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Open Access 20-11-2023 | Esophageal Cancer | Review

Opportunities and challenges in combining immunotherapy and radiotherapy in esophageal cancer

Authors: Xinyu Zhang, Xinsheng Cai, Chaoguang Yan

Published in: Journal of Cancer Research and Clinical Oncology

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Abstract

Background

Immunotherapy has shown promise in the treatment of esophageal cancer, but using it alone only benefits a small number of patients. Most patients either do not have a significant response or develop secondary drug resistance. The combination of radiotherapy and immunotherapy appears to be a promising approach to treating esophageal cancer.

Purpose

We reviewed milestone clinical trials of radiotherapy combined with immunotherapy for esophageal cancer. We then discussed potential biomarkers for radiotherapy combined with immunotherapy, including programmed cell death-ligand 1 (PD-L1) status, tumor mutation burden (TMB), tumor-infiltrating lymphocytes, ct-DNA, imaging biomarkers, and clinical factors. Furthermore, we emphasize the key mechanisms of radiation therapy-induced immune stimulation and immune suppression in order to propose strategies for overcoming immune resistance in radiation therapy (RT). Lastly, we discussed the emerging role of low-dose radiotherapy (LDRT) , which has become a promising approach to overcome the limitations of high-dose radiotherapy.

Conclusion

Radiotherapy can be considered a triggering factor for systemic anti-tumor immune response and, with the assistance of immunotherapy, can serve as a systemic treatment option and potentially become the standard treatment for cancer patients.
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Metadata
Title
Opportunities and challenges in combining immunotherapy and radiotherapy in esophageal cancer
Authors
Xinyu Zhang
Xinsheng Cai
Chaoguang Yan
Publication date
20-11-2023
Publisher
Springer Berlin Heidelberg
Published in
Journal of Cancer Research and Clinical Oncology
Print ISSN: 0171-5216
Electronic ISSN: 1432-1335
DOI
https://doi.org/10.1007/s00432-023-05499-z

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