MD Anderson Cancer Center Initiates Orders of IsoRay's Cesium-131 for Intermediate Risk Prostate Cancer Study

IsoRay Inc. (NYSE: ISR) announced today that MD Anderson Cancer Center has initiated orders of Cesium-131 brachytherapy (internal radiation therapy) seeds as it continues its clinical research study investigating brachytherapy's ability to help control intermediate risk prostate cancer. “Intermediate risk” is a classification of early stage prostate cancer that has shown a tendency to recur following standard treatments including surgery and radiation therapy.

The current phase of the study will compare Cesium-131 to other, previously used isotopes. With other centers' prior successes using Cesium-131 in treating prostate cancer, principal investigator Dr. Steven J. Frank hopes to evaluate Cesium-131's effectiveness in addressing intermediate risk prostate cancer and its quality of life benefits. The study will also evaluate PSA response and the patient's return to urinary function baseline as well as normal lifestyle activities. High levels of PSA typically indicate the presence of prostate cancer.