PREDATOR: Neoadjuvant Gene Prediction for Breast Cancer

The purpose of this phase II study is to find out if the test, Mammostrat® can be used as a
predictor or outcome tool to determine who will best benefit from chemotherapy prior to
surgery. This can be used to determine if Mammostrat assay may be used as a clinical marker
to identify a subset of women with breast cancer who do not benefit from preoperative
chemotherapy, either taxane/taxane-like (T) chemo agents or anthracycline-based chemotherapy
and cyclophosphamide (AC).

Inclusion Criteria:

1. Patients with histologic confirmation of invasive breast carcinoma.

2. Patients must have intact primary tumor.

3. ≥18 years of age.

4. Patients with bilateral breast cancer are eligible.

5. Patients with second primary breast cancers are eligible.

6. The primary breast tumor must be ≥ 2 cm by physical exam or imaging.

7. The tumor must have been determined to be HER2-negative as follows:

- Fluorescent in situ hybridization (FISH)-negative (defined by ratio of HER2 to
CEP17 must be < 2.2)

- Immunohistochemistry (IHC) 0-1+; or

- IHC 2+ and FISH-negative

8. ECOG PS of 0, 1, or 2.

9. Negative serum pregnancy test ≤7 days of treatment initiation and a serum or urine
pregnancy test must be repeated ≤ 3 days prior to starting treatment for women of
childbearing potential (WOCBP). For WOCBP, adequate contraception must be used
throughout the study. For this study, acceptable methods of contraception include a
reliable intrauterine device or a spermicide in combination with a barrier method.
Women who are already on hormonal forms of birth control may continue that treatment
but must also use a barrier method.

10. Ability to understand the requirements of the study, provide written informed consent
and authorization of use and disclosure of protected health information, and agree to
abide by the study restrictions and return for the required assessments.

11. Patient must be willing to undergo breast biopsies as required by the study protocol.

12. Sufficient tissue must be available from the diagnostic core biopsies. If not,
patients must undergo additional biopsies to perform Mammostrat.

Exclusion Criteria:

1. Patients with a history of other invasive malignancies diagnosed and treated within
the previous 5 years, except non-melanoma skin cancer and non-invasive cervical
cancer.

2. Prior treatment with any investigational drug within the preceding 4 weeks.

3. Evidence of New York Heart Association class III or greater cardiac disease.

4. History of myocardial infarction, stroke, ventricular arrhythmia, or symptomatic
conduction abnormality within 6 months.

5. Concurrent severe or uncontrolled medical disease (i.e., active systemic infection,
diabetes, hypertension, coronary artery disease, congestive heart Failure or major
surgery) that, in the opinion of the Investigator, would compromise the safety of the
patient or compromise the ability of the patient to complete the study.

6. Pregnant or nursing women.

7. Known allergic reaction to Cremophor or any of the chemo agents on this trial.