In the constructed FR-IncRNAs risk model, it was demonstrated that the expression of MKLN1-AS and LINC01224 was significantly upregulated in cell lines and HCC tissues and that the higher expression of MKLN1-AS and LINC01224 was associated with poorer prognosis (Dan Gong et al., 2020; Gao et al., 2020). Here, LINC01224 is linked to hepatocellular carcinoma.