The non-invasive ER+ breast cancer (MCF7) and Basal-A TNBC (BT20 and HCC1806) cell lines had significantly increased migration to the obASCs (BT20: 131.3 ± 10.9 migrated cells) compared to lnASCs (BT20: 40.9 ± 5.4) or CCM (BT20: 42.5 ± 4.3) (Fig. 1). Here, ESR1 is linked to breast carcinoma.