<prompt> Rituximab is used in all EXCEPT:Non Hodgkin lymphomaParoxysomal nocturnal hemoglobinureaRheumatoid ahritisSystemic lupus erythematosis  <response>: RITUXIMAB: It is a chimerized MAb that binds to CD20 B cell antigen expressed on surface of B lymphocytes and B cell lymphomas. It is indicated in: 1B cell lymphoma 2Non hodgkin lymphoma 3Chronic lymphocytic leukemia 4Auto immune diseases ESSENTIALS OF MEDICAL PHARMACOLOGY K.D.TRIPATHI SEVENTH EDITION PAGE NO:872 