A Randomized, Double Blind, Placebo Controlled Study Evaluating the Efficacy and Safety of AMG 531 Treatment of Subjects With Low or Intermediate-1 Risk Myelodysplastic Syndrome (MDS) Receiving Lenalidomide.
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Supportive Care
Occurrence of a Clinically Significant Thrombocytopenic Event
Occurrence of one or more clinically significant thrombocytopenic events, defined as either Common Terminology Criteria for Adverse Events (CTCAE) v. 3 grade 3 or 4 thrombocytopenia starting from week 3 of cycle 1 or receipt of platelet transfusions starting from week 1 of cycle 1 and continuing through the end of treatment visit.
Treatment period through interim follow-up visit (up to 16 weeks)
United States: Food and Drug Administration