As shown in Figure 1a, IL-15 was significantly higher in MDS plasma [n = 20, median (25th–75th) percentile = 9.8 (8.55–13.75) pg/mL] than in healthy control plasma [n = 20, median (25th–75th) percentile = 5.8 (4.25–6.85) pg/mL, p = 0.001]. Here, IL15 is linked to myelodysplastic syndrome.