CD34 and myelodysplastic syndrome: Our findings revealed that primary VEXAS CD34+ cells exhibit significantly higher sensitivity to TAK‐243, with a half maximal inhibitory concentration (IC50) of 22 nM, compared to MDS (133 nM, p = 0.0047) and healthy cells (192 nM, p = 0.0005) as demonstrated by decreasing cell viability (Figure 1A,B).