As shown in Figures 10A–I, the results showed a definite association between the mRNA expression of Arp2/3 subunits (ACTR2, ACTR3, ARPC1A, ARPC1B, ARPC2, ARPC3, ARPC4, ARPC5, and ARPC5L) and cancer stages; patients with more advanced cancer stages tended toward higher mRNA expression of Arp2/3 subunits. The gene discussed is ARPC4; the disease is cancer.