More specifically, patients with HCC (median: 12.198 and interquartile range: 3.112–18.996) showed a remarkably higher level of Mex3a mRNA than patients with CHB (median: 1.623, interquartile range 0.066–6.000, and p < 0.001) and HCs (median: 0.329, interquartile range 0.031–1.547, and p < 0.001). The gene discussed is MEX3A; the disease is hepatocellular carcinoma.