BMPER and borderline epithelial tumor of ovary: Meanwhile, the rate of positive BMPER expression in ovarian epithelial borderline tumors was higher than that in ovarian epithelial benign tumors and normal ovarian tissues (P < 0.05), and its high expression rate was higher than that in normal ovarian tissues (P < 0.05) (Table 2 and Figures 1(a) and 1(b)).