CASP1 and myelodysplastic syndrome: Using univariate regression analysis, we identified in MDS patients a positive correlation of Casp1 expression with neutrophil (rho = 0.57, p = 0.009) as well as monocyte counts (rho = 0.52, p = 0.02), in contrast to a negative correlation of PD-L1 expression with neutrophil counts (rho = −0.58, p = 0.007) and hemoglobin concentration (rho = −0.48, p = 0.045) (Figure 3; Table S3).