<prompt> Rituximab is a monoclonal antibody used for treatment of:-Non-Hodgkins lymphomaGastrointestinal Stromal TumorsChronic Myeloid LeukemiaAcute Myeloid Leukemia  <response>: Rituximab is a monoclonal antibody against CD20. It is used for treatment of: Non-Hodgkin lymphoma Chronic lymphoid leukemia Rheumatoid ahritis SLE Auto-immune hemolytic anemia Idiopathic thrombocytopenic purpura 