Veliparib With Radiation Therapy in Patients With Inflammatory or Loco-regionally Recurrent Breast Cancer

Veliparib is an investigational drug known as a "PARP inhibitor." Because veliparib affects the way that cells repair damage, veliparib may be useful in combination with radiation treatment because it may help make radiation work better. Veliparib is an oral medication that will be taken twice daily during the 6 weeks a patient is receiving radiation therapy. The researchers will also be analyzing blood and tissue taken from the skin of patients. The skin biopsies will help determine which patients are more sensitive to treatment with radiation combined with the study drug. While the blood sample will allow researchers to see if the way a person's body processes drugs affects how the patient responds to treatment.