DLG5 belongs to the membrane-associated guanylate kinase (MAGUK) superfamily and is considered to play multiple roles in various cancers, including an ability to suppress breast cancer stem cell-like characteristics and restore tamoxifen sensitivity by inhibiting TAZ expression22 and to decrease the formation and function of invadopodia in human hepatocellular carcinoma via Girdin and Tks543. This evidence concerns the gene CCDC88A and breast cancer.