IsoRay's Cesium-131 Radiation Therapy Shows Favorable Outcomes In Prostate Cancer

Investigators from the University of Pittsburgh School of Medicine have published a clinical study demonstrating favorable outcomes for localized intermediate-risk prostate cancer patients treated with IsoRay Inc's ISR Cesium-131 brachytherapy known as Cesium Blu.

• Brachytherapy is a localized internal radiation therapy in which seeds, ribbons, or capsules containing a radiation source are placed in or near the tumor.
• The study analyzed the outcomes for 335 intermediate-risk prostate cancer patients treated with Cesium-131 brachytherapy.
• Study patients had significant follow-up time. 
• The study found that both the "favorable" (147 patients) and "unfavorable" (188 patients) intermediate-risk groups demonstrated excellent biochemical outcomes. 
• Also See: IsoRay's Cesium-131 And Surgical Resection Shows Promise In Recurrent Head & Neck Cancer.
• Those outcomes were 97.6% and 91.4%, respectively, at five years. For 135 "favorable" patients treated with Cesium-131 implant alone, the outcome was 98.1%.
• Investigators used Cesium-131 to decrease the duration of acute toxicity compared to other radioisotopes because of its shorter half-life.
• Price Action: ISR shares are up 6.65% at $0.36 during the market session on the last check Wednesday.