Based on the ssGSEA algorithm to assess the degree of tumor immune infiltration, the results also showed a significant positive correlation between E2F4 expression levels and the abundance of Th2 cells, Tcm, and Tgd cells and a negative correlation with the abundance of NK CD56dim cells, CD8+ T cells, DC, T cells, B cells, Treg, mast cells, pDC, iDC, TFH, cytotoxic cells, and Th17 cells (Figure 6(g)). Here, ABCA1 is linked to neoplasm.