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<p>The risk of T cell malignancies after chimeric antigen receptor (CAR) T cell therapy is a concern, although the true incidence remains unclear. Here we analyzed the DESCAR-T registry database, encompassing all pediatric and adult patients with hematologic malignancies who received CAR T cell therapy in France since 1 July 2018. Of the 3,066 patients included (2,536 B cell lymphoma, 162 B cell acute lymphoblastic leukemia (ALL) and 368 multiple myeloma), 1,680 (54.8%) received axicabtagene ciloleucel, 205 (6.7%) brexucabtagene autoleucel, 44 (1.4%) lisocabtagene maraleucel and 769 (25.1%) tisagenlecleucel. All multiple myeloma patients received idecabtagene vicleucel, with none receiving ciltacabtagene autoleucel. After a median follow-up of 12.7 months for B cell lymphoma, 17.7 months for B cell ALL and 6.3 months for multiple myeloma, only one (0.03%) patient developed a T cell malignancy after CAR T infusion. Specifically, the patient was diagnosed with a primary cutaneous CD30<sup>+</sup> T cell lymphoproliferative disorder (anaplastic lymphoma kinase-negative) 3 years after receiving tisagenlecleucel therapy for diffuse large B cell lymphoma. This was associated with the integration of a CAR clone into the tumor suppressor gene <i>PLAAT4</i> (phospholipase A and acyltransferase 4). Thus, the development of this secondary T cell malignancy might be linked to the use of CAR T cell therapy. In conclusion, our findings indicate a very low risk of T cell malignancy after CAR T cell therapy.</p>

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T cell malignancies after CAR T cell therapy in the DESCAR-T registry

  • 期刊论文

  • 发表日期：

    2025年1月8日

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  • Remy Dulery,
  • Vincent Guiraud,
  • Sylvain Choquet,
  • Catherine Thieblemont,
  • Emmanuel Bachy,
  • Stéphane Barete,
  • Ève Todesco,
  • Bertrand Arnulf,
  • Nicolas Boissel,
  • André Baruchel,
  • Jacques-Olivier Bay,
  • Steven Le Gouill,
  • Roch Houot

摘要

The risk of T cell malignancies after chimeric antigen receptor (CAR) T cell therapy is a concern, although the true incidence remains unclear. Here we analyzed the DESCAR-T registry database, encompassing all pediatric and adult patients with hematologic malignancies who received CAR T cell therapy in France since 1 July 2018. Of the 3,066 patients included (2,536 B cell lymphoma, 162 B cell acute lymphoblastic leukemia (ALL) and 368 multiple myeloma), 1,680 (54.8%) received axicabtagene ciloleucel, 205 (6.7%) brexucabtagene autoleucel, 44 (1.4%) lisocabtagene maraleucel and 769 (25.1%) tisagenlecleucel. All multiple myeloma patients received idecabtagene vicleucel, with none receiving ciltacabtagene autoleucel. After a median follow-up of 12.7 months for B cell lymphoma, 17.7 months for B cell ALL and 6.3 months for multiple myeloma, only one (0.03%) patient developed a T cell malignancy after CAR T infusion. Specifically, the patient was diagnosed with a primary cutaneous CD30+ T cell lymphoproliferative disorder (anaplastic lymphoma kinase-negative) 3 years after receiving tisagenlecleucel therapy for diffuse large B cell lymphoma. This was associated with the integration of a CAR clone into the tumor suppressor gene PLAAT4 (phospholipase A and acyltransferase 4). Thus, the development of this secondary T cell malignancy might be linked to the use of CAR T cell therapy. In conclusion, our findings indicate a very low risk of T cell malignancy after CAR T cell therapy.