ARID1A and hepatocellular carcinoma: To identify the abnormal expression of FXYD family member genes in HCC, we analyzed TCGA datasets, finding that ARID4B, ARID2, ARID3B, JARID2, ARID1A, ARID1B, and ARID3A were increased in HCC tissues compared to nontumor specimens (Figures 1(a)–1(c)), while ARID4A and ARID3C were decreased in HCC tissues compared to nontumor specimens (Figure 1(d)).