Umbilical Cord Blood-Derived Natural Killer Cells, Elotuzumab, Lenalidomide, and High Dose Melphalan, Followed by Stem Cell Transplant in Treating Patients With Multiple Myeloma

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PRIMARY OBJECTIVES: I. To find the maximum tolerated dose (MTD) of umbilical cord blood (UCB)-derived natural killer (NK) cells. II. To determine efficacy by the percent of patients achieving very good partial remission (VGPR) + complete remission (CR) at 3 months post-transplant. III. To assess the...

PRIMARY OBJECTIVES: I. To find the maximum tolerated dose (MTD) of umbilical cord blood (UCB)-derived natural killer (NK) cells. II. To determine efficacy by the percent of patients achieving very good partial remission (VGPR) + complete remission (CR) at 3 months post-transplant. III. To assess the minimal residual disease rate 100 days post-transplant in high-risk patients. SECONDARY OBJECTIVE: I. To quantify duration of infused allogeneic donor UCB-derived NK cells in the recipient. OUTLINE: This is a dose-escalation study of UCB-derived NK cells. Patients receive elotuzumab intravenously (IV) over 2-5 hours on day -15 and -8, lenalidomide orally (PO) once daily (QD) on days -8 to -2, high-dose melphalan IV over 30 minutes on day -7, and UCB-derived NK cells IV over 1 hour on day -5. Patients undergo autologous stem cell transplant on day 0. After completion of study treatment, patients are followed up at 30, 60 and 100 days and 6 and 12 months.

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