基于捐赠者搜索预后获得异构细胞移植:一种干预性试验
Jason G Dehn1, Brent Logan2,3, Bronwen E Shaw2
1NMDP, Minneapolis, USA.
medRxiv : the preprint server for health sciences
|October 7, 2024
概括
一个搜索预测计算器有助于估计找到匹配的无血亲捐赠者用于造血细胞移植的可能性. 这项研究发现,基于预后的算法导致患者在找到捐赠者的概率高和低的情况下的移植率相似.
科学领域:
- 血液学 血液学 血液学
- 移植免疫学 移植免疫学
- 临床信息学 临床信息学
背景情况:
- 全基性造血细胞移植 (HCT) 依赖于识别合适的人类白细胞抗原 (HLA) 匹配的捐赠者.
- 一个8/8 HLA匹配的无血缘捐赠者 (MUD) 的可用性在患者之间有很大的差异.
- 搜索预测计算器可以预测找到MUD的可能性.
研究的目的:
- 评估利用捐赠者搜索预后的搜索算法是否可以实现类似的HCT率.
- 为了比较患有很高 (>90%) 与很低 (<10%) 的MUD发现概率的患者之间的移植发生率.
主要方法:
- 一个使用基于搜索预测算法的干预试验用于供体选择.
- 从2019年6月到2022年5月,招募了2225名患有各种血液性恶性瘤和疾病的患者.
- 根据MUD概率分为"非常可能"和"非常不可能"的分层,并有一个"不太可能"的观察臂.
主要成果:
- 1751名患者是可评估的,其中413名 (24%) 来自种族/少数民族.
- 经调整后的6个月累计HCT发病率在"非常可能"组为59.8%,在"非常不可能"组为52.3% (P=0.113).
- 该算法促进了快速的替代性供体鉴定,导致可比的HCT率.
结论:
- 一个潜在的基于搜索预测的算法在全国多中心试验中是可行的.
- 这种方法可以有效地识别替代捐赠者.
- 在发现MUD的高概率和低概率的患者之间观察到可比的HCT率.
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