SOX9 and ductal breast carcinoma in situ: Since it has already been described that the Sox9 gene is activated in ductal carcinoma in situ (DCIS) stem-like cells, and that miR-140 is a Sox9 regulator, frequently silenced in DCIS and activated after treatment with chemopreventive compounds, they tested if the SOX9/miR-140 pathway could be involved in SK capacity to repress pre-adipocyte differentiation.