中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (1): 1-6.doi: 10.12307/2023.749

• 造血干细胞 hematopoietic stem cells •    下一篇

CD34+细胞数对单倍体造血干细胞移植治疗恶性血液病的影响

彭英楠,边志磊,张素平,李  丽,曹伟杰,万鼎铭   

  1. 郑州大学第一附属医院血液科造血干细胞移植中心,河南省郑州市   450052
  • 收稿日期:2022-11-01 接受日期:2022-12-26 出版日期:2024-01-08 发布日期:2023-06-28
  • 通讯作者: 万鼎铭,博士,教授,主任医师,郑州大学第一附属医院血液科造血干细胞移植中心,河南省郑州市 450052
  • 作者简介:彭英楠,女,1997年生,河南省洛阳市人,汉族,郑州大学在读硕士,主要从事造血干细胞移植及移植相关并发症研究。
  • 基金资助:
    河南省自然科学基金(222300420068),项目负责人:边志磊

Effect of CD34+ cell dose on haploidentical hematopoietic stem cell transplantation for treating malignant hematological diseases

Peng Yingnan, Bian Zhilei, Zhang Suping, Li Li, Cao Weijie, Wan Dingming   

  1. Hematopoietic Stem Cell Transplantation Center, Department of Hematology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • Received:2022-11-01 Accepted:2022-12-26 Online:2024-01-08 Published:2023-06-28
  • Contact: Wan Dingming, MD, Professor, Chief physician, Hematopoietic Stem Cell Transplantation Center, Department of Hematology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • About author:Peng Yingnan, Master candidate, Hematopoietic Stem Cell Transplantation Center, Department of Hematology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • Supported by:
    Henan Natural Science Foundation, No. 222300420068 (to BZL)

摘要:


文题释义:

CD34+细胞:CD34是一种高度糖基化的表面抗原,优先表达于造血干细胞/祖细胞上。在造血干细胞移植治疗过程中,CD34分子作为筛选、计数造血干细胞的标志物已广泛应用于临床。使用这种积极选择的造血干细胞可以实现成功移植。

单倍体造血干细胞移植:单倍体造血干细胞移植是异基因造血干细胞移植的一种类型,单倍体相合是指供受者仅有一条染色体单体相合,即供者与受者的HLA位点有一半相合。几乎所有患者至少有一个单倍体相合供者。


背景:单倍体造血干细胞移植与较高的植入功能不良相关,因此经常要求更高的CD34+细胞数量,但现有研究关于异基因造血干细胞移植CD34+细胞剂量和研究终点关系的结论是有争议的。

目的:探究CD34+细胞数对单倍体造血干细胞移植治疗恶性血液疾病临床结果的影响。
方法:纳入2019年1月至2021年12月期间于郑州大学第一附属医院造血干细胞移植中心行单倍体造血干细胞移植的恶性血液病患者,总计135例。结合既往研究结果及移植中心经验,以CD34+细胞数5.0×106/kg为截止点,将队列分为2组。评估两组的移植物植入情况、复发率及非复发死亡率、总生存期和无进展生存期等相关临床指标。

结果与结论:①CD34+细胞剂量与血小板的植入相关,高剂量组血小板的植入时间早于低剂量组(14 d vs. 16 d,P=0.013)。②两组患者3年总生存期无显著差异(67.5% vs. 53.8%,P=0.257);两组间的无进展生存期也无显著性差异(65.6% vs. 44.2%,P=0.106),但根据疾病风险指数(DRI)进行分层分析后发现低危患者高剂量组的3年无进展生存期较低剂量组升高(72.0% vs. 49.3%,P=0.036)。③高剂量组3年累积复发率小于低剂量组(16.0% vs. 33.5%,P=0.05)。④两组100 d内非复发死亡率高剂量组大于低剂量组,但无显著差异(17.3% vs. 6.7%,P=0.070);进行分层分析发现,高危患者中高剂量组100 d内非复发死亡率明显高于低剂量组(20.0% vs. 3.3%,P=0.046)。⑤综上所述,输注> 5.0×106/kg的CD34+细胞可促进血小板早期植入,可改善移植中低危风险患者的3年无进展生存期,并且降低移植后累积复发率;但在高危患者中,高剂量CD34+细胞导致移植后100 d内的非复发死亡率增高,考虑可能与移植后早期重度急性移植物抗宿主病的发生增多相关,因此考虑对回输高剂量CD34+细胞的患者应加强移植物抗宿主病的监测。

https://orcid.org/0000-0003-4931-3596 (万鼎铭);https://orcid.org/0000-0002-9133-0085 (彭英楠) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: CD34+细胞, 单倍体造血干细胞移植, 恶性血液病, 总生存, 无进展生存, 复发, 非复发死亡

Abstract: BACKGROUND: Haploidentical hematopoietic stem cell transplantation is associated with a higher rate of graft rejection and therefore often requires a higher CD34+ cell dose, but the findings reported in existing studies regarding the relationship between CD34+ cell dose and study endpoints after allogeneic hematopoietic stem cell transplantation are controversial.  
OBJECTIVE: To investigate the effect of CD34+ cell dose on clinical outcomes of haploidentical hematopoietic stem cell transplantation for malignant hematological diseases.
METHODS: 135 patients who underwent haploidentical hematopoietic stem cell transplantation at Hematopoietic Stem Cell Transplantation Center, Department of Hematology, First Affiliated Hospital of Zhengzhou University between January 2019 and December 2021 were included. Combining the results of previous studies and our center’s experience, the cohort was divided into two groups using a CD34+ cell count of 5.0×106/kg as the cut-off point. Clinical outcomes related to graft implantation, relapse incidence, non-relapse mortality, overall survival and progression-free survival were evaluated in both groups.  
RESULTS AND CONCLUSION: (1) CD34+ cell dose correlated with platelet engraftment, with platelets implanted earlier in the high-dose group than in the low-dose group (14 days vs. 16 days, P=0.013). (2) There was no significant difference in 3-year overall survival between the two groups (67.5% vs. 53.8%, P=0.257); nor was there a significant difference in progression-free survival between the two groups (65.6% vs. 44.2%, P=0.106), but stratified analysis based on disease risk index revealed an association with elevated 3-year progression-free survival in the high-dose group among low-risk patients (72.0% vs. 49.3%, P=0.036). (3) The cumulative 3-year relapse incidence was smaller in the high-dose group than in the low-dose group (16.0% vs. 33.5%, P=0.05). (4) The rate of non-relapse mortality within 100 days was greater in the high-dose group than in the low-dose group, but there was no significant difference (17.3% vs. 6.7%, P=0.070); stratified analysis revealed that non-relapse mortality within 100 days was significantly higher in the high-dose group than in the low-dose group (20.0% vs. 3.3%, P=0.046). (5) In conclusion, CD34+ cell doses >5.0×106/kg promote early platelet implantation, improve 3-year progression-free survival in low-risk patients at transplantation and reduce the cumulative relapse incidence. However, in high-risk patients, high-dose CD34+ cells result in increased non-relapse mortality within 100 days after transplantation, which is considered to be possibly associated with an increased occurrence of severe acute graft versus host disease in the early post-transplantation period. Therefore, it is considered that graft versus host disease monitoring should be enhanced in patients who transfused high-dose CD34+ cells.

Key words: CD34+ cell, haploidentical hematopoietic stem cell transplantation, malignant hematological disease, overall survival, progression-free survival, relapse, non-relapse mortality

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