Fig. 5.

Correlation between DOK family gene mRNA expression levels and acknowledged immune checkpoints’ mRNA expression in multiple tumors from TCGA database. (A) Correlation analysis of DOK1 expression level, (B) Correlation analysis of DOK2 expression level, (C) Correlation analysis of DOK3 expression level, (D) Correlation analysis of DOK4 expression level, with immune checkpoint gene levels in human cancer. The lower triangle in each tile indicates coefficients calculated by Pearson’s correlation test, and the upper triangle indicates log10 transformed P-value. *P<0.05; **P<0.01; *** P<0.001.