ESR1 and ovarian carcinoma: With regard to subtypes of ER α and ER β in epithelial ovarian cancer, as shown in Figure 3, ER α expression (HR = 0.78, 95% CI = 0.62-0.98) had a certain value in predicting a favorable OS, whereas the expression of ER β (HR = 1.21, 95% CI 0.85-1.74) was irrelevant with OS of epithelial ovarian cancer patients.