OBJECTIVES:
Primary
* To ascertain the safety of donor natural killer (NK) cells, generated from peripheral blood hematopoietic stem cells, when given as a single intravenous infusion in patients who have undergone HLA-haploidentical familial donor bone marrow transplantation (BMT).
* To determine the maximum tolerated dose of donor NK cells when given as a single infusion.
Secondary
* To determine the effectiveness of donor NK cell infusion in preventing tumor relapse and graft failure after HLA-haploidentical familial donor BMT.
OUTLINE: Patients receive donor natural killer cells as a single infusion over 1 hour.
Cohorts of 3-6 patients receive escalating doses of natural killer cells until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose at which 2 of 3 or 3 of 6 patients experience grade III toxicities or acute graft-vs-host disease.
