CD4 and neoplasm: In addition, when we performed a required analysis on the TIMER database, PSMG member genes also indicated relevance to the immune infiltration profiles of LUAD, which included six various tumor-infiltrating immune cell types grouped into two separate groups: B cells, CD4+ T cells, and CD8+ T cells that belong to lymphoid lineage cells, together with neutrophils, macrophages, and DCs that belong to myeloid lineage cells (Figure 4).