CD8A and neoplasm: Our research used CIBERSORT, ssGSEA, and MCP counter to evaluate the level of immune cell infiltration to verify the previously reported results of immune cell functions and phenotypes in patients with PTC from the perspective of proportion and abundance (Figure 4), and partially supports the evidence that T follicular helper cell, central memory CD8 T cell, and immature DC were significantly increased in the low-risk group to exert an anti-tumor effect.