ZFAS1 and breast cancer: Tumor suppressor lncRNAs, such as GAS5, OPORS-AS1 and XIST, and oncogenic lncRNAs, namely H19, SRA, LSINCT5, Zfas1, Smad7, LOC554202, HOTAIR, SOX2OT, and FAL1, have been reported in BC [22].