# Safety and efficacy of donor-derived chimeric antigen receptor T-cell therapy in patients with relapsed B-cell acute lymphoblastic leukemia after allogeneic hematopoietic stem cell transplantation

**Authors:** 亚琪 卓, 三芳 涂, 璇 周, 继龙 杨, 丽娟 周, 睿 黄, 宇贤 黄, 梅芳 李, 波 金, 博 王, 诗琦 黎, 忠涛 袁, 丽华 张, 林 刘, 三斌 王, 玉华 李

PMC · DOI: 10.3760/cma.j.cn121090-20230815-00068 · Chinese Journal of Hematology · 2024-01-01

## TL;DR

This study shows that donor-derived CAR-T cell therapy is a safe and effective treatment for B-cell acute lymphoblastic leukemia that recurs after stem cell transplantation.

## Contribution

The study provides new evidence on the safety and efficacy of donor-derived CAR-T cell therapy in a specific patient population.

## Key findings

- 18 out of 22 patients achieved complete remission with no minimal residual disease after CAR-T cell therapy.
- The 6-month overall survival rate was 67.90%, and the 1-year rate was 41.10%.
- Only 13.64% of patients experienced grade 3 or higher cytokine release syndrome, with no cases of neurotoxicity.

## Abstract

探索供者来源靶向CD19或联合靶向CD22嵌合抗原受体T细胞（CAR-T细胞）治疗异基因造血干细胞移植后复发急性B淋巴细胞白血病（B-ALL）的有效性及安全性。

回顾性分析2015年9月至2022年12月在南方医科大学珠江医院及解放军联勤保障部队第九二〇医院血液科22例接受供者来源 CAR-T细胞治疗的异基因造血干细胞移植后复发的B-ALL患者的有效性和安全性。主要研究终点是总生存（OS），次要研究终点是无事件生存（EFS）、完全缓解（CR）率、3～4级不良事件。

CAR-T细胞输注后，18例（81.82％）患者获得CR且微小残留病（MRD）均为阴性。中位随访1037（95％CI 546～1509）d，中位OS期为287（95％CI 132～441）d，中位EFS期为212（95％CI 120～303）d，6个月OS率为67.90％（95％CI 48.30％～84.50％），6个月EFS率为58.70％（95％CI 37.92％～79.48％），1年OS率为41.10％（95％CI 19.15％～63.05％），1年EFS率为34.30％（95％CI 13.92％～54.68％）。3例（13.64％）患者发生≥3级细胞因子释放综合征（CRS），未发生免疫效应细胞相关神经毒性综合征（ICANS），2例患者发生急性移植物抗宿主病（aGVHD）（分别为Ⅱ度和Ⅳ度）。

供者来源CAR-T细胞治疗异基因造血干细胞移植后复发B-ALL是一种安全有效的治疗策略。

## Linked entities

- **Proteins:** CD19 (CD19 molecule), CD22 (CD22 molecule)
- **Diseases:** B-cell acute lymphoblastic leukemia (MONDO:0004947), acute graft-versus-host disease (MONDO:0020546), cytokine release syndrome (MONDO:0600008)

## Full-text entities

- **Genes:** CD22 (CD22 molecule) [NCBI Gene 933] {aka SIGLEC-2, SIGLEC2}, CD19 (CD19 molecule) [NCBI Gene 930] {aka B4, CVID3}
- **Diseases:** acute lymphoblastic leukemia (MESH:D054198), B-ALL (MESH:D015456), cytokine release syndrome (MESH:D000080424), graft-versus-host disease (MESH:D006086)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

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## References

37 references — full list in the complete paper: https://tomesphere.com/paper/PMC10951125/full.md

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Source: https://tomesphere.com/paper/PMC10951125