细胞白血病（1例缓解期，1例加速期）和1例急性髓系白血病（AML- M5，CR1）进行了非血缘相关脐血移植，HLA高分辨1例全相合，1例5个位点相合，1例4个位点相合，3例3个位点相合。预处理选用白消安/环磷酰胺/ATG或全身放疗/环磷酰胺/ATG为主方案。于 0 d 回输脐血，有核细胞中位数为8.51×107/kg，CD34+细胞中位数为1.81×105/kg。预防移植物抗宿主病（GVHD）采用环孢霉素A、甲基泼尼松龙和骁悉或CD25单抗。结果：中性粒细胞绝对值（ANC）≥0.5×109/L和PLT≥20×109/L的中位天数分别是+13 d、+30 d，移植证据均为供者型。4例出现Ⅰ~Ⅲ度GVHD，均控制。随访中位时间12个月，未发生慢性GVHD，现存活4例血型均转为供者型，无复发。结论：脐血提供快速有效的造血干细胞，为治疗儿童白血病提供良好时机，非血缘相关脐血移植能耐受HLA多个位点不相合。急性GVHD发生率也较高，存在移植物抗白血病作用。     

无关血缘脐血移植治疗儿童恶性和非恶性疾病的临床研究

目的 探讨无关血缘脐血移植治疗儿童恶性和非恶性疾病的临床疗效.方法 24例进行非血缘脐血移植的患儿,包括急性淋巴细胞白血病(ALL)8例,急性髓系白血病(AML)4例,幼年慢性粒单细胞白血病(JMML)3例,慢性粒细胞白血病(CML)2例,骨髓增生异常综合征(MDS-RA)2例,急性混合型白血病、石骨症、X连锁肾上腺脑白质营养不良、Ⅵ型黏多糖和慢性肉芽肿各1例.HLA高分辨全相合6例,5个位点相合10例,4个位点相合5例,3个位点相合3例.预处理选用白消安(Bu)/环磷酰胺(CTX)/抗胸腺球蛋白(ATG)或全身放疗(TBI)/CTX/ATG为主方案.6例ALL采用TBI/CTX/ATG,其中2例加鬼臼乙叉苷(VP16),18例采用Bu/CTX/ATG,其中3例JMML加马法兰,1例ALL和1例AML加VP16,3例非恶性疾病加塞替哌.于0 d回输脐血有核细胞中位数为5.26(2.26～13.3)×107/kg,CD34细胞中位数为2.86(0.79～9.8)×105/kg.预防急性移植物抗宿主病(aGVHD)采用环孢素A和甲基泼尼松龙(MP)或骁悉,出现Ⅲ～Ⅳ度aGVHD者,加用CD25单抗.结果 脐血干细胞粒系植入率为91.7%(22/24),1例ALL未植入,1例CML于+130 d排斥;血小板植入率为83.3%(20/24),中性粒细胞≥0.5×109/L中位天数+15(+13～+28)d;血小板≥20×109/L中位天数+38(+25～+100)d.7例出现Ⅰ～Ⅱ度aGVHD;1例出现Ⅲ度aGVHD,给予MP均控制;2例出现Ⅳ度aGVHD,给予MP及CD25单抗后未控制.随访中位时间28(9～96)个月,均未发生慢性GVHD(cGVHD).现存活14例血型均转为供者型;死亡10例,其中原发病复发2例(急变期CML和婴儿型ALL各1例),Ⅳ度aGVHD合并感染2例,6例感染(CMV间质性肺炎4例,霉菌性肺炎2例).结论 无关血缘脐血是快速的造血干细胞来源之一,为恶性疾病患儿争取了治疗时间;因其cGVHD发生率低,对非恶性疾病患儿的治疗更具优势.     

幼年粒单细胞白血病造血干细胞移植疗效初探

目的探讨造血干细胞移植治疗幼年粒单细胞白血病(JMML)的疗效。方法 5例JMML患儿接受无关供者脐血造血干细胞移植治疗。预处理均采用Bu/Cy+Mel+ATG方案:马利兰(0.8～1.0)mg/kg,每6小时1次共用16次(-8d～-5d);环磷酰胺60mg/(kg·d)用2d(-4～-3d);马法兰140mg/m2用1次(-2d):抗胸腺细胞球蛋白2.5mg/(kg·d)连用4d(-4～-1d)。GVHD预防采用CsA+MP±MMF。结果 5例成功植入,3例复发,1例复发后死于卡氏肺囊虫肺炎,1例死于CMV感染相关间质性肺炎,1例长期无病存活。结论 5例JMML移植初步治疗结果不满意,移植失败主要原因为白血病复发。为减少复发,今后需进一步改进移植方法 ,包括选择其他供体、改进GVHD预防方案。     

脐带造血干细胞移植治疗儿童恶性或非恶性疾病死亡分析

目的 探讨脐带造血干细胞移植治疗儿童恶性或非恶性疾病后患儿的常见死亡原因.方法 对本院采用脐带造血干细胞移植治疗的28例儿童恶性疾病或非恶性疾病患儿的临床资料进行回顾性分析,包括24例恶性疾病和4例非恶性疾病.3例行同胞脐血干细胞移植,25例行异基因脐带造血干细胞移植,其中HLA高分辨全相合、5个位点相合各10例,4个位点相合5例,3个位点相合3例.预处理均采用清髓性方案,7例ALL采用全身放疗/环磷酰胺/抗胸腺Ig,余21例采用白消安/环磷酰胺/抗胸腺Ig.于0 d回输脐血有核细胞中位数为8.51(4.27～12.2)×107/kg,CD34+细胞的中位数为1.81(1.27～2.31)×105/kg.预防急性移植物抗宿主病均采用环孢素和小剂量甲泼尼龙,其中3例另加霉酚酸酯,1例加CD20单抗. 随访4～86个月.结果 28例行脐血造血干细胞移植的恶性或非恶性疾病儿童,存活16例(57.1%),死亡12例(42.9%).死于感染7例(25.0%),其中间质性肺炎、真菌感染性肺炎各3例,病毒性肺炎1例;死于复发3例(10.7%);死于急性移植物抗宿主病2例(7.1%).结论 儿童恶性疾病的原发病复发是脐带造血干细胞移植后常见的死亡原因之一,感染是儿童恶性疾病和非恶性疾病行脐血造血干细胞移植后另一常见死亡原因.     

65例中国非亲缘性脐血造血干细胞移植的回顾研究

目的1998—2004年,广州脐血库向国内25家移植中心提供非亲缘性脐血治疗恶性及非恶性肿瘤性疾病患者65例,对其进行回顾性分析,探讨与非亲缘性脐血移植密切相关的影响因素。方法脐带血均采自广州市妇婴医院正常分娩的足月顺产产妇,脐血分离、冻存、复温方法参照纽约脐血库的标准及相关文献;选择脐血的依据是HLA相合程度及有核细胞数量。结果65例接受非亲缘性脐血移植的病例中,白血病49例,遗传缺陷性疾病16例;男性42例,女性23例;受者中位年龄10岁(1~33岁);中位体重27kg(10~67kg);HLA-A、B,DRB1匹配全相合9例,1个位点不合43例,2个位点不合13例;总有核细胞(TNC)中位输入量5.7×107/kg[(1.84~20.00)×107/kg]。移植后植入50例有核细胞总数(ANC>500/μl),植入的中位时间为17.5d(7~44d),植入率77%;41例受体发生GVHD,发生率为63%。30例长期存活(无病生存时间>365d),无病存活率为61%。结论非亲缘性脐血移植具有良好的临床应用前景。     

无关脐血移植治疗儿童高危急性白血病临床研究

目的　探讨无关脐血移植 (UD UCBT)治疗儿童高危急性白血病的疗效及合并症。方法　采用UD UCBT治疗儿童高危急性白血病 5例 ,其中急性淋巴细胞白血病 (ALL) 2例 ,急性混合性白血病 (HAL) 1例 ,慢性粒细胞白血病 (CML)急淋变 1例 ,非霍奇金淋巴瘤 (Ⅳ期 )第 2次完全缓解 (CR2 ) 1例。人类白细胞相关抗原(HLA) 5 / 6个位点相合 3例 ,6 / 6个位点相合 2例。输入脐血 (UCB)有核细胞数为 (4 9～ 11 78)× 10 7/kg。结果　 5例患儿中 4例获得造血重建。白细胞恢复至 1 0× 10 9/L以上所需时间为 13～ 18d ,与异基因骨髓移植无明显差别 ;但血小板恢复延迟 ,恢复至 2 0× 10 9/L以上所需时间为 4 5～ 6 0d。 4例获得造血重建患儿中 ,2例发生Ⅰ度急性移植物抗宿主病 (aGVHD) ,Ⅱ度和Ⅲ度aGVHD各 1例。aGVHD出现较早 (在脐血输注后 4～ 10d)。但增加环孢素A(CsA)剂量 ,加用甲基泼尼松龙治疗 ,aGVHD容易控制。结论　UD UCBT可有效重建造血 ,但血小板恢复延迟。严重aGVHD的发生与HLA不相合位点数目无关。在疾病的恢复稳定状态进行移植治疗 ,可望获得更好的远期疗效。     

CD25抗体预防移植物抗宿主病在儿童白血病半匹配骨髓移植中的应用

目的　探讨CD2 5抗体用于预防儿童白血病半匹配未去除T细胞骨髓移植重度移植物抗宿主病 (GVHD)的疗效。方法　 10例儿童白血病患者接受人类白细胞抗原 (HLA) 2～ 3个位点不合半匹配骨髓移植 ,移植方法除了供者用粒细胞集落刺激因子 (G CSF)及受者应用环孢素A(CSA)、氨甲蝶呤 (MTX)、抗胸腺细胞球蛋白 (ATG ,FreseniusHemocare ,Germany)和霉酚酸酯 (MMF)预防GVHD的综合措施外 ,加用抗CD2 5单克隆抗体 (舒莱 ,novartispharmaswitzerland)预防GVHD ,剂量各为 2 0mg ,在移植前 2h和移植后第 4天应用 ,观察移植后的疗效 ,移植结果与前期未用CD2 5抗体移植组作回顾性比较。结果　 10例移植后均获造血重建 ,粒细胞 >0 5× 10 9/L的中位天数是 19d ,血小板大于 2 0× 10 9/L的中位天数是 2 2d ,骨髓植活直接证据检测证实为完全供者造血。无一例发生急性Ⅱ～Ⅳ度GVHD ,未用CD2 5抗体对照组 8例中发生急性Ⅱ～Ⅳ度GVHD有 4例 ,差异有显著性(P =0 0 14 7)。可评价慢性GVHD的 8例均发生慢性GVHD ,为局限性慢性GVHD。中位随访 12个月 (范围 9～ 2 4个月 ) ,2例为移植相关死亡 ,1例移植后 14个月因复发死亡 ,实际无病生存率是70 %。结论　儿童半匹配未去除T细胞骨髓移植中应用舒莱 ,明显降低急性重症GVHD发生 ,临床     

重型β-珠蛋白生成障碍性贫血异基因造血干细胞移植后移植物抗宿主病

目的 探讨异基因造血干细胞移植治疗重型β-珠蛋白生成障碍性贫血(地贫)并急(慢)性移植物抗宿主病(GVHD)的规律及预防方案.方法 分析本院1997-2004年行58次异基因造血干细胞移植52例重型地贫患儿资料.预处理方案以白消安加环磷酰胺加抗人胸腺免疫球蛋白为主,依据人类白细胞抗原(HLA)配型情况等分别加用氟达拉滨或全身放疗.GVHD预防方案:环孢素(CsA)或他克莫司(FK-506)加甲氨蝶呤(MTX)或霉酚酸脂(MMF).观察比较不同移植类型、骨髓来源等GVHD的发生情况及预后.结果 随访1～104个月,GVHD总发生率为72.7%(24例),其中21例为急性GVHD(占87.5%),3例为慢性GVHD(12.5%);GVHD临床分度为I、Ⅱ、Ⅲ～Ⅳ度,发生率分别为27.3%(9例)、27.3%(9例)和18.1%(6例).非亲缘或单倍体供者移植组GVHD发生率为66.7%,外周血造血干细胞移植(PBSCT)者GVHD发生率为100%.结论 地贫移植后GVHD发生以急性为主,临床分度以I、Ⅱ度为主,非亲缘供者、单倍体移植组GVHD发生率高,尤以PBSCT发生率高;CsA加MMF是比较有效的预防方法.     

Outcome of allogeneic hematopoietic stem cell transplantation for children with acute myelogenous leukemia in second complete remission: Single center experience

Abstract: We reviewed 26 consecutive patients with AML who were transplanted in second CR2 between 1994 and 2005. The most common conditioning regimen was CY and TBI. Median age at transplant was 8.9 yr (range 2.2–18.2). Nine patients received related donor, 16 patients received unrelated donors, and one patient received unrelated cord stem cells. Acute grade III–IV and chronic extensive GVHD occurred in eight (30%) and nine (35%) patients, respectively. Six patients (23%) relapsed, four of them died. Six patients (23%) died from TRM. Estimate of three‐yr EFS was 0.53 (95% CI; 0.34–0.72). Including the two relapsed patients who were salvaged by DLI and second transplantation, three‐yr OS was 0.61 (95% CI; 0.41–0.78) with a median follow‐up of three and a half yr (range 1.5–11.2 yr). When entering remission, children with relapsed AML have a reasonable survival with HSCT, but relapse and TRM remain a concern.     

单倍体造血干细胞移植治疗儿童重型β-地中海贫血

目的：目前仅有30％左右的重型β-地中海贫血患者能找到HLA全相合的同胞供者,使造血干细胞移植治疗该病受到限制。该研究通过探讨单倍体造血干细胞移植治疗儿童重型β-地中海贫血的疗效,希望能够拓展供者源。方法：采用单倍体脐血或骨髓对10例重型β-地中海贫血患儿进行11例次移植。使用以羟基脲、氟达拉滨、白消安、环磷酰胺、抗胸腺细胞球蛋白为基础的预处理方案。结果：6例患者获长期稳定植入并脱离红细胞输注;2例短暂植入后排斥,其中1例恢复地中海贫血状态,另1例在移植早期死亡;1例行2次移植均未植入并出现移植后再障;1例未植入,出现再障,1年后恢复地中海贫血状态。8例植入者均发生急性移植物抗宿主病,仅1例发展为皮肤局限性慢性移植物抗宿主病。随访57.1（2.5～85.1）月,总体生存率90%,无病生存率为60%。结论：单倍体造血干细胞移植治疗儿童重型β-地中海贫血能长期重建造血,在无HLA相合同胞供体时,可以作为造血干细胞移植治疗的一种选择。［中国当代儿科杂志,2009,11（7）：546-548］     

Engraftment syndrome emerges as the main cause of transplant-related mortality in pediatric patients receiving autologous peripheral blood progenitor cell transplantation

The authors examined data from 166 children who received autologous peripheral blood progenitor cell (PBPC) transplantation to ascertain the incidence of early transplant-related mortality (TRM) and the contributing risk factors. Eleven patients (6.6%) (6 boys, 5 girls) died within 180 days following PBPC infusion. The median age was 4 years (range 2-17). The overall probability of TRM was 6.9 +/- 2% at day +180. On univariate analysis, the status of disease at transplantation (complete remission vs. not in complete remission) was identified as the only pretransplant significant predicting factor for TRM (14% of patients who were not in complete remission died within 180 days after PBPC infusion, whereas only 2% of patients in complete remission died) (relative risk [RR] 1.13, 95% confidence interval [CI] 1.01-1.26, P = 0.01). Age, gender, conditioning, and number of CD34+ cells infused were not significantly associated with TRM. In the postinfusion phase, patients who developed multiorgan dysfunction during the neutropenic period, especially when the lung was the first failing organ (RR 16.1, 95% CI 7.16-36.18, P = 0.0001), and those with engraftment syndrome (RR 2.81, 95% CI 1.49-5.24, P = 0.001) had an increased risk for TRM. On multivariate analysis, development of engraftment syndrome was the only significant variable that influenced TRM. In conclusion, the authors found for the first time that engraftment syndrome emerges as the main cause of TRM after autologous PBPC transplantation in children with malignancies.     

Risk factors in pediatric stem cell transplantation for leukemia

To investigate which factors impact on survival, relapse, relapse free survival, transplant-related mortality (TRM) and graft-versus-host disease (GVHD) in children who undergo allogeneic stem cell transplantation, we included all 181 children transplanted due to leukemia at our unit. At the end of follow up 54% of the patients were alive, 27% had died due to relapse while 19% had died of other causes. Survival was similar in recipients of related (55%) and unrelated grafts (48%). Risk factors identified in univariate analysis were brought into a multivariable analysis. However, an unrelated donor was not identified as a risk factor for any of the five end-points analysed. A donor positive for three to four herpes viruses increased the risk of acute GVHD, TRM and death. A female to male transplant increased the risk of TRM, particularly if combined with a mismatch. Early stage of disease as well as human leukocyte antigen (HLA)-matching independently predicted survival. The risk of relapse increased after 1992. Chronic GVHD independently decreased the risk of relapse (relative risk RR, 0.39) and death (RR 0.42). We conclude that in children with leukemia other specific donor characteristics such as HLA-matching, gender, parity, and exposure to herpes viruses were more important for outcome than relationship.     

Low risk of graft-versus-host disease with transplantation of CD34 selected peripheral blood progenitor cells from alternative donors for Fanconi anemia

OBJECTIVES: Transplant results for Fanconi anemia with alternative-donor bone marrow transplantation currently entail a high incidence of graft failure and graft-versus-host disease (GVHD). The authors sought to improve outcome in this disease category with alternative donors with a 5-6/6 antigen match by transplantation of highly purified peripheral blood progenitor cells (PBPC) using the Isolex 300i v2.5 device as a means of T-cell depletion to lessen the risk of GVHD. METHODS: All Fanconi anemia patients (n = 8) received the same preparative regimen that included total body irradiation (450 cGy), Cytoxan (20 mg/kg), ATGAM, and fludarabine (120 mg/m2). The cell dose of CD34+ cells was a median of 11.4 x 10(6)/kg; the cell dose of CD3+ cells was a median of 1.9 x 10(4)/kg. Primary engraftment was rapid in all patients, with neutrophil recovery occurring at a median of day 10 and platelet count more than 50,000 on day 27. Two patients subsequently had secondary graft failure. Despite lack of cyclosporine GVHD prophylaxis, only two patients developed acute GVHD (both grade I), and no patients developed chronic GVHD. Three patients died: one at day 59 secondary to disseminated fungal infection, the second at day 196 during a second transplant, and the third at day 202 due to graft failure. With a median follow-up of 12 months, the overall survival was 58 +/- 18%. CONCLUSIONS: Transplantation of CD34-selected PBPCs from alternative donors results in a very low risk of GVHD in patients with Fanconi anemia.     

ALLOGENEIC HEMATOPOIETIC STEM CELL TRANSPLANTATION IS SUPERIOR TO IMMUNOSUPPRESSIVE THERAPY IN INDIAN CHILDREN WITH APLASTIC ANEMIA—A SINGLE-CENTER ANALYSIS OF 100 PATIENTS

The authors compared the outcome in 100 children (61 boys, 39 girls; median age of 10.1 ± 3.4 years) with aplastic anemia who underwent either immunosuppressive therapy (IST; n = 70) or hematopoietic stem cell transplantation (HSCT; n = 30) between 1998 and 2007. Conditioning regimes for HSCT were a combination of either cyclophosphamide (Cy) with antilymphocyte globulin (ALG) or fludarabine (Flu) with Cy or busulfan (Bu) ± antithymocyte globulin (ATG). Stem cell source was bone marrow in 20 and peripheral blood stem cells (PBSCs) in 10. Patients undergoing IST received either equine ALG or ATG in combination with steroids and cyclosporine. Primary engraftment was seen in 25 children (83.3%), with acute graft-versus-host disease (aGvHD) in 5 (16.6%). The day 100 transplant-related mortality (TRM) was 30% and at a median follow up of 36 months (range: 6–197), the overall and disease-free survival is 70%. Among children who received IST, 60 children received ALG while 10 received ATGAM. Responses were seen in 27 children (43.5%), which was complete (CR) in 12 and partial (PR) in 15. At a median follow up of 38 months (range: 1–84), the overall survival is 37.1%, with 81.4% survival among responders and <10% survival among non-responders. HSCT would be the treatment of choice in children with severe aplastic anemia who have a human leukocyte antigen (HLA)-matched related donor and is superior to IST in this series from India.     

异基因造血干细胞移植治疗儿童慢性粒细胞性白血病的疗效分析

目的：研究异基因造血干细胞移植（allogeneic hematopoietic stem cell transplantation, allo-HSCT）治疗儿童慢性粒细胞性白血病（chronic myelogenous leukemia, CML）的治疗效果,寻找可能的影响因素,以期改善患者预后。方法：对接受allo-HSCT治疗的20例儿童CML患者,分别从年龄、性别、诊断至移植间隔时间、供受体HLA配型相合情况、移植时患儿疾病状态以及急慢性移植物抗宿主病（gost-v-host disease, GVHD）等多种因素进行疗效分析。结果：截止至随访日期,20例患者中,13例无病存活,7例死亡,其中4例死于急性重度GVHD,2例死于慢性GVHD及其并发症,1例死于移植后复发,3年总无病生存率为（64.6±1.1%）。单因素分析显示年龄是影响儿童CML治疗预后最重要的因素之一（P0.05）。多因素logistic回归分析也进一步证明仅年龄是影响预后的因素（P<0.01）。各种严重急慢性 GVHD是引起患者死亡最重要的原因。选择10位点全相合的供体进行移植治疗预后好。结论：allo-HSCT能有效治疗儿童CML,对于年龄≥10岁的CML患儿宜早期行allo-HSCT移植治疗,且尽可能选择10位点全相合的供体进行移植,积极防治GVHD,改善CML患儿移植治疗后的转归。