BRCA2 and cancer: Recent studies have confirmed that the HRR pathway, including its core‐related genes RAD51, is crucial in promoting cancer progression.[29] More importantly, HRR closely regulates PARPi resistance in OC.[30]RAD51 participates in DNA HRR by forming a complex with BRCA2 and other proteins and binding to the broken DNA region.[31] It is abnormally highly expressed in various tumors, including OC (GEPIA, http://gepia.cancer‐pku.cn).