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Loss of IFN-γ Pathway Genes in Tumor Cells as a Mechanism of Resistance to Anti-CTLA-4 Therapy
Open accessAbstract
Antibody blockade of the inhibitory CTLA-4 pathway has led to clinical benefit in a subset of patients with metastatic melanoma. Anti-CTLA-4 enhances T cell responses, including production of IFN-γ, which is a critical cytokine for host immune responses. However, the role of IFN-γ signaling in tumor cells in the setting of anti-CTLA-4 therapy remains unknown. Here, we demonstrate that patients identified as non-responders to anti-CTLA-4 (ipilimumab) have tumors with genomic defects in IFN-γ pathway genes. Furthermore, mice bearing melanoma tumors with knockdown of IFN-γ receptor 1 (IFNGR1) have impaired tumor rejection upon anti-CTLA-4 therapy. These data highlight that loss of the IFN-γ signaling pathway is associated with primary resistance to anti-CTLA-4 therapy. Our findings demonstrate the importance of tumor genomic data, especially IFN-γ related genes, as prognostic information for patients selected to receive treatment with immune checkpoint therapy.
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In the citing paper
“Mutations in IFNGR1 and JAK, a component of the IFNγ signaling pathway, have been found in patients presenting resistance to checkpoint inhibitors (Gao et al., 2016; Zaretsky et al., 2016).”
From Protein Barcodes Enable High-Dimensional Single-Cell CRISPR Screens (2018) · cites this paper as Gao et al., 2016
In the citing paper
“These findings are consistent with emerging clinical data correlating resistance to checkpoint inhibitors with mutations in the B2m and IFNγ pathways (Gao et al., 2016; Zaretsky et al., 2016), and with recent genome-wide CRISPR screening data (Patel et al., 2017).”
From Protein Barcodes Enable High-Dimensional Single-Cell CRISPR Screens (2018) · cites this paper as Gao et al., 2016
In the citing paper
“P. distasonis has been shown to enhance immune checkpoint inhibitor-mediated anticancer immunity by inducing the production of IFNγ+CD8+ T cells.53 54”
In the citing paper
“In addition, knockdown of IFNγ-receptor 1 led to impaired antitumor responses with anti-CTLA4 in a murine model of melanoma (159).”
From The Next Decade of Immune Checkpoint Therapy (2021) · cites this paper as [159]
In the citing paper
“Interferon (IFN) signaling through the Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway plays a prominent role in tumor immunity.”
From Hallmarks of response, resistance, and toxicity to immune checkpoint blockade (2021) · cites this paper as Gao et al., 2016
In the citing paper
“Defects associated with this pathway and its downstream effectors have shown both negative and positive correlations with response to ICB, suggesting a dual role for this pathway in tumor immunity (Ayers et al., 2017; Gao et al., 2016).”
From Hallmarks of response, resistance, and toxicity to immune checkpoint blockade (2021) · cites this paper as Gao et al., 2016
In the citing paper
“Loss of IFN-ɤ signaling could induce resistance to anti-CTLA-4 treatment (95).”
From Gut Microbiome as a Potential Factor for Modulating Resistance to Cancer Immunotherapy (2020) · cites this paper as [95]
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“…available for 20 patient tumor and normal pairs, identified four tumors with somatic mutations in B2M, JAK1, STAT1, and IFNGR1 (Table S1), recently associated with primary or acquired resistance to checkpoint therapy in melanoma (Gao et al., 2016; Sade-Feldman et al., 2017; Zaretsky et al., 2016).”
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Metadata
- Authors
- Gao, J., Shi, L. Z., Zhao, H., Chen, J., Xiong, L., He, Q., Chen, T., Roszik, J., Bernatchez, C., Woodman, S. E., Chen, P.-L., Hwu, P., Allison, J. P., Futreal, A., Wargo, J. A., & Sharma, P.
- Affiliations
- The University of Texas MD Anderson Cancer Center (US)
- Corresponding author
- Sharma, Padmanee
- ORCID
- Venue
- Cell
- Publisher
- Elsevier BV
- Published
- 2016-10
- Volume
- 167
- Issue
- 2
- Pages
- 397-404.e9
- ISSN
- 0092-8674 (ISSN-L)
- PMC
- PMC5088716
- OpenAlex
- W2522313999
- Cited by
- 1,300
- References
- 41
- Citations by year
- 2026: 83 · 2025: 107 · 2024: 128 · 2023: 158 · 2022: 137 · 2021: 174 · 2020: 162 · 2019: 128 · 2018: 121 · 2017: 89 · 2016: 8
- FWCI
- 62.21
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Cell (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Cancer Institute (L30 CA117817, R01CA163793, K08CA160692, P30CA016672, K12CA088084)
- 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
- interferon-gamma signaling, IFNGR1, CTLA-4 blockade, ipilimumab, metastatic melanoma, immune checkpoint therapy, tumor rejection, prognostic factors, T cell response
- MeSH terms
- Ipilimumab, Interferon gamma Receptor, Animals, Antibodies, Monoclonal, Humans, Interferon-gamma, Melanoma, Melanoma, Experimental, Mice, Inbred C57BL, Skin Neoplasms, T-Lymphocytes, Cytokines, Receptors, Interferon, Drug Resistance, Neoplasm, Cell Line, Tumor, Mice, Gene Knockdown Techniques, CTLA-4 Antigen
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