对于严重的状细胞表型,非骨髓化HLA匹配的兄弟同胞全源造血干细胞移植
Matthew M Hsieh1, Courtney D Fitzhugh1, R Patrick Weitzel1
1Molecular and Clinical Hematology Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland2National Heart, Lung, and Blood Institute, Bethesda, Maryland.
JAMA
|July 25, 2014
概括
非骨髓缩性全源性造血干细胞移植 (HSCT) 为严重的状细胞病和沙拉西米亚提供了治愈的选择. 这种低强度疗法显示出稳定的供体移植率高,并改善了末端器官功能,减少了住院治疗和疼痛.
科学领域:
- 血液学 血液学 血液学
- 免疫学 免疫学 免疫学
- 移植医学 移植医学
背景情况:
- 骨髓缩性全源性造血干细胞移植 (HSCT) 可以治愈严重的状细胞疾病,但对成年人造成显著的毒性风险.
- 非骨髓形成性HSCT已经在不同强度的准备方案中进行了探索,但移植排斥和移植对宿主疾病仍然是相当大的挑战.
研究的目的:
- 评估低强度非骨髓衰变性HSCT疗法在患有状细胞病或血症的成年人中的疗效和安全性.
- 评估这种治疗方案对终端器官功能和整体临床结果的影响.
主要方法:
- 一项前性研究招募了30名 (16-65岁) 患有严重状细胞病或血病的患者.
- 该疗法包括阿莱姆图祖马布,低剂量全身辐射,西洛利木斯和从HLA匹配的兄弟姐妹中输注未经操纵的外周血液干细胞.
- 主要终点是1年治疗的成功,由捐赠者类型的血红蛋白或输血独立性定义;次要终点包括嵌合体水平,移植与宿主疾病发生率,存活率,免疫恢复和器官功能评估.
主要成果:
- 29名患者平均存活了3.4年,没有非复发性死亡率;一名患者在复发后死亡.
- 87%的人实现了长期稳定的供体移植,没有急性或慢性移植与宿主疾病.
- 移植患者的血红蛋白正常化,血液溶解消失,脑部成像稳定,肺压力降低,移植后住院治疗率和麻醉剂使用率降低. 严重的不良事件包括疼痛,感染,腹部问题和西洛毒性.
结论:
- 在患有状细胞疾病或血症的患者中,非骨髓化全基 HSCT 实现了高水平的稳定混合供体混血,从而在移植个体中完成了供体红细胞的更换.
- 这种方法显示出显著的临床益处,包括改善器官功能和减少医疗保健利用率.
- 需要进行更长时间的随访进一步研究,以充分确定长期结果,不良事件概况和移植耐受性.
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