Bioinformatic-based identification of 3 immune-related genes for prognostic in breast invasive carcinoma
Cui, X.; Song, S.; Zhang, W.; Wang, D.; Fang, Z.
Show abstract
Breast invasive carcinoma (BRCA) is the leading cause of cancer deaths in female worldwide. Immune cell infiltration is considered to be crucial factor for the success or failure of BRCA therapy. As we all known, early diagnosis of breast cancer can greatly improve the survival rate of patients. Hence, to screen effective biomarkers for breast cancer immunotherapy might be extremely important. In this research, we identified an immune-related, three-gene biomarkers for prognosis of BRCA. We obtained altogether 192 differentially expressed genes (DEGs) from GEO datasets (GSE22820, GSE36295) and GEPIA database, followed by the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. We screened 3 immune-related candidate biomarkers composing by CXCL2, CXCL9 and RBP7 that improves survival prediction outcome in BRCA. Kaplan-Meier analysis was conducted to analyze the patient survival based on 3 genes. In addition, we found that selected biomarkers were closely connected with infiltration levels of different tumor immune cells. Moreover, principal component analysis showed three biomarkers could effectively distinguish tumor samples from normal samples. In summary, these findings suggested that CXCL2, CXCL9 and RBP7 are viable prognostic and diagnostic biomarkers and provide new ideas for immunotherapy solutions of BRCA in the future.
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