Abstract
Cancer immunotherapies provide survival benefits in responding patients, but many patients fail to respond. Identifying the biology of treatment response and resistance are a priority to optimize drug selection and improve patient outcomes. We performed transcriptomic and immune profiling on 158 tumor biopsies from melanoma patients treated with anti-PD-1 monotherapy (n = 63) or combined anti-PD-1 and anti-CTLA-4 (n = 57). These data identified activated T cell signatures and T cell populations in responders to both treatments. Further mass cytometry analysis identified an EOMES+CD69+CD45RO+ effector memory T cell phenotype that was significantly more abundant in responders to combined immunotherapy compared with non-responders (n = 18). The gene expression profile of this population was associated with longer progression-free survival in patients treated with single agent and greater tumor shrinkage in both treatments.
Keywords:
EOMES; RNA-seq; anti-CTLA-4; anti-PD-1; combination therapy; immune checkpoint inhibitors; immunotherapy; melanoma; predictive biomarkers; resistance mechanisms.
Copyright © 2019 Elsevier Inc. All rights reserved.
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Aged
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Antibodies, Monoclonal, Humanized / administration & dosage*
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Antigens, CD / immunology
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Antigens, Differentiation, T-Lymphocyte / immunology
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Antineoplastic Agents, Immunological / administration & dosage*
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Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
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CTLA-4 Antigen / antagonists & inhibitors*
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CTLA-4 Antigen / immunology
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Drug Resistance, Neoplasm
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Female
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Humans
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Immunologic Memory / drug effects
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Ipilimumab / administration & dosage*
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Lectins, C-Type / immunology
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Leukocyte Common Antigens / immunology
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Lymphocytes, Tumor-Infiltrating / drug effects*
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Lymphocytes, Tumor-Infiltrating / immunology
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Male
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Melanoma / drug therapy*
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Melanoma / genetics
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Melanoma / immunology
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Melanoma / pathology
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Middle Aged
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Nivolumab / administration & dosage*
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Phenotype
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Programmed Cell Death 1 Receptor / antagonists & inhibitors*
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Programmed Cell Death 1 Receptor / immunology
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Retrospective Studies
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Signal Transduction / drug effects
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Skin Neoplasms / drug therapy*
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Skin Neoplasms / genetics
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Skin Neoplasms / immunology
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Skin Neoplasms / pathology
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T-Lymphocytes / drug effects*
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T-Lymphocytes / immunology
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Treatment Outcome
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Tumor Burden / drug effects
Substances
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Antibodies, Monoclonal, Humanized
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Antigens, CD
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Antigens, Differentiation, T-Lymphocyte
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Antineoplastic Agents, Immunological
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CD69 antigen
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CTLA-4 Antigen
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CTLA4 protein, human
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Ipilimumab
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Lectins, C-Type
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PDCD1 protein, human
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Programmed Cell Death 1 Receptor
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Nivolumab
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pembrolizumab
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Leukocyte Common Antigens