As shown in Table 3, a restricted panel of inflammatory cytokines has been tested in ET vs. PV, with substantially no differences in terms of levels of IL-1α, IL-1β, IL-2, sIL-2R, IL-5, IL-6, IL-17, IL-23, IL-10, TNF-α, and INF-α. This evidence concerns the gene IL1B and acquired polycythemia vera.