Potential Significance: Myelodysplastic syndromes (MDS) are malignant hematopoietic stem cell disorders. Prognosis can be estimated by use of the International Prognostic Scoring System (IPSS) which divides patients into low, intermediate-1, intermediate-2, and high-risk groups with corresponding median survival times of 5.7 years, 3.5 years, 1.2 years, and 0.4 years, respectively. There is currently no standard treatment for MDS and management is often purely symptomatic with transfusion of blood products and antibiotic treatment of infections.