Distinct Immune Cell Populations Define Response to Anti-PD-1 Monotherapy and Anti-PD-1/Anti-CTLA-4 Combined Therapy

Cancer Cell. 2019 Feb 11;35(2):238-255.e6. doi: 10.1016/j.ccell.2019.01.003.

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.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Antibodies, Monoclonal, Humanized / administration & dosage*
  • Antigens, CD / immunology
  • Antigens, Differentiation, T-Lymphocyte / immunology
  • Antineoplastic Agents, Immunological / administration & dosage*
  • Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
  • CTLA-4 Antigen / antagonists & inhibitors*
  • CTLA-4 Antigen / immunology
  • Drug Resistance, Neoplasm
  • Female
  • Humans
  • Immunologic Memory / drug effects
  • Ipilimumab / administration & dosage*
  • Lectins, C-Type / immunology
  • Leukocyte Common Antigens / immunology
  • Lymphocytes, Tumor-Infiltrating / drug effects*
  • Lymphocytes, Tumor-Infiltrating / immunology
  • Male
  • Melanoma / drug therapy*
  • Melanoma / genetics
  • Melanoma / immunology
  • Melanoma / pathology
  • Middle Aged
  • Nivolumab / administration & dosage*
  • Phenotype
  • Programmed Cell Death 1 Receptor / antagonists & inhibitors*
  • Programmed Cell Death 1 Receptor / immunology
  • Retrospective Studies
  • Signal Transduction / drug effects
  • Skin Neoplasms / drug therapy*
  • Skin Neoplasms / genetics
  • Skin Neoplasms / immunology
  • Skin Neoplasms / pathology
  • T-Lymphocytes / drug effects*
  • T-Lymphocytes / immunology
  • Treatment Outcome
  • Tumor Burden / drug effects

Substances

  • Antibodies, Monoclonal, Humanized
  • Antigens, CD
  • Antigens, Differentiation, T-Lymphocyte
  • Antineoplastic Agents, Immunological
  • CD69 antigen
  • CTLA-4 Antigen
  • CTLA4 protein, human
  • Ipilimumab
  • Lectins, C-Type
  • PDCD1 protein, human
  • Programmed Cell Death 1 Receptor
  • Nivolumab
  • pembrolizumab
  • Leukocyte Common Antigens