EMX1 and leiomyosarcoma: To explore the role of EMX, we first selected three different low-passage sarcoma cell lines from different tissues of origin; two sarcoma lines expressed low levels of EMX1 and EMX2 (Supplementary Fig. S1), as models to study the effects of EMX overexpression: AA (leiomyosarcoma) and AW (liposarcoma).