Safety and Efficacy Study of Donor Natural Killer Cells Given After Haploidentical Hematopoietic Cell Transplantation

"* Donor NK cells will be generated at the GCP laboratory at Asan Institute of Life Science by a team from Stem Cell Research Center, Korea Research Institute of Bioscience and Biotechnology.~* The patients will receive donor NK cell infusion (DNKI) around on days 6 and 9 (generated from the first collection), and around on days 13 and 20 (generated from the second collection).~* For DNKI to be given on days 6 and 9, a 3-patient cohort each will receive escalating dose of 2x10e7/kg, 5x10e7/kg, 1x10e8/kg, and 1-4 x10e8 cells.~* The dose of DNKI to be given on days 13 and 20 will be 1-4 x10e8/kg."