- Myelodysplastic syndrome (MDS): Any subtype; morphologic blasts must be less than 5% in an evaluable marrow (> 25% of normal cellularity for age); if blasts are 5% or more, patient requires induction chemotherapy pre-transplant to reduce blast count to less than 5%; patients who have a hypocellular marrow in the absence of excess blasts that is related to the underlying disease or as a result of treatment for MDS may also be eligible with the approval of the PI or designee