Cited by 648Cancer Immunotherapy and BiomarkersImmunotherapy and Immune ResponsesT-cell and B-cell Immunology

Immune escape to PD-L1/PD-1 blockade: seven steps to success (or failure)

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Kim, J.M., Chen, D.S.·2016·Annals of Oncology

Abstract

The emergence of programmed death-ligand 1 (PD-L1)/programmed death-1 (PD-1)-targeted therapy has demonstrated the importance of the PD-L1 : PD-1 interaction in inhibiting anticancer T-cell immunity in multiple human cancers, generating durable responses and extended overall survival. However, not all patients treated with PD-L1/PD-1-targeted therapy experience tumor shrinkage, durable responses, or prolonged survival. To extend such benefits to more cancer patients, it is necessary to understand why some patients experience primary or secondary immune escape, in which the immune response is incapable of eradicating all cancer cells. Understanding immune escape from PD-L1/PD-1-targeted therapy will be important to the development of rational immune-combination therapy and predictive diagnostics and to the identification of novel immune targets. Factors that likely relate to immune escape include the lack of strong cancer antigens or epitopes recognized by T cells, minimal activation of cancer-specific T cells, poor infiltration of T cells into tumors, downregulation of the major histocompatibility complex on cancer cells, and immunosuppressive factors and cells in the tumor microenvironment. Precisely identifying and understanding these mechanisms of immune escape in individual cancer patients will allow for personalized cancer immunotherapy, in which monotherapy and combination immunotherapy are chosen based on the presence of specific immune biology. This approach may enable treatment with immunotherapy without inducing immune escape, resulting in a larger proportion of patients obtaining clinical benefit.

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Crossref · 10.1093/annonc/mdw217

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  • Most patients could not benefit from α-PD-1/PD-L1 treatments, owing to primary or acquired treatment resistance.

    “Although α-PD-1/PD-L1 therapies exhibit potent antitumor effects in some patients, most patients could not benefit from α-PD-1/PD-L1 treatments, owing to primary or acquired treatment resistance [13].”

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Authors
Kim, J. M., & Chen, D. S.
Affiliations
Genentech (US)
Corresponding author
Chen, D.S.
Venue
Annals of Oncology
Publisher
Elsevier BV
Published
2016-08
Volume
27
Issue
8
Pages
1492-1504
ISSN
0923-7534 (ISSN-L)
OpenAlex
W2402433991
Cited by
648
References
187
Citations by year
2026: 22 · 2025: 61 · 2024: 72 · 2023: 87 · 2022: 127 · 2021: 81 · 2020: 66 · 2019: 53 · 2018: 41 · 2017: 35 · 2016: 3
FWCI
4.38
Type
journal article
Language
en
Open access
Locations
  • Annals of Oncology (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
immune evasion, immune checkpoint inhibitors, cancer immunotherapy, tumor-specific T cells, T cell infiltration, MHC downregulation, tumor microenvironment, immunosuppressive cells, tumor antigens, predictive biomarkers, combination immunotherapy, personalized cancer immunotherapy
MeSH terms
Antibodies, Monoclonal, Humans, Immunotherapy, Neoplasms, T-Lymphocytes, Molecular Targeted Therapy, Tumor Microenvironment, B7-H1 Antigen, Programmed Cell Death 1 Receptor

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