ABCA1 and cancer: We measured the gene expression of ABCA1 in a panel of breast cell lines, including a non-cancer breast epithelial outgrowth MCF10A [30], luminal-type breast cancer cells that exhibit an epithelial phenotype (SKBR3, BT474, MCF7, and T47D), and basal b-type breast cancer cells that are mesenchymal (MDA-MB-436, MDA-MB-231, and BT-549) [31] (Figure 1a).