CDCA3 expression was positively correlated with the infiltrating levels of B cells (partial cor = 0.464, p = 9.01E − 20), CD8+ T cells (partial cor = 0.304, p = 9.81E − 09), CD4+ T cells (partial cor = 0.258, p = 1.23E − 06), macrophages (partial cor = 0.373, p = 1.10E − 12), neutrophils (partial cor = 0.248, p = 3.15E − 06), and dendritic cells (partial cor = 0.39, p = 8.83E − 14; Figure 4) in HCC. The gene discussed is CD4; the disease is hepatocellular carcinoma.