HEIH and colorectal carcinoma: For example, the lncRNAs HEIH, AK023391, and PAGBC can promote CRC tumorigenesis (Huang et al., 2017; Wu et al., 2017; Cui et al., 2018), while the lncRNAs RPPH1, FEZF1-AS1, and u50535 can promote invasion and metastasis of CRC (Bian et al., 2018; Yu et al., 2018; Liang et al., 2019).