We should note here that our whole-tumor RNA-sequencing data (Figure 1E) shows that expression of PD-1 (Pdcd1) follows no consistent trend upon MPS1i treatment, and that Pdcd1 was not detected in our single-cell RNA-sequencing data for macrophage cultures (Figure 1G) – motivating further study. The gene discussed is PDCD1; the disease is neoplasm.