The UPR is executed by three ER stress sensors‐ inositol‐requiring enzyme 1 (IRE1), activating transcription factor 6 (ATF6), and RNA‐dependent protein kinase (PKR)‐like ER kinase (PERK) and all these ER stress sensors are activated by quercetin in ovarian cancer 77. The gene discussed is ATF6; the disease is ovarian carcinoma.