Inclusion Criteria:

          -  Patients must have Stage II or III (according to AJCC cancer staging manual anatomic
             staging table, 8th edition) histologically confirmed invasive carcinoma of the breast.
             A minimum tumor size of 1.5 cm determined by physical exam or imaging (whichever is
             larger) is required. Patients with inflammatory breast carcinoma (T4d) are NOT
             eligible.

          -  Tumors must be HER-2 positive, as assessed by standard local institutional protocol
             (central testing is not required):

               -  IHC 3+

               -  FISH positive based on one of the three following criteria:

        Single-probe average HER2 copy number ≥ 6.0 signals/cell; OR

          -  Dual-probe HER2/CEP17 ratio <2.0 with an average HER2 copy number ≥ 6.0 signals/cell;
             OR

          -  Dual-probe HER2/CEP17 ratio ≥2.0

               -  ER/PR determination is required. ER- and PR-assays should be performed by
                  immunohistochemical methods according to the local institution standard protocol.

               -  Bilateral breast cancers are allowed as long as both cancers are HER2-positive
                  (as defined in 3.1.2), or the contralateral cancer is a <1 cm, ER+, and HER2-
                  tumor.

               -  Patients with multifocal or multicentric disease are eligible as long as all
                  tumor foci that were tested for HER2 status at the local institution are
                  HER2-positive, and at least one tumor focus meets eligibility criteria.

               -  Breast imaging should include dedicated ultrasound of the ipsilateral axilla. For
                  subjects with a clinically positive axilla based on exam or imaging, a fine
                  needle aspiration or core biopsy procedure will be performed to determine the
                  presence of metastatic disease in the lymph nodes (though lymph node sampling
                  procedure need not be resulted prior to patient's registration on trial, as long
                  as all other eligibility are met).

               -  Men and women (with any menopausal status) ≥ 18 years of age are eligible.

               -  ECOG PS 0 or 1.

          -  Required laboratory values:

          -  ANC ≥ 1000/mm3

          -  Hemoglobin ≥ 9 g/dl

          -  Platelets ≥ 100,000/mm3

          -  Serum creatinine < 1.5 x ULN (institutional) OR calculated GFR ≥60mL/min.

             -Total bilirubin ≤ 1.5 x ULN (institutional). For patients with Gilbert Syndrome, the
             direct bilirubin should be within the institutional normal range OR total bilirubin ≤
             2.0 mg/dL.

          -  AST and ALT ≤ 2.5x ULN (institutional)

               -  Left ventricular ejection fraction (LVEF) ≥ 50%.

               -  Premenopausal women must have a negative serum pregnancy test within 14 days of
                  registration, including women who have had a tubal ligation and for women less
                  than 12 months after the onset of menopause.

               -  Women of childbearing potential and men with partners of childbearing potential
                  must be willing to use one highly effective form of non-hormonal contraception or
                  two effective forms of non-hormonal contraception by the patient and/or partner
                  and continue its use for the duration of the study treatment and for 7 months
                  after the last dose of study treatment.

               -  Patients with a history of ipsilateral DCIS are eligible.

               -  Patients undergoing breast conservation therapy (i.e. lumpectomy) must not have
                  any contraindications to radiation therapy.

               -  Willing and able to sign informed consent.

               -  Willing to provide tissue for research purposes

        Exclusion Criteria:

          -  Pregnant or nursing women due to the teratogenic potential of the study drugs.

          -  Active, unresolved infection.

          -  Receipt of intravenous antibiotics for infection within 7 days prior to registration.

          -  Uncontrolled hypertension (systolic >180 mm Hg and/or diastolic >100 mm Hg) or
             clinically significant (i.e. active) cardiovascular disease: cerebrovascular
             accident/stroke or myocardial infarction within 6 months prior to first study
             medication, unstable angina, congestive heart failure (CHF) of New York Heart
             Association (NYHA) Class II or higher (see Appendix B), or serious cardiac arrhythmia
             requiring medication.

          -  Significant symptoms (Grade ≥ 2) from peripheral neuropathy.

          -  Other concurrent serious diseases that may interfere with planned treatment, including
             severe pulmonary conditions/illness, uncontrolled infections, uncontrolled diabetes.

          -  Any prior treatment for the current breast cancer, including chemotherapy, hormonal
             therapy, radiation, or experimental therapy