Therefore, in order to research the relationship between HAUS1 and immune microenvironment in HCC and study its mechanism, TIMER2.0 database was adopted, revealing that HAUS1 was significantly associated with T cells CD4 +, T cells CD8 +, B cells, Neutrophils, Macrophages and Myeloid dendritic cells (Figure 3A - 3F). The gene discussed is CD4; the disease is hepatocellular carcinoma.