Recently, Brożyna et al. (2015) evaluated the expression of CYP27B1 in samples from ovarian cancer, metastases, and normal ovaries and found that the expression of CYP27B1 was significantly higher in normal ovarian epithelium than in ovarian cancer samples, especially in poorly differentiated primary and metastatic tumors. This evidence concerns the gene CYP27B1 and ovarian cancer.