The upregulated genes in PTCL‐TBX21 included Th1‐related genes, including CXCR3, CD38, INFG, CXCL9, CXCL11, IL27, and genes associated with tumor immunity, such as CD274 (PD‐L1), LAG3, and IDO1 (Figure 3B). This evidence concerns the gene LAG3 and neoplasm.