Cancer-Germline Antigen Expression Discriminates Clinical Outcome to CTLA-4 Blockade.
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Shukla SA
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA; Broad Institute, Cambridge, MA 02142, USA.
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Bachireddy P
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA; Broad Institute, Cambridge, MA 02142, USA; Department of Medicine, Brigham & Women's Hospital, Boston, MA 02115, USA.
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Schilling B
Department of Dermatology, University Hospital, University Duisburg-Essen, 45147 Essen, Germany; German Cancer Consortium (DKTK), 69121 Heidelberg, Germany; Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, 97080 Würzburg, Germany.
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Galonska C
Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany.
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Zhan Q
Program in Dermatopathology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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Bango C
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA.
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Langer R
Department of Pathology, University of Bern, 3012 Bern, Switzerland.
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Lee PC
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA.
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Gusenleitner D
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA.
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Keskin DB
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA; Broad Institute, Cambridge, MA 02142, USA; Department of Medicine, Brigham & Women's Hospital, Boston, MA 02115, USA.
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Babadi M
Broad Institute, Cambridge, MA 02142, USA.
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Mohammad A
Broad Institute, Cambridge, MA 02142, USA.
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Gnirke A
Broad Institute, Cambridge, MA 02142, USA.
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Clement K
Broad Institute, Cambridge, MA 02142, USA; Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138, USA.
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Cartun ZJ
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA.
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Van Allen EM
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA; Broad Institute, Cambridge, MA 02142, USA; Department of Medicine, Brigham & Women's Hospital, Boston, MA 02115, USA.
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Miao D
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA; Broad Institute, Cambridge, MA 02142, USA.
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Huang Y
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA.
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Snyder A
Weill Cornell Medical College, New York, NY, USA; Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA.
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Merghoub T
Weill Cornell Medical College, New York, NY, USA; Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA.
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Wolchok JD
Weill Cornell Medical College, New York, NY, USA; Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10016, USA.
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Garraway LA
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA; Broad Institute, Cambridge, MA 02142, USA; Department of Medicine, Brigham & Women's Hospital, Boston, MA 02115, USA.
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Meissner A
Broad Institute, Cambridge, MA 02142, USA; Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany; Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138, USA.
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Weber JS
New York University Langone Medical Center, New York, NY 10016, USA.
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Hacohen N
Broad Institute, Cambridge, MA 02142, USA.
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Neuberg D
Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.
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Potts PR
Department of Cell and Molecular Biology, St. Jude Children's Research Hospital, Memphis, TN 38105-3678, USA.
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Murphy GF
Program in Dermatopathology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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Lian CG
Program in Dermatopathology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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Schadendorf D
Department of Dermatology, University Hospital, University Duisburg-Essen, 45147 Essen, Germany; German Cancer Consortium (DKTK), 69121 Heidelberg, Germany.
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Hodi FS
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham & Women's Hospital, Boston, MA 02115, USA.
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Wu CJ
Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA; Broad Institute, Cambridge, MA 02142, USA; Department of Medicine, Brigham & Women's Hospital, Boston, MA 02115, USA. Electronic address: cwu@partners.org.
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English
CTLA-4 immune checkpoint blockade is clinically effective in a subset of patients with metastatic melanoma. We identify a subcluster of MAGE-A cancer-germline antigens, located within a narrow 75 kb region of chromosome Xq28, that predicts resistance uniquely to blockade of CTLA-4, but not PD-1. We validate this gene expression signature in an independent anti-CTLA-4-treated cohort and show its specificity to the CTLA-4 pathway with two independent anti-PD-1-treated cohorts. Autophagy, a process critical for optimal anti-cancer immunity, has previously been shown to be suppressed by the MAGE-TRIM28 ubiquitin ligase in vitro. We now show that the expression of the key autophagosome component LC3B and other activators of autophagy are negatively associated with MAGE-A protein levels in human melanomas, including samples from patients with resistance to CTLA-4 blockade. Our findings implicate autophagy suppression in resistance to CTLA-4 blockade in melanoma, suggesting exploitation of autophagy induction for potential therapeutic synergy with CTLA-4 inhibitors.
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bronze
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https://sonar.ch/global/documents/222791
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