A Study of Rucaparib Administered With Radiation in Patients With Triple Negative Breast Cancer With an Incomplete Response Following Chemotherapy

one dose level (300 mg BID, 400 mg BID, 500 mg BID or 600 mg BID) concurrently with a 6-week course of radiotherapy and 4 additional weeks of maintenance rucaparib at the same dose level.

50 Gy in 2 Gy per fraction to the breast or chest wall with or without regional nodes plus a 10 Gy boost to the lumpectomy cavity, to a total dose of 60 Gy. A 10 Gy boost to the post-mastectomy scar is allowed at the discretion of the treating physician.