PVT1 and ovarian carcinoma: To deeply investigate the phenomenon of ovarian cancer cell viability and apoptosis induced by circular PVT1, we conducted bioinformatics analysis and found circular PVT1 regulated miR-149-5p in the form of ceRNA, and miR-149-5p directly bond to 3'UTR of FOXM1 mRNA to repress FOXM1 expression.