SAN FRANCISCO-Phase III data show that iseganan, a selectively decontaminating rinse for the oral mucosa, increases by at least 30% the proportion of patients who get through stomatotoxic chemotherapy without developing ulcerative oral mucositis. An error in the randomization system, however, resulted in about one third of the 323 patients being given at least one drug bottle opposite to their randomization assignment and greatly reduced the power of the study, noted Williamson Z. Bradford, MD, PhD. Dr. Bradford is director of clinical science at IntraBiotics Pharmaceuticals Inc., Mountainview, California. IntraBiotics manufactures iseganan and sponsored the trial.