PSMB7 and neuroendocrine carcinoma: Gene sets associated with immune cell function revealed that genes associated with T cell function and NK cell function and genes associated with cytolytic activity like GZMA, GZMK, and PRF1 and antigen presentation (PSMB7, HLA-DMB) were lower expressed in NET G3/NEC and NET G1/G2 compared to healthy tissue.