Fludarabine and Rituximab for the Treatment of Marginal Zone Non-Hodgkin's Lymphoma

Objectives: Primary \- To estimate the objective response rate. Secondary * To assess the safety. * To describe the progression-free survival at one year. * To examine the association between clonal cytogenetic abnormalities identified by FISH, and the objective response rate as well as the progression-free survival at one year. Target enrollment was 30 eligible patients. An 80% objective response rate at 1 month restaging after 6 cycles was considered as evidence of activity in this patient population while 60% was not considered activity. If at least 22 patients achieved objective response the treatment would be considered promising. With 30 eligible patients, the probability of observing this was 0.87 assuming a true rate of 80% and 0.09 assuming a true rate of 60%.