To compare the difference in SLP-2 expression between epithelial ovarian cancer and benign and borderline ovarian tumours, we examined paraffin-embedded archived samples from 140 cases of epithelial ovarian cancer tissues, 20 borderline ovarian tumour tissues and 20 benign ovarian tumour tissues; additionally, 20 normal ovarian epithelial tissues were included as the control group. Here, STOML2 is linked to ovarian benign neoplasm.