The survival curves obtained by Kaplan–Meier analysis displayed in Fig. 2A showed that the presence of STS in epithelial ovarian tumors is related to a reduced survival of patients (log-rank test, p = 0.032), whereas the presence of androgen receptor did not modify the patients ́ survival during a the 6-years follow-up (Fig. 2B). Here, AR is linked to ovarian epithelial tumor.