Compared to the viability of CD34+ cells without MVs, incubation with MVs induced an increase in CD34+ cells viability in both groups (median increase: 7.9% [range 0.89–19.6] in HD-MVs vs.10.2% [range 4.42–24.68] with MDS-MVs). Here, CD34 is linked to myelodysplastic syndrome.