As shown in Fig. 1E, there was 7 lncRNAs (LINC01004, LINC00673, MIR4435-2HG, A2M-AS1, MALAT1, PCBP1-AS1, and LINC00152) significantly negatively correlated with HCC patients’ prognosis, in which LINC00673 [26], MIR4435-2HG [27], MALAT1 [28], PCBP1-AS1 [29], and LINC00152 [30] have been reported to promote the progression of hepatocellular carcinoma, demonstrating the important oncogenic function of SE-associated lncRNAs. Here, A2M is linked to hepatocellular carcinoma.