ALL-Hematotox的发展:预测B细胞急性淋巴细胞白血病中CAR后T细胞血毒性
Monica S Nair1,2, Sara K Silbert1, Kai Rejeski3,4
1Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD.
Blood
|November 19, 2024
概括
免疫效应细胞相关的血液毒性 (ICAHT) 是仿真抗原受体 (CAR) T 细胞疗法的显著毒性. 一个新的ALL-Hematotox (ALL-HT) 评分有效预测B细胞急性淋巴细胞白血病 (B-ALL) 患者的严重中性质衰竭.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 血液学 血液学 血液学
背景情况:
- 免疫效应细胞相关的血液毒性 (ICAHT) 是一种已知的化学抗原受体 (CAR) T 细胞疗法的毒性,特别是在B细胞恶性瘤中.
- 虽然在大型B细胞淋巴瘤,地幔细胞淋巴瘤和多发性骨髓瘤中有记录,但ICAHT和CAR-HEMATOTOX (CAR-HT) 等预测模型尚未在B细胞急性淋巴细胞白血病 (B-ALL) 中进行评估.
- 在B-ALL中,骨髓透可能会影响细胞衰竭,需要对血液毒性的具体评估.
研究的目的:
- 描述儿科和年轻成人B-ALL复发/耐药B-ALL患者的ICAHT发生率和严重程度.
- 评估CAR-HEMATOTOX (CAR-HT) 模型在B-ALL中严重长期中性质衰竭的预测性能.
- 开发和验证B-ALL中血液毒性的新型预测评分,包括骨髓疾病负担.
主要方法:
- 分析了一组156名患有复发/耐药B-ALL的儿童和年轻人,接受CAR T细胞治疗.
- 记录了严重中性衰竭的发生率和持续时间 (绝对中性粒细胞计数<500/μL).
- 应用了CAR-HT模型,并开发了一个新的ALL-Hematotox (ALL-HT) 评分,取代骨髓疾病负担为费里丁,并在独立的队列中得到验证.
主要成果:
- 严重中性质衰竭的中位持续时间为13天,其中53%的人经历了≥3级ICAHT.
- CAR-HT模型显示了有限的区分能力,将近90%的患者归类为高风险患者.
- 开发的ALL-HT得分与严重的长期中性质衰竭 (AUC=0.84) 有着强烈的关联,区分高风险患者具有显著更多的中性质衰竭天数,较低的完全响应率和较短的整体存活期.
结论:
- 在接受CAR T细胞治疗的B-ALL患者中,ICAHT是一个重大问题.
- 现有的CAR-HT模型对于预测B-ALL.的血液毒性是不理想的.
- 新的ALL-HT得分准确地预测了严重的长期中性质衰竭和B-ALL的相关结果,为临床管理提供了精细的工具.
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