The purpose of this study is to assess the effect of 13 weeks of darbepoetin alfa treatment on erythroid response in anemic subjects with low risk Myelodysplastic Syndrome (MDS).

Eligibility Criteria: General: - Low risk MDS (low or intermediate-1 risk as defined by IPSS) and FAB classification of RA, RARS, or RAEB with blasts less than or equal to 10% determined via a bone marrow biopsy and CBC - Adequate iron stores determined by bone marrow film or section staining for iron via a bone marrow biopsy - ECOG Performance status score of 0, 1, or 2 Laboratory: - Local laboratory screening Hgb less than or equal to 11.0g/dL - Adequate renal function (serum creatinine concentration less than or equal to 2.0 mg/dL) - Adequate liver function (total bilirubin less than or equal to 2 times, ALT less than or equal to 3 times, and AST less than or equal to 3 times the upper limit of the respective normal range) Ethical: - Must be 18 years of age or older - Provide written Institutional Review Board (IRB)-approved informed consent before any screening procedures are performed