ASAP1 has been shown to be necessary for the in vitro invasive potential and in vivo metastatic potential of specific breast cancer cell lines including MDA-MB-231 cells (Onodera et al., 2005), while increased Prox1 expression promotes the transition of intestinal adenomas to high-grade dysplasia or carcinoma in situ [40]. Here, ASAP1 is linked to breast cancer.