STOML2 and ovarian benign neoplasm: High SLP-2 protein expression was detected in 72.9 % (102/140) of epithelial ovarian cancer samples, in 45.0 % (9/20) of borderline ovarian tumour tissues, in 30.0 % (6/20) of benign ovarian tumour tissues, and in none (0/20) of the normal ovarian epithelial tissues (Table 2, Figs. 4 and 5).