CD4 and neoplasm: The abundance of CD46△13 and PSMC5△2.1 transcripts was higher in tumour tissues with CD4+ T cell infiltration or high M2 macrophage infiltration than in tissues with CD4- T cell infiltration or low M2 macrophage infiltration, while CD4613+ and PSMC52.1+ expression did not differ between tissues with high and low infiltration of immune cells (Figures 9I–P).