 The investigational drug in this program is elotuzumab. Elotuzumab is known as BMS-901608. Elotuzumab is a manufactured protein directed against a target found on multiple myeloma cells. Lenalidomide is currently approved for patients with multiple myeloma. Melphalan and cyclophosphamide, the drugs used during stem cell collection and transplant, are also approved by the U.S. FDA. Melphalan is an FDA-approved chemotherapy for multiple myeloma and is used as high-dose treatment prior to stem cell transplantation. Cyclophosphamide is an FDA-approved chemotherapy that may be used, either alone, or in combination with other drugs to treat multiple myeloma. 