The results showed that the level of immune cell infiltration was significantly correlated with CCT2 expression in most cancer types, and CCT2 expression was negatively correlated with the level of most immune cell infiltration processes, but the CCT2 expression levels were negatively correlated with the level of T cell CD4+ Th2 and common lymphoid progenito cell infiltration (Figure 4A). Here, CD4 is linked to cancer.