LIPG and breast carcinoma: Figure 1E shows that LIPG was pulled down 3-fold more in the MS2-DANCR cells than the MS2 cells. The ectopic overexpression of LIPG in luminal breast cancer cell line MCF-7 (hereafter abbreviated MCF7OE) promotes migration, stemness, and basal/EMT features [7]. Similar results were observed in MCF7OE cells (Supplementary Figure S1). To determine a specific DANCR-binding region, pcDNA3-MS2-DANCRwt (1–855 bp) was deleted into DANCR1 (219–855 bp), DANCR2 (429–855 bp), and DANCR3 (639–855 bp). These constructs were transfected into MCF7OE cells (Supplementary Figure S2).