PTEN and breast cancer: Consistent with our findings, previous research has also reported that the overexpression of miR-20b-5p in human BC tissues and cell lines inhibits the translation of the tumor suppressor PTEN mRNA, thereby enhancing the proliferation, migration, and wound-healing abilities of ZR-75-30, MCF-7, and T47D BC cells, while also suppressing apoptosis [44,45].