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PD-1 and PD-L1 Expression in Endometrial Cancer: A Systematic Review of the Literature.

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The expression level of Programmed Death-Ligand 1 (PD-L1) determined by the immunohistochemical method is currently approved to test the potential efficacy of immune-checkpoint inhibitors and to candidate patients with Non-Small Cell Lung Cancer (NSCLC) for treatment with immunotherapeutic drugs. As part of the CORELAB (New prediCtivebiOmaRkers of activity and Efficacy of immune checkpoint inhibitors in advanced non-small cell Lung cArcinoma) project, aimed at identifying new predictive and prognostic biomarkers in NSCLC patients receiving immunotherapeutic drugs, we investigated the role of circulating tumor DNA (ctDNA) molecular characterization as an additional predictive biomarker. We analyzed plasma ctDNA by targeted Next Generation Sequencing in a subset of 50 patients at different time points.

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COX inhibitors are frequently used for pain management during the perioperative period and may influence tumor progression and the tumor microenvironment by modulating inflammation and immune responses. This study investigates the effects of COX inhibitors on tumor growth and the immune microenvironment. In vivo experiments demonstrate that COX inhibitors can reduce tumor cell growth, elevate PD-L1 expression on tumor cells, and enhance the proportion of myeloid cells within the tumor immune microenvironment.

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Immune-checkpoint-inhibitors (ICI) target key regulators of the immune system expressed by cancer cells that mask those from recognition by the immune system. They have improved the outcome for patients with various cancer types, such as melanoma. ICI-based therapy is frequently accompanied by immune-related adverse side effects (IRAEs).

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