Wednesday, May 29, 2019 MAC26 (S1706) trial has been centrally activated, this is a Phase II Randomized Trial of Olaparib (NSC-747856) Administered Concurrently with Radiotherapy Versus Radiotherapy Alone for Inflammatory Breast Cancer Activation Date: May 28, 2019 | NCT Registration ID : NCT03598257 Eligibility: Patients must be =>18 with a Zubrod Performance Status =< 2. Patients must have adequate: hematologic, renal and hepatic function. Patients must not have: a history of other prior malignancy or uncontrolled infection; a history of resting ECG indicating uncontrolled potential reversible cardia conditions symptomatic congestive heart failure, unstable angina pectoris or cardiac arrhythmia; MDS/AML; major surgery within 2 weeks of starting study treatment; history of uncontrolled ventricular arrhythmia; previous allogenic bone marrow transplant; whole blood transfusions. Patients must be able to swallow and retain oral medication. Objectives: Primary objective is to compare the Invasive Disease-Free Survival (IDFS) of patients with inflammatory breast cancer receiving concurrent administration of olaparib with standard doses of radiotherapy to the chest wall and regional lymph nodes compared to standard doses of radiotherapy alone to the chest wall and regional lymph nodes. Secondary objective is to compare the effect of concurrent administration of olaparib with radiotherapy versus radiotherapy alone on improvement in locoregional control (measured by Locoregional Recurrence-Free Interval), Distant Relapse-Free Survival, and Overall Survival in inflammatory breast cancer patients. Visit the CCTG MAC26 trial page for more information.