PCAT1 and cancer: Prostate cancer-associated transcript 1(PCAT1) was initially identified as an overexpressed lncRNA in prostate cancer tissues (Prensner et al., 2011), which has also been proved to be abnormally expressed in various malignant tumors and to play a carcinogenic role (Wen et al., 2016; Bi et al., 2017; Xu et al., 2017e; Huang et al., 2018; Liu et al., 2019a; Shen et al., 2019).