Patients who weigh < kg are not eligible Patients must weigh > ( kg) at the time of study entry Patients who weigh >= kg Patients must weigh > kg at the time of study entry Weigh >= kg. Subjects who weigh less than kg Patients must weigh greater than kg Must weigh greater than or equal to kg. Patient must weigh a minimum of kg The subject must weigh >= kilogram (kg). Participants who weigh > kg will be ineligible due to study drug limitations Age of years or older (patient must weigh ? kg) Weigh > kg Patients who weigh >= kg must be discussed with the principal investigator prior to enrolling on the protocol Subject must weigh at least kg Patients must weigh between - kg MDS low -int- risk as determined by IPSS score and confirmed by bone marrow examination within months prior to study entry Skeletally mature adolescents must weigh at least kg Must weigh kg The patient must weigh less than kg ( lb), which is the limit of the imaging couch Males and females must weigh >= Kg Weigh more than kg Patients who weigh > kg are excluded; in addition, patients who weigh > kg are excluded