MALAT1 and ovarian cancer: LncRNA LINC00319 intensified the progression of ovarian cancer via the miR-423-5p/NACC1 signaling [7], lncRNA MALAT1 accelerates the proliferation and metastasis of ovarian cancer through regulating the PI3K/AKT pathway [13], and lncRNA PVT1 facilitates ovarian cancer progression by targeting miR-214 [4], for example.