Correlation Between Prognostic Biomarker and Immune Infiltrates in Various Types of Cancers Including Hepatocellular Carcinoma.

BACKGROUND

Solute carrier family 1 member 5 () is a major glutamine transporter and plays a key role in tumor growth. The main objectives of this study were to visualize the prognostic landscape of in multiple cancers and determine the relations between expression and tumor immunity.

METHODS

expression and its effect on tumor prognosis were analyzed using multiple online tools Oncomine, Gene Expression Profiling Interactive Analysis, PrognoScan, and Kaplan-Meier plotter with their own datasets as well as the data from The Cancer Genome Atlas. The correlations between and tumor immune infiltrates were determined TIMER.

RESULTS

expression was significantly higher in several types of cancers, including hepatocellular carcinoma (HCC), compared with corresponding normal tissues. High expression correlated with poor overall survival and with disease-free survival related to alcohol consumption. Moreover, expression correlated positively with the numbers of tumor-infiltrating B cells, CD4 T and CD8 T cells, macrophages, neutrophils, and dendritic cells in HCC and in lower-grade glioma (LGG). Also, expression showed strong correlations with diverse immune marker sets in HCC and LGG, indicating its role in regulating tumor immunity.

CONCLUSIONS

represents a useful prognostic biomarker in multiple cancers, and its expression correlates highly with tumor immune-cell infiltration, especially in HCC and LGG.