TBX21 and neoplasm: High density of CD4+FOXP3+ T cells and CD8+ T cells (High‐High) independently predicted prolonged patient survival. These High‐High tumours were coupled with an increased IFN‐γ response, antigen presentation, DCs differentiation and PDL1 upregulation in the local tumours, as well as enrichment of Tbet+ CD4+ T cells and central memory CD4+ T cells circulating in the peripheral blood.