Fig. 2

Association of PD-L1 expression and tumor immune infiltration in FTC. a Correlation between PD-L1 expression and TME score (immune score and ESTIMATE score) in FTC. b Comparisons of immune cells between the PD-L1 high and low expression groups in TCGA. c The expression levels of inhibitory checkpoint molecules, including PD-1, PD-L2, CTLA-4, TIM-3, LAG-3, VISTA, TIGIT, KIR and BTLA, between the two groups of FTC patients. d The IPS for immune checkpoint inhibitors in the PD-L1 high expression group was significantly higher, suggesting that patients with higher PD-L1 expression would have a better response to immune checkpoint inhibitors. * p < 0.05, ** p < 0.01, *** p < 0.001