Abstract
Immunotherapy with programmed cell death 1 ligand 1 (PD-L1) blockade was effective in patients with NK/T-cell lymphoma. In addition to PD-L1, indoleamine 2,3-dioxygenase-1 (IDO1) is one of the most promising immunotherapeutic targets. High proportions of PD-L1 and IDO1 proteins were observed by immunohistochemistry (IHC) from 230 newly diagnosed patients with NK/T lymphoma with tissue samples from three cancer centers and were associated with poor overall survival (OS) in patients with NK/T lymphoma. Importantly, the coexpression of PD-L1 and IDO1 was related to poor OS and short restricted mean survival time in patients with NK/T lymphoma and was an independent prognostic factor in the training cohorts, and which was also validated in 58 NK/T lymphoma patients (GSE90597). Moreover, a nomogram model constructed with PD-L1 and IDO1 expression together with age could provide concise and precise predictions of OS rates and median survival time. The high-risk group in the nomogram model had a positive correlation with CD4 + T-cell infiltration in the validation cohort, as did the immunosuppressive factor level. Therefore, high PD-L1 and IDO1 expression was associated with poor OS in patients with NK/T lymphoma. PD-L1 and IDO1 might be potential targets for future immune checkpoint blockade (ICB) therapy for NK/T lymphoma.
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Data availability
Data used in this work can be acquired from the Gene Expression Omnibus (GEO; https://www.ncbi.nlm.nih.gov/geo/) (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5792272/bin/supp_2017.180430_haematol.2017.180430.DC1.html).
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Acknowledgements
This work was supported by the Sailing Program of Hunan Cancer Hospital (No. QH201902); Hunan Provincial Natural Science Foundation of China (No. 2021JJ30425); Hunan Provincial Natural Science Foundation of China (No. 2022JJ30026); the Changsha Municipal Natural Science Foundation (No. kq2014206); the Natural Science Foundation of Hunan Province National Health Commission (No. 20201659); the “Scientific Research Climbing Plan” of Hunan Cancer Hospital (grant number ZX2020003).
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YL: Designed the signature, analyzed the data, prepared the figures, revised the manuscript. KC: Analyzed the data, prepared the figures, interpreted the results, supervised the analyses, drafted the manuscript. BC: Collected the data, interpreted the results, revised the manuscript. RZ: Acquired the data, interpreted the results, revised the manuscript. YH: Acquired the data, interpreted the results, revised the manuscript. CW: Acquired the data, interpreted the results, revised the manuscript. MZ: Collected the data, revised the manuscript. XL: Collected the data, revised the manuscript. XC: Evaluate and scored slides, revised the manuscript. LX: Conceived and supervised the work, revised the manuscript. HZ: Conceived and supervised the work, drafted the manuscript. All the authors approved the final version.
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Li, Y., Chen, K., Chen, B. et al. Increased coexpression of PD-L1 and IDO1 is associated with poor overall survival in patients with NK/T-cell lymphoma. Leukemia 38, 1553–1563 (2024). https://doi.org/10.1038/s41375-024-02266-y
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DOI: https://doi.org/10.1038/s41375-024-02266-y
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