Children with cancerous tumors may have new hope for swift treatment under a study about to be launched at the University of Iowa. Dr. Sue O’Dorisio says a decade of research has already gone into the use of a particular cancer drug to determine if it is safe to use in children. *Dr. O’Dorisio is a professor of pediatrics at the U-of-I and is lead investigator in the study. The clinical trial has won a half-million dollar grant for two years from the National Cancer Institute. She says the U-of-I is the only institution in the U-S chosen for the study.O’Dorisio says her team will be experimenting with the drug Octreother, which has been used for several years in treating adults with cancer, but not children.The study will focus on children with tumors on their brains or nervous systems. About 20 children will be treated in Iowa City as part of the clinical trial, two of whom are from Iowa.