Previous studies have also reported FRA to be expressed on carcinomas of the ovary and endometrium, non-small cell lung adenocarcinoma, clear cell renal carcinoma, colorectal carcinoma, and breast carcinoma ([Weitman et al. 1992a]; [Weitman et al. 1992b]; [O’Shannessy et al. 2011];[O’Shannessy et al. 2012]; [Franklin et al. 1994];[Ross et al. 1994]; [Wu et al. 1999]; [Bueno et al. 2001]; [Parker et al. 2005]; [Shia et al.2008]). This evidence concerns the gene FOLR1 and breast carcinoma.