KDM4A and hepatocellular carcinoma: KPNA2 was positively associated with KDM4A-AS1 expression (r = 0.4960, P < 0.0001, Supplementary Fig. 8B) and negatively correlated with miR-411-5p expression (r = −0.3867; P = 0.0002, Supplementary Fig. 8C) in HCC tissues.