移植后更高的阿巴切暴露降低了急性GVHD风险,但没有增加不良事件
Takuto Takahashi1,2,3, Mahmoud Al-Kofahi3, Mutaz Jaber3
1Division Hematology/Oncology, Dana-Farber/Boston Children's Cancer and Blood Disorders Center, Boston, MA.
Blood
|June 15, 2023
概括
较高的阿巴塞普特水平 (Ctrough_1 ≥39 μg/mL) 在输血细胞移植 (HCT) 后显著降低了急性移植对宿主疾病 (aGVHD) 的风险. 这种增加的暴露并没有使复发或病毒感染等安全结果恶化.
科学领域:
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
- 血液学 血液学 血液学
背景情况:
- 阿巴切被批准用于预防血造细胞移植 (HCT) 后的急性移植对宿主疾病 (aGVHD).
- 了解阿巴的药理动力学 (PK) 和暴露-反应关系对于优化其使用至关重要.
研究的目的:
- 在HCT接受者中分析阿巴切 PK.
- 确定阿巴塔塞普特暴露与临床结果之间的关系,特别是GVHD风险.
主要方法:
- 使用非线性混合效应建模进行人口PK分析.
- 在剂量1 (Ctrough_1) 后的最低度与 2-4 级aGVHD.之间的关联评估.
- 递归分区和分类树分析以确定最佳的Ctrough_1值.
主要成果:
- 阿巴塞普 PK 采用了一种具有第一阶段淘汰的 2 分区模型.
- 更高的Ctrough_1 (≥39μg/mL) 与显著降低的GR2-4 aGVHD风险相关 (HR,0.35;P <.001).
- 在Ctrough_1和安全指标 (如复发或病毒感染) 之间没有发现显著的关联.
结论:
- 达到更高的阿巴特塞普特Ctrough_1 (≥39μg/mL) 与改善预防严重的aGVHD有关.
- 既定的ABA2剂量可能无法始终实现这种最佳暴露.
- 更高的阿巴切塞普暴露并没有增加毒性风险,这表明剂量优化的潜力.
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