In hepatocellular carcinoma, the expression of some BrD-family coding genes (BRD1/2/3/4/7/8/9) were significantly positively correlated with the immune-infiltrating degree of B cells, CD8+ T cells, CD4+ T cells, macrophages, neutrophils, and DCs [25]. The gene discussed is BRD1; the disease is hepatocellular carcinoma.