A new research paper was published in Oncotarget on July 28, 2022, entitled, “Chemoradiation-induced alteration of programmed death-ligand 1, CD8+ tumor-infiltrating lymphocytes and mucin expression in rectal cancer.”
DNA damage and resulting neoantigen formation is considered a mechanism for synergy between radiotherapy and PD-1/PD-L1 pathway inhibition to induce antitumor immune response.
In a new research study, by Marina Baretti, Qingfeng Zhu, Wei Fu, Jeffrey Meyer, Hao Wang, Robert A. Anders, and Nilofer S. Azad from Johns Hopkins University School of Medicine, researchers investigated neoadjuvant chemoradiotherapy (nCRT)-induced changes in CD8+ tumor infiltrating lymphocyte, PD-L1 and mucin expression in rectal cancer patients.
“The synergistic effects of CRT and PD-1/PD-L1 immunotherapy has been supported by several retrospective analyses in different cancer types, including esophageal cancer, bladder cancer, and lung cancer also support[ed] [14, 21, 22]. However, the role of nCRT to interact synergistically with immune checkpoint inhibitor treatment to improve tumor control in rectal cancer remains uncertain.”
Full press release - https://www.oncotarget.com/news/pr/oncotarget-chemoradiation-induced-alteration-of-programmed-death-ligand-cd-tumor-infiltrating-lymphocytes-and-mucin-expression-in-rectal-cancer/
DOI: https://doi.org/10.18632/oncotarget.28255
Correspondence to: Marina Baretti – Email: mbarett1@jh.edu
Keywords: programmed death ligand 1, tumor-infiltrating lymphocytes, immune checkpoints, colorectal cancer, neoadjuvant chemoradiotherapy
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