Fig. 7

Correlation between the mean expression of Chk-α and PD-L1 in primary human cancers. The mean mRNA levels of Chk-α and PD-L1 in different tumor types showed a statistically significant correlation (p = 0.001, r = − 0.562) according to Pearson’s correlation coefficient. Data were obtained from the TCGA TARGET GTEx database. Numbers in parenthesis indicate the number of samples for each tumor type. Values are presented as dots, representing the mean value for each tumor type (color-coded), and the SEM for Chk-α (X-axis) and PD-L1 (Y-axis) (see also Supplementary Table 3, Supplementary Table 4, Supplementary Figure 3, and Supplementary Figure 4)