TMEPAI protein in MDA-MB-231 triple negative breast cancer cells is induced by TGF-β in a concentration dependent manner as determined by exposing cells to graded amounts of TGF-β (0.1 0.25, 0.5, 1, 1.5 and 2 ng per ml) for 24 h. Here, PMEPA1 is linked to triple-negative breast carcinoma.