NRG-BR007: A Phase III Clinical Trial Evaluating Deescalation of Breast Radiation for Conservative Treatment of Stage I, Hormone sensitive, HER2- Negative Oncotype recurrence Score Less Than or Equal to 18 Breast Cancer (DEBRA)
Objective
Primary Objective To evaluate whether breast conservation surgery and endocrine therapy results in a non-inferior rate of invasive or non-invasive ipsilateral breast tumor recurrence (IBTR) compared to breast conservation with breast radiation and endocrine therapy.