RTOG 1239

RTOG 1239 was a clinical trial that evaluated the effectiveness of different radiation therapy strategies for treating early-stage breast cancer. The study examined whether partial breast irradiation—targeting only the area around where the tumor was removed—was as safe and effective as traditional whole-breast radiation. Patients were assigned to different treatment groups to compare outcomes such as cancer control, side effects, and cosmetic results over time. The trial’s findings helped clarify the viability of shorter, targeted radiation treatments, offering potential benefits like reduced treatment duration and improved quality of life without compromising cancer control.