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The impact of systemic iron availability on tumoral immunity is unclear. Here, we show that elevated serum hepcidin is associated with reduced survival and decreased intratumoral CD8\n                  <jats:sup>+<\/jats:sup>\n                  T cells in patients with pancreas cancer. While hepcidin is not induced in murine tumor models, administration of a hepcidin mimetic phenocopies the T-cell-depleted tumor microenvironment seen in patients. Mechanistically, chronic antigen-driven mitochondrial dysfunction disrupts iron metabolism and selectively depletes high avidity CD8\n                  <jats:sup>+<\/jats:sup>\n                  T cells during iron restriction. These findings establish a direct link between hepcidin-mediated iron sequestration and tumoral immunity and nominate systemic iron dysregulation as a therapeutic target to enhance anti-tumoral CD8\n                  <jats:sup>+<\/jats:sup>\n                  T cell responses.\n                <\/jats:p>","DOI":"10.64898\/2026.09.21.753167","type":"posted-content","created":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T03:45:18Z","timestamp":1790394318000},"source":"Crossref","is-referenced-by-count":0,"title":["Systemic iron sequestration restricts the intratumoral CD8\n                  <sup>+<\/sup>\n                  T cell landscape in pancreas cancer"],"prefix":"10.64898","author":[{"given":"Joshua D.","family":"Schoenfeld","sequence":"first","affiliation":[{"name":"Depatment of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA"},{"name":"Immuno-Oncology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA"},{"name":"David M. Rubenstein Center for Pancreatic Cancer Research, Memorial Sloan Kettering Cancer Center, New York, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jahi J.","family":"Noel","sequence":"additional","affiliation":[{"name":"Immuno-Oncology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher S.","family":"McGinnis","sequence":"additional","affiliation":[{"name":"Department of Pathology, Stanford University, Stanford, California, USA"},{"name":"Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chenlian","family":"Fu","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, NY, USA"},{"name":"Computational and Systems Biology, Sloan Kettering Institute, New York City, NY, USA"},{"name":"Tri-institutional Program in Computational Biology and Medicine, New York, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brinda","family":"Alagesan","sequence":"additional","affiliation":[{"name":"Depatment of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA"},{"name":"David M. 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Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medicine, New York, NY"},{"name":"School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Ireland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John E.","family":"Connolly","sequence":"additional","affiliation":[{"name":"Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ronan","family":"Chaligne","sequence":"additional","affiliation":[{"name":"Single-cell Analytics Innovation Laboratory, Memorial Sloan Kettering Cancer Center, New York, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Kelsen","sequence":"additional","affiliation":[{"name":"Depatment of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA"},{"name":"David M. 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