In LIHC, PRKDC expression was positively correlated with B cells (R = 0.324, P = 7.12e-10), CD8+ T cells (R = 0.205, P = 1.33e-04), CD4+ T cells (R = 0.358, P = 7.42e-12), macrophages (R = 0.405, P = 6.99e-15), neutrophils (R = 0.422, P =2.38e-16), and DCs (R = 0.42, P =5.73e-16), but was not associated with tumor purity. The gene discussed is CD4; the disease is neoplasm.