FUT8 and ovarian cancer: After comprehensive evaluation of the expression levels, prognosis values and cellular locations, only high expression of three lncRNAs (FUT8-AS1, LINC00665 and LINC01535) were significantly associated with poor prognosis of ovarian cancer, which were finally proved to be key upstream lncRNAs of the ceRNA network, suggesting that these lncRNAs play crucial in the occurrence and progression of ovarian cancer.