Mycophenolate mofetil Recruiting Phase 2 Trials for Mantle Cell Lymphoma (MCL) / Lymphoplasmacytic Lymphoma / Acute Lymphocytic Leukemia (ALL) / Burkitt's Lymphoma / Myelodysplasia / Lymphoma, Hodgkins / chronic Chronic myelogenous leukemia / Biphenotypic/Undifferentiated Leukemia / Leukemia Acute Myeloid Leukemia (AML) / Relapsed Large Cell Lymphoma / recurrent Cutaneous T-cell lymphoma Treatment