Inclusion Criteria:

* Histologically confirmed invasive cancer of the breast
* Clinically or radiologically measureable disease in the breast after diagnostic biopsy, defined as longest diameter greater than or equal to 25 mm (2.5cm)
* No prior cytotoxic regimens are allowed for this malignancy. Patients may not have had prior chemotherapy or prior radiation therapy to the ipsilateral breast for this malignancy. Prior bis-phosphonate therapy is allowed
* Age ≥18 years
* ECOG performance status 0-1
* Willing to undergo core biopsy of the primary breast lesion to assess baseline biomarkers
* Non-pregnant and non-lactating
* No ferromagnetic prostheses. Patients who have metallic surgical implants that are not compatible with an MRI machine are not eligible.
* Ability to understand and willingness to sign a written informed consent (I-SPY TRIAL Screening Consent)
* Eligible tumors must meet one of the following criteria: Stage II or III, or T4, any N, M0, including clinical or pathologic inflammatory cancer or Regional Stage IV, where supraclavicular lymph nodes are the only sites metastasis
* Any tumor ER/PgR status, any HER-2/neu status as measured by local hospital pathology laboratory and meets any tumor assay profile described in protocol section 4.1.2F
* Normal organ and marrow function: Leukocytes ≥ 3000/μL, Absolute neutrophil count ≥ 1500/μL, Platelets ≥ 100,000/μL, Total bilirubin within normal institutional limits, unless patient has Gilbert's disease, for which bilirubin must be ≤ 2.0 x ULN, AST(SGOT)/ALT (SGPT) ≤ 1.5 x institutional ULN, creatinine \< 1.5 x institutional ULN
* No uncontrolled or severe cardiac disease. Baseline ejection fraction (by nuclear imaging or echocardiography) must by ≥ 50%
* No clinical or imaging evidence of distant metastases by PA and Lateral CXR, Radionuclide Bone scan, and LFTs including total bilirubin, ALT, AST, and alkaline phosphatase
* Tumor assay profile must include on of the following: MammaPrint High, any ER status, any HER2 status, or MammaPrint Low, ER negative (\<5%), any HER2 status, or MammaPrint Low, ER positive, HER2/neu positive by any one of the three methods used (IHC, FISH, TargetPrint™)
* Ability to understand and willingness to sign a written informed consent document (I-SPY 2 TRIAL Consent #2)

Exclusion Criteria:

* Use of any other investigational agents within 30 days of starting study treatment
* History of allergic reactions attributed to compounds of similar chemical or biologic composition to the study agent or accompanying supportive medications.
* Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements