• Age ≥ 18 years of age at time of consent

• Histologically confirmed invasive breast carcinoma documented by core needle biopsy or incisional biopsy (excisional biopsy is not allowed). AJCC 8th edition clinical stage T1b-T3/N0-N3/M0 by physical exam or radiologic studies

• Must be candidates for curative surgical resection

• Have an FFPE diagnostic core biopsy specimen available that is determined by the study pathologist to be adequate for planned analyses

• Definitive surgical excision of the primary breast tumor (either partial mastectomy or total mastectomy) and ipsilateral axillary lymph node sampling (sentinel lymph node biopsy or axillary dissection) is planned following completion of preoperative chemotherapy.

• Estrogen Receptor (ER)- and Progesterone Receptor (PR)-negative as determined by immunohistochemistry (IHC), and Human Epidermal Growth Factor Receptor (HER)2-negative (triple-negative) cancer of the breast

• Triple-negative tumors are defined as:

⁃ Less than or equal to 10% of tumor cells staining for ER and for PR by immunohistochemistry (IHC)

⁃ HER2-negative, as defined by ASCO/CAP guidelines55

• Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1 or 2 within 30 days prior to study registration

• Demonstrate adequate organ function as defined in the table below; all screening labs to be obtained within 30 days prior to registration Hematological Leukocytes ≥2,500/mm3 Platelet count ≥ 100,000/mm3 Absolute Neutrophil Count (ANC) ≥ 1,500/mm3 Hemoglobin (Hgb) ≥ 9.0 g/dL Renal Creatinine/Calculated creatinine clearance (CrCl) Cr \< 1.5 x upper limit of normal (ULN) or CrCl ≥ 50 mL/min using the Cockcroft-Gault formula Hepatic Bilirubin Bilirubin ≤ 1.5 × ULN. Subjects with Gilbert's syndrome may have a bilirubin \> 1.5 × ULN, if no evidence of biliary obstruction exists Aspartate aminotransferase (AST) ≤ 2.5 × ULN Alanine aminotransferase (ALT) ≤ 2.5 × ULN

• No evidence of distant metastases (M0 as per AJCC staging guidelines)

⁃ Provided written informed consent and HIPAA authorization for release of personal health information, approved by an Institutional Review Board (IRB)

⁃ NOTE: HIPAA authorization may be included in the informed consent or obtained separately

⁃ Women of childbearing potential (WOCP) must not be pregnant or breast-feeding. A negative serum or urine pregnancy test is required within 14 days of study registration. If the urine test cannot be confirmed as negative, a serum pregnancy test will be required

⁃ Women of childbearing potential (WOCP) must be willing to use two effective methods of birth control such as an oral, implantable, injectable, or transdermal hormonal contraceptive, an intrauterine device (IUD), use of a double barrier method (condoms, sponge, diaphragm, or vaginal ring with spermicidal jellies or cream), or total abstinence for the course of the study until 120 days after the last dose of study drug NOTE: Women are considered to be of childbearing potential unless they are postmenopausal (≥45 years of age and has not had menses for greater than 12 consecutive months or bilateral oophorectomy) or surgically sterile (bilateral tubal ligation or hysterectomy) or not heterosexually active for the duration of the study and at least 120 days after the last dose of study drug

⁃ As determined by the enrolling physician or protocol designee, ability of the subject to understand and comply with study procedures for the entire length of the study