SLC16A1 and breast cancer: The downregulated SLC16A1-AS1 expression was further confirmed in BC cells, which showed that SLC16A1-AS1 expression was considerably lower in MCF7, MDA-MB-231, MB453, and BT474 cells versus MCF 10A cells (Figure 1C), and SLC16A1-AS1 expression was the lowest in MCF7 and MDA-MB-231 cells.