Regarding the “HALLMARK_INFLAMMATORY_RESPONSE” gene set, MAFB and MAF were found to oppositely regulate the expression of a cluster of chemokine-encoding genes (CXCL10, CCL2, CCL7, CXCL9) that are associated to the COVID-19 “cytokine storm” (25). The gene discussed is MAFB; the disease is COVID-19.