Figure 3. The relationship between SUSD4 and immune checkpoint genes in pan-cancer. Correlation Heatmap of SUSD4 with Two Types of Immune Checkpoint Pathway Genes: (A) Inhibitory and (B) Stimulatory. *p < 0.05, **p < 0.01, ***p < 0.001. P-values were adjusted by false discovery rate (FDR) method.