
CHARLOTTESVILLE, Virginia-Administering camptothe-cins, such as irinotecan (Camptosar), or giving 5-fluorouracil (5-FU) at the right time of day might reduce toxicity and permit use of significantly higher doses. Tyvin A. Rich, MD, Department of Radiation Oncology at the University of Virginia in Charlottesville, Virginia, discussed this chronotolerance data during a workshop sponsored by the University of Texas M. D. Anderson Cancer Center and Pharmacia Oncology.
