SOX1 and breast cancer: SOX1 and SOX1-OT were co-detected in teratocarcinoma (NTera) and some breast cancer (MCF7, T47D) cell lines, but not in colon (HCT116, CaCo-2), some breast (MDA-MB-231/361, Hs578T) and cervical (HeLa) cancer cells (Fig. 7b).