Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (33): 5263-5268.doi: 10.3969/j.issn.2095-4344.1827

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Allogeneic chimeric antigen receptor T-cell therapy for recurrent chronic myeloid leukemia in lymphoid blast crisis after allogeneic hematopoietic stem cell transplantation: a two-case report and literature review

Wang Zhen1, Zhang Xuejun2, Chen Yuqing1, Zhang Lei3, Zhu Zunmin1, Li Yulong3, Huang Zhoufeng3, Lian Cheng1, Shi Mingyue1, Zhang Hongsheng4, Wang Fuxu2, Wen Shupeng2, Yang Jing1, Zheng Meiqiong1, Sun Kai1   

  • Revised:2019-06-19 Online:2019-11-28 Published:2019-11-28
  • Contact: Sun Kai, Chief physician, Department of Hematology, Zhengzhou University People’s Hospital & Henan Provincial People’s Hospital, Zhengzhou 450003, Henan Province, China
  • About author:Wang Zhen, Master, Associate chief physician, Department of Hematology, Zhengzhou University People’s Hospital & Henan Provincial People’s Hospital, Zhengzhou 450003, Henan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81471589 and 81273259 (both to SK)

Abstract:

BACKGROUND: In recent years, tumor immunotherapy has developed rapidly. Most scholars have focused on the single antibody treatment with autologous chimeric antigen receptor T-cell (CAR-T), but poor quality and small number of cultured cells are encountered. Therefore, allogeneic CAR-T cells have a better developmental potential.
OBJECTIVE: To investigate the efficacy and safety of allogeneic CAR-T cells in the treatment of recurrent leukemia after allogeneic hematopoietic stem cell transplantation.
METHODS: Two patients with relapsed refractory chronic myeloid leukemia in lymphoid blast crisis after allogeneic hematopoietic stem cell transplantation were treated with allogeneic CAR-T cells. Their clinical data were analyzed and relevant literature was reviewed.
RESULTS AND CONCLUSION: Case 1 was hospitalized because of fever and fatigue for 5 days, and was diagnosed as chronic myeloid leukemia in lymphoid blast crisis by bone marrow cell morphology, flow cytometry, chromosome analysis, fusion gene and other related examinations. After oral imatinib combined with low dose chemotherapy, HLA10/10 matched haploid transplantation from daughter to mother proceeded smoothly. Three months after transplantation, BCR-ABL (p210) was positive, and chimera: donor cells accounted for 67.4%. After treatment with fludarabine+cyclophosphamide regimen, anti-CD19 CAR-T cells were infused at a dose of 5 ×106 cells/kg. Two weeks later, BCR-ABL (p210) turned negative and chimera: donor cells accounted for 99.62%. During the period, cytokine release syndrome level 1 appeared and symptomatic treatment was performed. The follow-up lasted for 6 months. Case 2 was treated in the local hospital in April 2011 because of left upper abdomen fullness for 1 year and night sweat for 15 days. One year later, it progressed to chronic myeloid leukemia in lymphoid blast crisis with T315I mutation. HLA 7/10 matched haploid stem cell transplantation from little brother to brother was performed after remission by chemotherapy. Anti-CD19 CAR-T cells were transfused at 2×105/kg in the second relapse in 2018. During this period, cytokine release syndrome level 4 appeared. Chronic myeloid leukemia continued to alleviate for over 2 months and then relapsed resulting in death. Thus, the donor-derived CAR-T cells can be considered for the treatment of recurrent chronic myeloid leukemia in lymphoid blast crisis after allogeneic hematopoietic stem cell transplantation. It can be transfused repeatedly. It is safe and effective, and the incidence of Graft-versus-host disease is low. Sequential treatment with anti-CD22 CAR-T cells is safe and effective.

Key words: allogeneic, chimeric antigen receptor T-cell therapy, chronic myeloid leukemia, acute lymphoblastic leukemia, post-transplantation recurrence, National Natural Science Foundation of China

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