S8809-S9800-S9911TM- Biological Markers in Patients With Follicular Lymphoma Treated on Clinical Trial SWOG-8809, SWOG-9800, or SWOG-9911

OBJECTIVES: * Determine the prognostic significance of MUM-1, lymphoma-associated macrophages, and regulatory T cells in patients with follicular lymphoma treated on clinical trials SWOG-8809, SWOG-9800, or SWOG-9911 representing pre- and post-monoclonal antibody therapy protocols. * Determine whether these factors have similar prognostic significance in patients treated with chemotherapy alone vs chemotherapy and monoclonal antibody therapy on these clinical trials. OUTLINE: This is a multicenter study. Previously collected tissue samples from patients are analyzed by immunohistochemistry, gene expression profiling, and quantitative analysis for MUM1 expression, lymphoma-associated macrophages, FOXP3-positive regulatory T cells, CD68, and CD163. PROJECTED ACCRUAL: A total of 318 samples will be accrued for this study.