Eligibility Criteria

Inclusion:

  1. Histologically or cytologically confirmed breast cancer that is either locally advanced or metastatic. Locally advanced breast cancer must not be amenable to surgical resection or radiation with curative intent.
  2. Suspected deleterious or deleterious BRCA1 and/or BRCA2 germline mutation.
  3. Breast cancer must be HER2-negative.
  4. Measurable or non-measurable (but radiologically evaluable) disease per Response Evaluation Criteria In Solid Tumors (RECIST), version 1.1 on computed tomography (CT) scan (within 28 days of randomization) with at least one lesion outside previously irradiated areas.
  5. ECOG Performance status of 0 to 2.
  6. Adequate hematologic, renal, and hepatic function (within 28 days of randomization).

Exclusion:

  1. More than two prior lines of cytotoxic chemotherapy (e.g., gemcitabine, doxorubicin, capecitabine) for metastatic disease.
    • Previous treatments with hormonal therapy (tamoxifen, aromatase inhibitors) and signal transduction agents (e.g., erlotinib, gefitinib, everolimus, bevacizumab) are allowed and are not counted towards the prior line of therapy.
  2. More than one prior line of platinum therapy for breast cancer. Subjects who have progressed on platinum therapy or recurred within 12 months of platinum therapy will be excluded.
  3. Prior therapy with PARP inhibitors.
  4. Prior taxane therapy administered for the treatment of metastatic breast cancer with the below exceptions.
    • Prior taxane therapy for metastatic breast cancer is allowed if the patient received ≤ 1 full cycle (i.e., therapy discontinued within 4 weeks for subjects receiving weekly paclitaxel or Abraxane; therapy discontinued within 3 weeks for subjects receiving paclitaxel or docetaxel every 3 weeks) in the absence of progression or if taxane therapy for metastatic disease was > 12 months prior to C1D-2.
    • Use of taxanes as adjuvant therapy or to treat locally advanced disease is permitted, if given more than 6 months prior to C1D-2
  5. Known history of allergic reaction to cremophor-paclitaxel, carboplatin, Azo-Colourant Tartrazine (also known as FD&C Yellow 5 or E102), Azo-Colourant Orange Yellow-S (also known as FD&C Yellow 6 or E110) or known contraindications to any study supplied drug.
  6. Active CNS metastases or leptomeningeal disease.