53 LUSPATERCEPT INCREASES HEMOGLOBIN AND REDUCES TRANSFUSION BURDEN IN PATIENTS WITH LOW OR INTERMEDIATE-1 RISK MYELODYSPLASTIC SYNDROMES (MDS): PRELIMINARY RESULTS FROM A PHASE 2 STUDY. (April 2015) - Platzbecker, U.; Germing, U.; Giagounidis, A.; Götze, K.; Kiewe, P.; Mayer, K.; Ottmann, O.; Radsak, M.; Wolff, T.; Haase, D.; Hankin, M.; Wilson, D.; et al.