人类白细胞抗原的进化分歧作为一种新的风险因素,在急性淋巴细胞白血病患者中选择捐赠者,这些患者接受了单一血型造血干细胞移植
Xing-Yu Cao1,2, Hai-Fei Zhou3, Xiang-Jun Liu3
1Department of Bone Marrow Transplant, Hebei Yanda Lu Daopei Hospital, Langfang, China.
Frontiers in immunology
|September 4, 2024
概括
人类白细胞抗原进化分歧 (HED) 在造血干细胞移植 (HSCT) 中影响复发和移植对宿主疾病. 高捐赠者-接受者HED类II预测严重的GVHD,而高接受者HED类I降低了复发风险.
科学领域:
- 免疫遗传学 免疫遗传学
- 移植免疫学 移植免疫学
背景情况:
- 人类白细胞抗原 (HLA) 进化分歧 (HED) 反映了免疫组的多样性,并预测了免疫治疗反应.
- 在全源造血干细胞移植 (HSCT) 中HED的作用仍然存在争议.
研究的目的:
- 研究I类和II类HED对急性淋巴细胞白血病 (ALL) 患者的HSCT结果的临床影响.
- 评估HED与复发,移植与宿主疾病 (GVHD),总生存率 (OS) 和无疾病生存率 (DFS) 的关联.
主要方法:
- 追溯分析225名ALL患者,他们接受了平分相同的HSCT.
- 使用接受者,捐赠者和捐赠者-接受者对的格兰瑟姆距离计算HED.
- 根据中位数得分将患者分为高或低HED组进行分层.
主要成果:
- 接受高HED类I (R_HED类I) 的患者,累计复发发病率较低 (12.2%对25.0%,P=0.00814).
- 高捐赠-接受HEDII类 (D/R_HEDII类) 是严重急性GVHD (aGVHD) 的独立风险因素 (24.0%对6.1%,P=0.0027).
- 在高和低HED组之间没有观察到OS或DFS的显著差异.
结论:
- 在这个HSCT队列中,HED对OS和DFS的预后价值有限.
- D/R_HEDII类是一种新型的独立风险因子,用于严重的aGVHD在单一的HSCT中.
- HED可能有助于选择最佳的 haploidentical 捐赠者,这需要在更大的研究中进一步验证.
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