Shortening Adjuvant Photon and Proton Irradiation (SAPPHIRe-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 InvShortening Adjuvant Photon and Proton Irradiation (SAPPHIRe-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 InvTo 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.NCT07076485Shraddha Dalwadi, MD, MBA