SLC7A9 and cancer: Additionally, an analysis of cancer stages revealed a significant correlation between the expression levels of SLC3A2, BSG, SLC7A5, SLC7A6, LCN2, and SLC7A9 and the pathological stages of ACC, with p-values of 0.28, 0.468, 0.00799, 0.0237, 0.0359, 0.264, 0.193, 0.81, and 0.0246, respectively (Figure 3B).