NFIX mRNA level was significantly reduced in multiple databases including Curtis (Curtis et al., 2012), Zhao (Zhao et al., 2004), Kamoub and Gluck (Gluck et al., 2012; Karnoub et al., 2007) for invasive ductal breast carcinoma, invasive ductal and invasive lobular breast carcinoma, invasive ductal breast carcinoma and invasive breast carcinoma, respectively. Here, NFIX is linked to invasive ductal breast carcinoma.