NEAT1 and ovarian carcinoma: In the included studies from present study, only one study from Li et al., 2015 reported the association between increased NEAT1 expression and DFS in colorectal cancer [11], and only one study from Adriaens et al., 2016 reported the association between increased NEAT1 expression and PFS in ovarian cancer [19], and thus meta-analysis was not performed in these two studies.