Abstract
The development of a fatal, clonal, autonomously proliferating CD4-CD8- chimeric antigen receptor (CAR)+ peripheral T-cell lymphoma (PTCL) occurred 1 month after a patient received treatment with tisagenlecleucel for relapsed primary central nervous system lymphoma. The PTCL had a clonal T-cell receptor rearrangement, which was already detectable in the apheresis product for CAR T-cell manufacturing and 7 months earlier for autologous transplantation. Somatic DNMT3A and TET2 mutations in CD34+ stem cells and their progeny were detected in the PTCL, in the apheresis specimen that was obtained for CAR T-cell production, and in the autotransplant. The PTCL harbored an additional somatic TET2 mutation, which was already detectable in the CAR T-cell apheresis product and the final CAR T-cell product at very low frequencies, providing evidence that clonal hematopoiesis had contributed to lymphomagenesis.
Copyright © 2024 Massachusetts Medical Society.
MeSH terms
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Antineoplastic Agents, Immunological* / administration & dosage
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Antineoplastic Agents, Immunological* / adverse effects
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Carcinogenesis / drug effects
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Carcinogenesis / genetics
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Carcinogenesis / immunology
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Central Nervous System Neoplasms* / drug therapy
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Central Nervous System Neoplasms* / immunology
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Clonal Hematopoiesis / drug effects
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Clonal Hematopoiesis / immunology
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DNA Methyltransferase 3A / genetics
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DNA-Binding Proteins / genetics
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Dioxygenases / genetics
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Fatal Outcome
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Gene Rearrangement, T-Lymphocyte / genetics
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Gene Rearrangement, T-Lymphocyte / immunology
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Humans
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Immunotherapy, Adoptive* / adverse effects
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Lymphoma, T-Cell, Peripheral* / blood
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Lymphoma, T-Cell, Peripheral* / diagnosis
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Lymphoma, T-Cell, Peripheral* / genetics
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Lymphoma, T-Cell, Peripheral* / immunology
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Male
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Middle Aged
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Mutation
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Receptors, Antigen, T-Cell* / administration & dosage
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Receptors, Antigen, T-Cell* / agonists
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Receptors, Chimeric Antigen / analysis
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Receptors, Chimeric Antigen / immunology
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Receptors, Chimeric Antigen / metabolism
Substances
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Receptors, Antigen, T-Cell
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Receptors, Chimeric Antigen
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tisagenlecleucel
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Antineoplastic Agents, Immunological
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DNMT3A protein, human
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DNA Methyltransferase 3A
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TET2 protein, human
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DNA-Binding Proteins
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Dioxygenases