STAT3 and ovarian cancer: Quercetin has induced autophagy and apoptosis through ER (endoplasmic reticulum) stress via the p‐STAT3/Bcl‐2 axis in ovarian cancer SKOV‐3 cells (Liu et al. 2017; Ren et al. 2015; Shafabakhsh and Asemi 2019; Vafadar et al. 2020).