SAPHIRE II
A 4 Cohort, Randomized, Phase II Multi-Center Trial Evaluating Shorter Schedules of Adjuvant Regional Nodal Irradiation among Women and Men with Node-Positive and High-Risk Node-Negative Invasive Breast Cancer
To learn about the effects of shorter RNI regimens in patients with breast cancer who have had a lumpectomy or mastectomy and who are at higher risk for lower risk for the disease returning.