Cited by 862CAR-T cell therapy researchImmunotherapy and Immune ResponsesT-cell and B-cell Immunology

Disruption of TET2 promotes the therapeutic efficacy of CD19-targeted T cells

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Fraietta, Joseph A., Nobles, Christopher L., Sammons, Morgan A., Lundh, Stefan, Carty, Shannon A., Reich, Tyler J., Cogdill, Alexandria P., Morrissette, Jennifer J. D. +30 more·2018·Nature

Abstract

Cancer immunotherapy based on genetically redirecting T cells has been used successfully to treat B cell malignancies 1-3. In this strategy, the T cell genome is modified by integration of viral vectors or transposons encoding chimaeric antigen receptors (CARs) that direct tumour cell killing. However, this approach is often limited by the extent of expansion and persistence of CAR T cells 4,5. Here we report mechanistic insights from studies of a patient with chronic lymphocytic leukaemia treated with CAR T cells targeting the CD19 protein. Following infusion of CAR T cells, anti-tumour activity was evident in the peripheral blood, lymph nodes and bone marrow; this activity was accompanied by complete remission. Unexpectedly, at the peak of the response, 94% of CAR T cells originated from a single clone in which lentiviral vector-mediated insertion of the CAR transgene disrupted the methylcytosine dioxygenase TET2 gene. Further analysis revealed a hypomorphic mutation in this patient's second TET2 allele. TET2-disrupted CAR T cells exhibited an epigenetic profile consistent with altered T cell differentiation and, at the peak of expansion, displayed a central memory phenotype. Experimental knockdown of TET2 recapitulated the potency-enhancing effect of TET2 dysfunction in this patient's CAR T cells. These findings suggest that the progeny of a single CAR T cell induced leukaemia remission and that TET2 modification may be useful for improving immunotherapies.

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Crossref · 10.1038/s41586-018-0178-z

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  • The composition of autologous starting material from cancer patients is highly variable, influenced by patient age and defects due to underlying disease or pre-treatment with lymphotoxic agents.

    “However, the composition of autologous starting material from cancer patients is highly variable, influenced by patient age and defects due to underlying disease or pre-treatment with lymphotoxic agents (35-38).”

    From Scalable Manufacturing of CAR T Cells for Cancer Immunotherapy (2021) · cites this paper as [38]

    The Methods section ('Patient samples' and 'CAR T-cell manufacturing and correlative studies'; page not available) describes obtaining autologous T cells but does not assess variability in starting-material composition. Searches for patient age, underlying disease, and prior lymphotoxic treatment found no passage linking those factors to that composition. (LLM, conf=0.76)

    Experimental — accuracy not yet measured
  • In that patient, T cells carrying a lentiviral insertion in TET2 expanded preferentially at peak response and probably contributed to the complete response.

    “T cells with a lentiviral integration disrupting TET2 showed strong preferential expansion at the peak of a patient’s response and likely contributed to this complete response to CAR T cell therapy.”
  • A recent case of CAR T cell therapy for CLL illustrated the potential of human primary T cell loss-of-function screens.

    “The potential power of human primary T cell loss-of-function screens was recently demonstrated in a patient who received CAR T cell therapy for chronic lymphocytic leukemia (CLL) (Fraietta et al., 2018).”
  • There is a report of an exceptional response in a patient with CLL treated by infusion of CAR T-cells in which the CAR construct disrupted one copy of TET2, while the other copy had been previously mutated somatically.

    “There is also a report of an exceptional response in a patient with CLL treated by infusion of chimeric antigen receptor (CAR) T-cells in which the CAR construct disrupted one copy of TET2, while the other copy had been previously mutated somatically 96.”

    From Clonal hematopoiesis in human aging and disease (2019) · cites this paper as [96]

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Authors
Fraietta, J. A., Nobles, C. L., Sammons, M. A., Lundh, S., Carty, S. A., Reich, T. J., Cogdill, A. P., Morrissette, J. J. D., DeNizio, J. E., Reddy, S., Hwang, Y., Gohil, M., Kulikovskaya, I., Nazimuddin, F., Gupta, M., Chen, F., Everett, J. K., Alexander, K. A., Lin-Shiao, E., Gee, M. H., Liu, X., Young, R. M., Ambrose, D., Wang, Y., Xu, J., Jordan, M. S., Marcucci, K. T., Levine, B. L., Garcia, K. C., Zhao, Y., Kalos, M., Porter, D. L., Kohli, R. M., Lacey, S. F., Berger, S. L., Bushman, F. D., June, C. H., & Melenhorst, J. J.
Affiliations
  • Abramson Cancer Center (US)
  • University of Pennsylvania (US)
  • State University of New York (US)
  • University of Michigan (US)
  • Stanford Medicine (US)
  • Parker Institute for Cancer Immunotherapy (US)
Corresponding author
  • June, Carl H.
  • Melenhorst, J. Joseph
Venue
Nature
Published
2018-05-30
Volume
558
Issue
7709
Pages
307-312
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2804231581
Cited by
862
References
47
Citations by year
2026: 69 · 2025: 117 · 2024: 126 · 2023: 111 · 2022: 105 · 2021: 116 · 2020: 107 · 2019: 86 · 2018: 25
FWCI
31.32
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • National Cancer Institute (T32CA009140, R01CA165206, R01CA078831, P01CA214278)
  • National Institute of General Medical Sciences (R01GM118501)
  • National Institute of Allergy and Infectious Diseases (U01AI104400, K08AI101008, R01AI104400, U19AI117950, R01AI082020, P30AI045008)
Topics
  • Health Sciences › Medicine › Oncology › CAR-T cell therapy research
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
TET2, CD19, chimeric antigen receptor T cells, CAR T-cell therapy, chronic lymphocytic leukemia, DNA methylation, epigenetic reprogramming, T cell differentiation, central memory T cells, T cell expansion, B-cell malignancies
MeSH terms
Aged, Alleles, Cell Differentiation, Clinical Trials as Topic, Clone Cells, Humans, Immunotherapy, Male, Mutation, Recombinant Fusion Proteins, T-Lymphocytes, Leukemia, Lymphocytic, Chronic, B-Cell, Antigens, CD19, Transgenes, Adoptive Transfer, Epigenesis, Genetic, 5-Methylcytosine, Dioxygenases, HEK293 Cells

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