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Review

Immunotherapy for Soft Tissue Sarcomas: Anti-PD1/PDL1 and Beyond

1
Centre Léon Bérard, 28 Rue Laënnec, 69008 Lyon, France
2
Faculté de Médecine Lyon Est, Université Claude Bernard Lyon, 8 Avenue Rockefeller, 69008 Lyon, France
*
Author to whom correspondence should be addressed.
Cancers 2023, 15(6), 1643; https://doi.org/10.3390/cancers15061643
Submission received: 30 January 2023 / Revised: 3 March 2023 / Accepted: 5 March 2023 / Published: 7 March 2023
(This article belongs to the Topic Soft Tissue Sarcomas: Treatment and Management)

Simple Summary

Although immunotherapy has revolutionized the standard of care of many cancers, its efficacy in soft tissue sarcomas has been disappointing so far. Nevertheless, some recent studies have reported meaningful activity in a few selected histotypes, especially alveolar soft part sarcoma (ASPS). Furthermore, emerging biomarkers, such as the presence of tertiary lymphoid structures, seem to be predictive of the efficacy of immune checkpoint inhibitors. Finally, innovative therapeutic agents (especially adoptive T-cell therapies) and the combination of immunotherapeutic agents with other therapies such as tyrosine kinase inhibitors represent promising prospects.

Abstract

Sarcomas gather a heterogeneous group of mesenchymal malignant tumors including more than 150 different subtypes. Most of them represent aggressive tumors with poor prognosis at the advanced stage, despite the better molecular characterization of these tumors and the development of molecular-driven therapeutic strategies. During the last decade, immunotherapy has been developed to treat advanced cancers, mainly thanks to immune checkpoint inhibitors (ICI) such as anti-PD1/PDL1 and later to adoptive immune cell therapies. In this review, we aim to summarize the state of the art of immunotherapy in soft tissue sarcomas (STS). Overall, the clinical trials of ICI that included a wide diversity of STS subtypes reported limited efficacy with some outlying responders. Both emerging biomarkers are of interest in selecting good candidates and in the development of combination therapies. Finally, the recent breakthroughs of innovative adoptive therapies in STS seem highly promising.
Keywords: soft tissue sarcomas; immunotherapy; immune checkpoint blockade; adoptive T-cell therapies soft tissue sarcomas; immunotherapy; immune checkpoint blockade; adoptive T-cell therapies

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MDPI and ACS Style

Fazel, M.; Dufresne, A.; Vanacker, H.; Waissi, W.; Blay, J.-Y.; Brahmi, M. Immunotherapy for Soft Tissue Sarcomas: Anti-PD1/PDL1 and Beyond. Cancers 2023, 15, 1643. https://doi.org/10.3390/cancers15061643

AMA Style

Fazel M, Dufresne A, Vanacker H, Waissi W, Blay J-Y, Brahmi M. Immunotherapy for Soft Tissue Sarcomas: Anti-PD1/PDL1 and Beyond. Cancers. 2023; 15(6):1643. https://doi.org/10.3390/cancers15061643

Chicago/Turabian Style

Fazel, Mina, Armelle Dufresne, Hélène Vanacker, Waisse Waissi, Jean-Yves Blay, and Mehdi Brahmi. 2023. "Immunotherapy for Soft Tissue Sarcomas: Anti-PD1/PDL1 and Beyond" Cancers 15, no. 6: 1643. https://doi.org/10.3390/cancers15061643

APA Style

Fazel, M., Dufresne, A., Vanacker, H., Waissi, W., Blay, J.-Y., & Brahmi, M. (2023). Immunotherapy for Soft Tissue Sarcomas: Anti-PD1/PDL1 and Beyond. Cancers, 15(6), 1643. https://doi.org/10.3390/cancers15061643

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