In ovarian cancer, our current study showed a different trend of DNMT associations with prognosis, i.e., the overall survival (OS) and disease-free survival (DFS) of ovarian cancer patients were better with expression of DNMT1 and DNMT3b proteins compared to the patients without expression of DNMT1 and DNMT3b proteins. This evidence concerns the gene DNMT3B and ovarian carcinoma.