Existing evidence suggested that IHC biomarker expressions, including PR, ER, p53, and Vimentin, might exert a prognostic impact on the survival of females with OC [40,41], while WT-1 is a highly specific and sensitive IHC biomarker for diagnosing ovarian high-grade serous carcinomas [42]. Here, PGR is linked to serous adenocarcinoma.