SLC5A1 and hepatocellular carcinoma: SLC1A5 (Solute carrier family 1 member 5), a ferroptosis-related gene in the ceRNA network, is a major glutamine transporter that plays a key role in tumor growth, therefore, represents a useful prognostic biomarker in a variety of cancers, and its expression highly correlated with tumor immune-cell infiltration, especially in HCC and LGG (Zhu et al., 2022).