We found that all of the Arp2/3 family members (ACTR2, ACTR3, ARPC1A, APRC1B, ARPC2, ARPC3, ARPC4, ARPC5, and ARPC5L) were significantly upregulated in HCC tissues (Figure 2). The gene discussed is ARPC4; the disease is hepatocellular carcinoma.