Prior therapy: Disease-specific therapy must be stopped at least 14 days prior to protocol Cycle 1 Day 1 (C1D1) and recovery of treatment-associated toxicity to greater than grade 2 is required prior to initiation of protocol therapy. Patients may have received prior DLI, but the last dose must be at least 28 days prior to C1D1 and there must be no active graft versus host disease (GVHD) greater than grade 1 acute or extensive chronic. Systemic immunosuppression must be stopped at least 28 days prior to protocol C1D1 and there must be no active GVHD greater than grade 1 acute or extensive chronic. There is no time restriction in regard to prior intrathecal chemotherapy provided there is complete recovery from any acute toxic effects of such. Patients receiving hydroxyurea are allowed.