As shown by previous studies, SF-1 is overexpressed in stromal cells from endometriotic tissues compared to eutopic endometrial tissues, contributing substantially to endometriosis (Bulun et al., 2005; Borghese et al., 2008; Utsunomiya et al., 2008; Attar et al., 2009). This evidence concerns the gene SF1 and endometriosis.