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Long-Term Safety and Efficacy of CD19 Humanized Selective CAR-T Therapy in B-ALL Patients Who Have Previously Received Murine-Based CD19 CAR-T Therapy

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机构： [1]Cell Therapy Center, National Clinical Research Center for Geriatric Diseases, and Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing Institute of Geriatrics, Xuanwu Hospital Capital Medical University, Beijing, China. [2]Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China. [3]Hebei Yanda Lu Daopei Hospital, Langfang, China. [4]Beijing Lu Daopei Institute of Hematology, Beijing Lu Daopei Hospital, Beijing, China. [5]Key Laboratory of Pediatric Hematology and Oncology Ministry of Health, Pediatric Translational Medicine Institute, Department of Hematology and Oncology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

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Murine-based CD19 CAR-T (CD19m CAR-T) therapy can lead to a relatively high CR rate when administered to B-ALL patients for the first time. However, the DOR is sub-optimal and a subset of patients even show primary resistance to CD19m CAR-T. To address these issues, we employed a humanized selective CD19CAR-T (CD19hs CAR-T) and evaluated the long-term safety and efficacy of treating 8 R/R B-ALL patients who had relapsed or failed to achieve CR following CD19m CAR-T infusion (Clinical trials' number: ChiCTR1800014761 and ChiCTR1800017439). Of the 8 patients, 7 achieved CR on Day 30 after the 1st infusion of CD19hs CAR-T. The median CRS grade was 1 without significant neurotoxicity seen in any of the 8 patients. The median DOR was 11 months, significantly longer than the DOR following CD19mCAR-T infusions. Anti-CAR antibodies were induced in patients who had received prior CD19m CAR-T infusions but not in those following a single or repeated CD19hsCAR-T treatment, which probably had contributed to the sub-optimal DOR and/or failure of effective response in these patients. CD19hs CAR-T, in contrast, induced low immunogenicity compared with CD19m CAR-T, suggesting that a repeat dosing strategy might be feasible and efficacious for patients who have relapsed and/or show primary resistance to CD19m CAR-T therapy. In this clinical study, CD19hs CAR-T showed a significant clinical efficacy with mild side effect among patients with R/R B-ALL who had previously received CD19m CAR-T.https://www.chictr.org.cn/showprojen.aspx?proj=25199 (ChiCTR1800014761). https://www.chictr.org.cn/showproj.aspx?proj=29174 (ChiCTR1800017439).Copyright © 2022 Zhao, Zhang, Yang, Wu, Chen, Li, Liu, Wang, Liu, Zhang, Zhou, Lu and Chen.

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出版当年[2021]版：

大类 | 3 区医学

小类 | 3 区肿瘤学

最新[2023]版：

大类 | 3 区医学

小类 | 3 区肿瘤学

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出版当年[2020]版：

Q2 ONCOLOGY

最新[2023]版：

Q2 ONCOLOGY

影响因子： 3.5 最新[2023版] 4 最新五年平均 6.244 出版当年[2020版] 6.264 出版当年五年平均 4.848 出版前一年[2019版] 5.738 出版后一年[2021版]

第一作者：

第一作者机构： [1]Cell Therapy Center, National Clinical Research Center for Geriatric Diseases, and Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing Institute of Geriatrics, Xuanwu Hospital Capital Medical University, Beijing, China. [2]Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China.

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通讯作者：

通讯机构： [1]Cell Therapy Center, National Clinical Research Center for Geriatric Diseases, and Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing Institute of Geriatrics, Xuanwu Hospital Capital Medical University, Beijing, China. [2]Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, China. [3]Hebei Yanda Lu Daopei Hospital, Langfang, China. [4]Beijing Lu Daopei Institute of Hematology, Beijing Lu Daopei Hospital, Beijing, China.

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