MMP9 and inflammatory breast carcinoma: In inflammatory breast cancer cell lines, depletion of AXL-stabilizing protein TIG1 reduces the expression of Matrix metalloproteinase 9 (MMP9), which has been identified as an essential regulator for the AXL-mediated invasion (Tai et al., 2008; Koorstra et al., 2009; Han et al., 2013; Wang et al., 2013).