• Safety and toxicity by NCI CTC toxicity scale in patients w/ recurr. or refract. CD20+ follicular lymphoma who are not candidates for high dose chemoradiotx and stem cell transplant during each infusion, weekly for 4 wks and then monthly for a yr [ Designated as safety issue: Yes ]
  

• Duration of in vivo persistence of adoptively transferred CD20-specific CD8+ T cell clones by flow cytometry and quantitative polymerase chain reaction (qPCR) during each infusion, weekly for 4 weeks, and then monthly for a year [ Designated as safety issue: No ]
  
• Trafficking of CD8+ CD20-specific T cell clones to lymph nodes by Gamma camera imaging during each infusion, weekly for 4 weeks, and then monthly for a year [ Designated as safety issue: No ]
  
• Development of host anti-scFvFc:zeta (and anti-NeoR) immune responses by ELISA and chromium release assays during each infusion, weekly for 4 weeks, and then monthly for a year [ Designated as safety issue: No ]
  
• Tumor responses to cyclophosphamide, vincristine, and prednisone (CVP) and to cytotoxic T-lymphocyte (CTL) infusions by Cheson criteria during each infusion, weekly for 4 weeks, and then monthly for a year [ Designated as safety issue: Yes ]
  

OBJECTIVES:

Primary

• Determine the safety and toxicity of cellular immunotherapy with autologous CD8+ cytotoxic T-lymphocyte clones after chemotherapy comprising cyclophosphamide, vincristine, and prednisone in patients with relapsed or refractory CD20+ indolent lymphomas or mantle cell lymphoma.

Secondary

• Determine the duration of in vivo persistence of adoptively transferred CD20-specific CD8+ cytotoxic T-lymphocyte clones in the absence and presence of subcutaneous interleukin-2 in these patients.
• Assess the trafficking of CD8+ cytotoxic T-lymphocyte clones to lymph nodes in these patients treated with this regimen.
• Determine immune response and tumor response in patients treated with this regimen.

OUTLINE: This is an open-label, pilot study.

• Leukapheresis: Patients undergo leukapheresis. Selected CD20-specific CD8+ cells are cultured to expand the cytotoxic T lymphocytes (CTL), which are then cloned.
• Chemotherapy:

Patients receive oral cyclophosphamide and oral prednisone on days 1-5 and vincristine IV on day 1. Courses repeat every 3-4 weeks for a total of 6 courses.

• Immune cell infusion:

Beginning 4 weeks after the last course of chemotherapy (and lymph nodes ≤ 5 cm diameter or ≤ 5,000 circulating CD20+ lymphocytes/mm^3), patients receive autologous CD8+ CTL clones IV over 30 minutes. Courses repeat every 2-5 days for a total of 3 courses in the absence of disease progression or unacceptable toxicity. The last 6 patients receive interleukin-2 subcutaneously every 12 hours for 14 days, beginning 2 hours after the last infusion of CD8+ CTL clones.

After course 2 or 3 of immune cells, all patients undergo surgical lymph node biopsy to determine if immune cells are moving to the lymph nodes.

Patients are followed monthly for 1 year and then annually for 2 years.

PROJECTED ACCRUAL: A total of 12 patients will be accrued for this study within 4 years.