NCT01419795 2017-07-27Lenalidomide With or Without Rituximab in Treating Patients With Progressive or Relapsed Chronic Lymphocytic Leukemia, Small Lymphocytic Lymphoma, Prolymphocytic Leukemia, or Non-Hodgkin Lymphoma Previously Treated With Donor Stem Cell TransplantFred Hutchinson Cancer CenterPhase 2 Terminated3 enrolled 10 charts