4. Full recovery from acute toxicities of prior anti-MM therapies. 5. Peripheral blood (Natural Killer) NK cells (Absolute CD16, 56)≥ 0.05 x 109/L (50/mm3) 6. Detectable binding of Anti-KIR (1-7F9) to subject NK cells 7. Age ≥ 18 years 8. Eastern Cooperative Oncology Group (ECOG) performance status of 0,1 or 2 9. Clinical laboratory values at screening: