CD4 and neoplasm: Immunoinfiltration analysis showed that patients with EGFR mutation tends to have more tumor associated fibroblasts, common myeloid progenitor cells, hematopoietic stem cells, effector CD4+ T cells and natural killer T cells infiltration, and less memory B cells, naïve B cells, plasma B cells, plasmacytoid dendritic cells, memory CD4+ T cells, CD4+ helper T cells 2, naive CD8+ T cells, CD8+ T cells and central memory CD8+ T cells infiltration.