217 DEFINING LIKELIHOOD OF FUTURE RESPONSE IN PATIENTS WITH DEL(5Q) MYELODYSPLASTIC SYNDROMES (MDS) TREATED WITH LENALIDOMIDE. Issue 1 (April 2015) - Gerds, A.T.; List, A.F.; Giagounidis, A.; Hellström-Lindberg, E.; Li, J. Shiansong; Swern, A.S.; Sugrue, M.M.; Fenaux, P.; Sekeres, M.A.