RAD51D and ovarian serous adenocarcinoma: The most common subtype of epithelial ovarian cancer is the high-grade serous ovarian cancer (HGSOC) subtype, which is mostly associated with BRCA1/2 mutations [5,6,7] and, in some cases, with mutations in the RAD51C (RAD51 Paralog C), RAD51D (RAD51 Paralog D), and BRIP1 (BRCA1 Interacting Helicase 1) genes [8].