It is noteworthy that the expression levels of SLC7A11-AS1 were significantly associated with the GC tumor-node-metastasis (TNM) stage and Ki-67 positive rate, and significantly decreased expression of SLC7A11-AS1 was observed in the stage III/IV GC tissues compared with the stage I/II GC tissues (Figure 1D). Here, SLC7A11 is linked to gastric cancer.