journal contribution
posted on 2023-04-03, 08:20 authored by François-Xavier Danlos, Matthieu Texier, Bastien Job, Severine Mouraud, Lydie Cassard, Capucine Baldini, Andrea Varga, Andrey A. Yurchenko, Audrey Rabeau, Stéphane Champiat, Diane Letourneur, Delphine Bredel, Sandrine Susini, Yuna Blum, Aurelien Parpaleix, Cedric Parlavecchio, Lambros Tselikas, Jean-Eudes Fahrner, Anne-Gaelle Goubet, Mathieu Rouanne, Saloomeh Rafie, Alae Abbassi, Ines Kasraoui, Marie Breckler, Siham Farhane, Samy Ammari, Salim Laghouati, Anas Gazzah, Ludovic Lacroix, Benjamin Besse, Nathalie Droin, Marc Deloger, Sophie Cotteret, Julien Adam, Laurence Zitvogel, Sergey I. Nikolaev, Nathalie Chaput, Christophe Massard, Jean-Charles Soria, Carlos Gomez-Roca, Gerard Zalcman, David Planchard, Aurelien Marabelle Gating strategy for flow cytometry analyses of T cells infiltration on tumor biopsies.
Funding
Merck Sharp and Dohme (MSD)
Boehringer Ingelheim (BI)
Institut Gustave-Roussy (Gustave Roussy)
Transgene
Fondation pour la Recherche Médicale (FRM)
MSDAVENIR
Université Paris-Saclay (University of Paris-Saclay)
Agence Nationale de la Recherche (ANR)
Seerave Foundation (Seerave)
SIRIC
History
ARTICLE ABSTRACT
Cancer immunotherapy combinations have recently been shown to improve the overall survival of advanced mesotheliomas, especially for patients responding to those treatments. We aimed to characterize the biological correlates of malignant pleural mesotheliomas’ primary resistance to immunotherapy and antiangiogenics by testing the combination of pembrolizumab, an anti–PD-1 antibody, and nintedanib, a pan-antiangiogenic tyrosine kinase inhibitor, in the multicenter PEMBIB trial (NCT02856425). Thirty patients with advanced malignant pleural mesothelioma were treated and explored. Unexpectedly, we found that refractory patients were actively recruiting CD3+CD8+ cytotoxic T cells in their tumors through CXCL9 tumor release upon treatment. However, these patients displayed high levels of somatic copy-number alterations in their tumors that correlated with high blood and tumor levels of IL6 and CXCL8. Those proinflammatory cytokines resulted in higher tumor secretion of VEGF and tumor enrichment in regulatory T cells. Advanced mesothelioma should further benefit from stratified combination therapies adapted to their tumor biology.
Sequential explorations of fresh tumor biopsies demonstrated that mesothelioma resistance to anti–PD-1 + antiangiogenics is not due to a lack of tumor T-cell infiltration but rather due to adaptive immunosuppressive pathways by tumors, involving molecules (e.g., IL6, CXCL8, VEGF, and CTLA4) that are amenable to targeted therapies.This article is highlighted in the In This Issue feature, p. 799
