We found that breast cancer cells lost adhering “cobblestone” shape and elongated with pseudopods by TGF-β, while overexpression of miR-30a could partly prevent EMT morphological change induced by TGF-β and retained their cobblestone-like epithelial morphology with tight cell-cell adhesion (Figure 1A). The gene discussed is TGFB1; the disease is breast carcinoma.