Primary Outcome Measures:
- Safety of expanding donor-derived natural killer (NK) cells to > 100 cells/μL by day 14 after fludarabine, cyclophosphamide, and rituximab [ Designated as safety issue: Yes ]
Secondary Outcome Measures:
- Correlation of interleukin-15 production at day 0 with NK cells expansion [ Designated as safety issue: No ]
- Overall response (complete remission plus partial remission) rate at 3 months, as defined by International Working
Group for non-Hodgkin lymphoma and NCI Working Group guidelines for chronic lymphocytic leukemia [ Designated as safety issue: No ]
- Time to progression and overall survival [ Designated as safety issue: No ]
- Quantitative and qualitative toxicities [ Designated as safety issue: Yes ]
- Incidence of donor products that do not meet release criteria and the
NK cell numbers infused [ Designated as safety issue: No ]
- Correlation of clinical response rate with FcG receptor 3A genotype (CD16) on donor NK cells, donor/recipient KIR ligand matching status, and NK cells phenotype and function (ADCC) [ Designated as safety issue: No ]
- Correlation of pharmacodynamic and pharmacogenomic with NK cell expansion and disease response [ Designated as safety issue: No ]
OBJECTIVES:
Primary
- To determine if allogeneic natural killer (NK) cells infused following chemoimmunotherapy can be safely expanded in vivo with aldesleukin.
Secondary
- To determine if interleukin-15 production at day 0 correlates with NK cells expansion.
- To determine overall response rate at 3 months.
- To determine time to progression and overall survival.
- To characterize the quantitative and qualitative toxicities of this treatment plan.
- To determine the incidence of donor products that do not meet release criteria and the NK cell numbers infused.
- To correlate clinical response with donor/recipient KIR ligand matching status, FcG receptor 3A genotype, and NK cells phenotype and function
- To determine pharmacodynamic and pharmacogenomic markers and correlate them with NK cell expansion and disease response.
OUTLINE:
- Conditioning regimen: Patients receive rituximab IV over 6-8 hours on days -8, -1, 6, and 13; fludarabine IV on days -6 to -2; and cyclophosphamide IV on day -5.
- Allogeneic natural killer (NK) cell administration: Patients receive aldesleukin-activated haploidentical NK cells IV over less than 1 hour on day 0. Within 4 hours after allogeneic NK cell infusion, patients receive aldesleukin subcutaneously (SC) 3 times a week for 6 doses. Patients also receive filgrastim (G-CSF) SC beginning on day 14 and continuing until ANC is > 2,500/mm³ for 2 consecutive days.
Patients who achieve a complete or partial response at 3 months are eligible for allogeneic stem cell transplantation. Patients who achieve initial response at 3 months, clinically benefit from treatment, but subsequently relapse are eligible for retreatment provided all eligibility criteria are met.
Blood samples are collected before treatment on days -8, 0, 7, 14, and 28, and at months 2 and 3 for correlative studies.
After completion of study treatment, patients are followed monthly for 3 months and then every 3 months for up to 1 year.