4.3 Article

EZH2-regulated immune risk score prognostic model predicts outcome of clear cell renal cell carcinoma

Journal

TRANSLATIONAL ANDROLOGY AND UROLOGY
Volume 12, Issue 1, Pages 71-82

Publisher

AME PUBLISHING COMPANY
DOI: 10.21037/tau-22-817

Keywords

Enhancer of zeste homolog 2 (EZH2); immunomodulators; overall survival (OS); renal cell carcinoma (RCC)

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This study constructed an EZH2-regulated immune risk score prognostic model to predict the prognosis of ccRCC patients and provided a prospect for the clinical application of EZH2 inhibitors in fine-tuning T cell immune therapy.
Background: The enhancer of zeste homolog 2 (EZH2) plays an important role in the tumor microenvironment (TME), and EZH2 in shaping the epigenetic landscape of CD8+ T cell fate and function, with a particular emphasis on cancer. Here, high EZH2 expression always leads to less CD8+ T cell infiltration. However, clear cell renal cell carcinoma (ccRCC) is reportedly a hot tumor, with contradictory high EZH2 expression. Our goal was to construct a EZH2-regulated immune risk score prognostic model to predict ccRCC outcomes, and provide a prospect of clinical EZH2 inhibitors in fine-tuning T cell responses with immune therapy.Methods: We downloaded and analyzed The Cancer Genome Atlas (TCGA), Cancer Cell Line Encyclopedia (CCLE), TISIDB database, and WebGestalt for ccRCC patients, EZH2-related tumor-infiltrating lymphocytes and immunomodulators. R packages limma, BiocManager, and preprocessCore, etc. were downloaded to prepare CIBERSORT files, immune cells heatmap, multivariable Cox model and survival analysis. The EZH2-regulated immune risk model's prognostic ability was calculated by receiver operating characteristic (ROC) and area under the curve (AUC) analyses in R studio.Results: EZH2 was highly expressed and related to poor outcome in ccRCC. However, high-expression EZH2 was not related to a cool tumor. Of the 49 immunomodulators significantly regulated by EZH2, forest plot showed 26 immunomodulators signatures independently associated with overall survival. The EZH2-regulated immune-risk score prognostic model was an independent prognostic factor (AUC =0.816), especially combined with clinicopathologic parameters in ccRCC overall survival prediction.Conclusions: The EZH2-regulated immune-risk score prognostic model was an independent prognostic factor, with good accuracy and predictability, and could provide experimental data to the clinical area.

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