Cited by 236Cancer Immunotherapy and BiomarkersT-cell and B-cell ImmunologyImmunotherapy and Immune Responses

Immune Toxicities Elicted by CTLA-4 Blockade in Cancer Patients Are Associated with Early Diversification of the T-cell Repertoire

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Oh, David Y., Cham, Jason, Zhang, Li, Fong, Grant, Kwek, Serena S., Klinger, Mark, Faham, Malek, Fong, Lawrence·2017·Cancer Research

Published version of a preprint

Abstract

While immune checkpoint blockade elicits efficacious responses in many patients with cancer, it also produces a diverse and unpredictable number of immune-related adverse events (IRAE). Mechanisms driving IRAEs are generally unknown. Because CTLA-4 blockade leads to proliferation of circulating T cells, we examined in this study whether ipilimumab treatment leads to clonal expansion of tissue-reactive T cells. Rather than narrowing the T-cell repertoire to a limited number of clones, ipilimumab induced greater diversification in the T-cell repertoire in IRAE patients compared with patients without IRAEs. Specifically, ipilimumab triggered increases in the numbers of clonotypes, including newly detected clones and a decline in overall T-cell clonality. Initial broadening in the repertoire occurred within 2 weeks of treatment, preceding IRAE onset. IRAE patients exhibited greater diversity of CD4+ and CD8+ T cells, but showed no differences in regulatory T-cell numbers relative to patients without IRAEs. Prostate-specific antigen responses to ipilimumab were also associated with increased T-cell diversity. Our results show how rapid diversification in the immune repertoire immediately after checkpoint blockade can be both detrimental and beneficial for patients with cancer. Cancer Res; 77(6); 1322–30. ©2016 AACR.

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Crossref · 10.1158/0008-5472.can-16-2324

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  • Autoimmune colitis, vitiligo, and autoantibody production are now included in CTCAE grading of immune-related adverse events due to immunotherapy.

    “Autoimmune colitis, vitiligo, and autoantibody production are now included in CTCAE grading of irAEs due to immunotherapy [1, 4, 6, 20, 22, 34].”

    From Immune reconstitution and clinical recovery following anti-CD28 antibody (TGN1412)-induced cytokine storm (2021) · cites this paper as [22]

    The Introduction identifies colitis as an immune-related adverse event of checkpoint therapy, and the Results discuss grading adverse events. Neither section establishes that colitis, vitiligo, and autoantibody production are included in CTCAE grading; searches for CTCAE, vitiligo, and autoantibodies found no such passage in our copy. Page numbers were unavailable. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • In some cancer patients, immune checkpoint blockade produces immune-related adverse events during short-term follow-up, but reliable immune biomarkers for these effects remain under study.

    “Immune checkpoint blockade induces irAEs during short-term follow-up of some patients with cancer, though robust immune biomarkers correlating with adverse effects of therapy are still being investigated [1, 4, 7, 20–25].”

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Authors
Oh, D. Y., Cham, J., Zhang, L., Fong, G., Kwek, S. S., Klinger, M., Faham, M., & Fong, L.
Affiliations
  • University of California, San Francisco (US)
  • 2Adaptive Biotechnologies, South San Francisco, California.
Corresponding author
Fong, Lawrence
Venue
Cancer Research
Published
2017-03-14
Volume
77
Issue
6
Pages
1322-1330
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2566809924
Cited by
236
References
31
Citations by year
2026: 7 · 2025: 19 · 2024: 30 · 2023: 30 · 2022: 36 · 2021: 39 · 2020: 29 · 2019: 23 · 2018: 16 · 2017: 6
FWCI
8.09
Type
journal article
Language
en
Open access
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • NIH (1R01 CA163012, 1R01 CA136753, 4T32 CA177555)
  • Peter Michael Foundation (S.S. Kwek)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
CTLA-4 blockade, ipilimumab, immune-related adverse events, clonotype expansion, immune checkpoint inhibitors, CD4+ T cells, CD8+ T cells, regulatory T cells, prostate-specific antigen, cancer immunotherapy
MeSH terms
Ipilimumab, Antibodies, Monoclonal, Humans, Male, Prognosis, T-Lymphocyte Subsets, Granulocyte-Macrophage Colony-Stimulating Factor, T-Lymphocytes, Regulatory, CTLA-4 Antigen, Prostatic Neoplasms, Castration-Resistant

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