A Phase 1b/II, Multicenter, Open-Label, Dose-Escalation Study of Elotuzumab (Humanized Anti-CS1 Monoclonal IgG1 Antibody) in Combination with Lenalidomide and Dexamethasone in Subjects with Relapsed Multiple Myeloma. Elotuzumab (formerly HuLuc63)

For Phase 1 portion: To identify the maximum tolerated dose of elotuzumab given in combination with lenalidomide and dexamethasone in subjects with relapsed multiple myeloma. For Phase 2 portion: To evaluate the efficacy of elotuzumab given in combination with lenalidomide and dexamethasone in subjects with multiple myeloma after 1 to 3 prior therapies.