Stromal score as a prognostic factor in primary gastric cancer and close association with tumor immune microenvironment

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Abstract

Background: Gastric cancer remains one of the major causes for tumor-related deaths worldwide. Our study aimed to provide an understanding of primary gastric cancer and prompt its clinical diagnosis and treatment. Methods: We integrated the expression profiles and overall survival information of primary gastric cancer in TCGA and GEO database and estimated the stromal score of each sample by the estimate R package. Stromal score and clinicopathologic characteristics associated with overall survival were analyzed by using Cox regression and the Kaplan-Meier method. Gene set enrichment analysis (GSEA) and KEGG analysis were performed to explore the potential molecular mechanism in TCGA dataset. The relationship between immunotherapy-associated markers or immune cell types and stromal score was explored by using Pearson correlation analysis. Results: A total of 796 samples were collected for the analysis. Patients with stromal score-high showed poor overall survival (P

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Mao, M., Yu, Q., Huang, R., Lu, Y., Wang, Z., & Liao, L. (2020). Stromal score as a prognostic factor in primary gastric cancer and close association with tumor immune microenvironment. Cancer Medicine, 9(14), 4980–4990. https://doi.org/10.1002/cam4.2801

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