PVT1 and polycystic ovary syndrome: Liu et al. demonstrated that lncRNA PVT1 may regulate the progression of PCOS by modulating miR-17-5p-PTEN: overexpressed PVT1 could bind with and inhibit the expression of miR-17-5p in OGCs of PCOS, thereby preventing the inhibitory effects of miR-17-5p for its target gene PTEN and leading to the elevated expression of PTEN.