Based on prior work demonstrating the importance of the CXCL9 chemokine in cDC1-mediated responses to anti–PD-1 therapy, we also examined CXCL9 expression and observed a significant reduction in CXCL9 expression in MDS cDC1s compared with HD.46 The gene discussed is CXCL9; the disease is myelodysplastic syndrome.