LINC00665 and lung cancer: LINC00665 is upregulated in HGSOC, it is also overexpressed in hepatocellular carcinoma (HCC) and lung cancer patients, but act as an oncogene with poor prognosis (Wen et al., 2018), which is contrary to our univariate Cox regression analysis (HR:0.89, 95% CI [0.73–1.1]).