Home > FDA Warnings > FDA Warns Lupus Patients Treated with Rituxan Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on Nov 17, 2008 by Mahmood Pazirandeh, Views: 7542 Rituxan is approved for treatment of some other diseases, but not lupus. This FDA warning is for patients with lupus being treated with Rituxan. There is risk of a fatal infection of the brain called PML. Are you sending out information for people who have taken Rituxan? A friend of mine was taking this and it is frightening to know that she could get PML. Please make this information more widely known. mylove4u 11.6 years ago