Conference Proceedings

CD8 TISSUE-RESIDENT MEMORY T CELLS ARE TUMOUR REACTIVE AND INCREASE AFTER IMMUNOTHERAPY IN A CASE OF METASTATIC MUCOSAL MELANOMA

Angela Pizzolla, Simon Keam, Ismael Vergara, Franco Caramia, Minyu Wang, Nikolce Kocovski, Nguyen ThuNgoc, Sean Macdonald, Daniela Tantalo, Pasquale Petrone, Han Xian Aw Yeang, David Gyorki, Alison Weppler, George Au-Yeung, Shahneen Sandhu, Maurizio Perdicchio, Grant McArthur, Tony Papenfuss, Paul Neeson

JOURNAL FOR IMMUNOTHERAPY OF CANCER | BMJ PUBLISHING GROUP | Published : 2020

Abstract

BackgroundMucosal melanoma is a rare subtype of melanoma originating from mucosal tissues (1), metastases are very aggressive and respond poorly to therapy, including immune checkpoint inhibitors (ICI) such as anti-CTLA4 and anti-PD1 antibodies (2–5). CD8+ T cells constitute the most abundant immune infiltrate in metastatic melanoma, of which the Tissue Resident Memory subset (TRM) is of particular interest (6). CD8+ TRM cells express the highest levels of immune checkpoint receptors, proliferate in response to ICI and correlate with longer disease-free and overall survival (6–8). The immune landscape in mucosal melanoma remains poorly characterized. We aimed to: 1) phenotype CD8+ T cells an..

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Grants

Funding Acknowledgements

The authors would like to acknowledge imCORE La Hoffmann-Roche Ltd. for funding.