NR2F1 and breast carcinoma: Multiple studies have revealed that NR2F1-AS1 is significantly overexpressed in breast cancer tissues and a variety of cell lines, including T47D, BT-474, MCF-7, MDA-MB-468, MDA-MB-231, BT-549, and HCC1937, as well as lung-dormant MCF10CA1h and CA1h-P2 cells [25–27].