Chicago—How should oncologists gauge whether to send patients for radiation therapy (RT) after breast-conserving surgery for ductal carcinoma in situ (DCIS)? Forget ordering a 12-gene assay, and start by looking at their age, according to Kimberly Van Zee, MD, a surgical oncologist at Memorial Sloan Kettering Cancer Center (MSKCC), in New York City. Her models show that women younger than 40 years of age have their cancers recur at a rate seven times higher than women older than 80 years,