Nab-Paclitaxel and Atezolizumab Before Surgery in Treating Patients With Triple Negative Breast Cancer

  • End date
    Feb 28, 2022
  • participants needed
  • sponsor
    M.D. Anderson Cancer Center
Updated on 3 February 2021
platelet count
ejection fraction
monoclonal antibodies
breast cancer
growth factor
endocrine therapy
gilbert's syndrome
international normalized ratio
neutrophil count
hormone therapy
tumor cells
epidermal growth factor receptor
primary tumor
carcinoma in situ
biomarker analysis
human epidermal growth factor
triple negative breast cancer
progesterone receptor
epidermal growth factor
estrogen receptor
breast adenocarcinoma
ductal carcinoma in situ
ductal carcinoma


This phase II trial studies how well nab-paclitaxel and atezolizumab before surgery work in treating patients with triple negative breast cancer (breast cancer cells that do not have estrogen receptors, progesterone receptors, or large amounts of human epidermal growth factor receptor 2 protein). Drugs used in chemotherapy, such as nab-paclitaxel, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Immunotherapy with monoclonal antibodies, such as atezolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving nab-paclitaxel and atezolizumab before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed. This drug combination before surgery may be an effective treatment for triple negative breast cancer.



I. To evaluate the rate of pathologic complete response (pCR)/residual cancer burden (RCB)-0 + residual cancer burden (RCB)-I responses in patients with triple negative breast cancer (TNBC), who were non-responders to initial anthracycline and cyclophosphamide chemotherapy, treated with atezolizumab in combination with nab-paclitaxel in the neoadjuvant setting.


I. To estimate progression free survival (PFS) distribution of triple negative breast cancer (TNBC) patients who were non-responders to initial anthracycline and cyclophosphamide chemotherapy, treated with atezolizumab in combination with nab-paclitaxel in the neoadjuvant setting.

II. To determine the safety of atezolizumab in combination with nab-paclitaxel in the neoadjuvant setting.


I. To investigate the association between biomarkers in the peripheral blood and tumor tissue with efficacy for TNBC patients treated with atezolizumab in combination with nab-paclitaxel in the neoadjuvant setting.


NEOADJUVANT: Patients receive atezolizumab intravenously (IV) over 60 minutes on day 1 and nab-paclitaxel IV over 30 minutes on days 1, 8, and 15. Treatment repeats every 21 days for 4 cycles in the absence of disease progression or unacceptable toxicity.

SURGERY: Patients undergo definitive breast surgery within 6 weeks of the completion of treatment.

ADJUVANT: Within 4 weeks after surgery, patients receive atezolizumab IV over 30 minutes on day 1. Treatment repeats every 21 days for 4 cycles in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 6 months for up to 3 years.

Condition Breast Cancer, Estrogen Receptor Negative, Progesterone Receptor Negative, Invasive Breast Carcinoma, Invasive Breast Cancer, Adenocarcinoma of the Breast, Breast Adenocarcinoma, HER2/Neu Negative, Triple-Negative Breast Carcinoma, HER2/Neu Negative, Triple-Negative Breast Carcinoma, Triple Negative Breast Carcinoma, HER2/Neu Negative, HER2/Neu Negative, HER2/Neu Negative, HER2/Neu Negative, HER2/Neu Negative, HER2/Neu Negative
Treatment laboratory biomarker analysis, Nab-paclitaxel, Atezolizumab, MPDL3280A
Clinical Study IdentifierNCT02530489
SponsorM.D. Anderson Cancer Center
Last Modified on3 February 2021


Yes No Not Sure

Inclusion Criteria

Is your age greater than or equal to 18 yrs?
Gender: Male or Female
Do you have any of these conditions: Triple-Negative Breast Carcinoma or HER2/Neu Negative or Invasive Breast Carcinoma or Breast Cancer or Estrogen Receptor Negative or Triple Negative B...?
Do you have any of these conditions: Breast Cancer or Progesterone Receptor Negative or Triple-Negative Breast Carcinoma or Estrogen Receptor Negative or Breast Adenocarcinoma or HER2/Neu...?
Do you have any of these conditions: Progesterone Receptor Negative or Estrogen Receptor Negative or Invasive Breast Carcinoma or Adenocarcinoma of the Breast or Invasive Breast Cancer or...?
Signed written informed consent
Histologically confirmed primary invasive adenocarcinoma of the breast with the size of the primary tumor being at least 1.5 cm, or at least 1 biopsy confirmed involved lymph node > 1.5 cm, on imaging by either mammography, ultrasound or breast magnetic resonance imaging (MRI)
Estrogen receptor (ER) and progesterone receptor (PR) expression both < 10% by immunohistochemistry (IHC) and human epidermal growth factor receptor 2 (HER2) negative or non-amplified as determined by the current American Society of Clinical Oncology (ASCO)-College of American Pathologists (CAP) criteria which are as follows: HER2 testing by IHC as 0 or 1+; if HER2 is 2+, ISH (in situ hybridization) must be performed; HER2 is positive for gene amplification if: - IHC 3+ based on circumferential membrane staining that is complete, intense - ISH positive based on
Single-probe average HER2 copy number >= 6.0 signals/cell
Dual-probe HER2/chromosome enumeration probe (CEP)17 ratio >= 2.0; with an average HER2 copy number >= 4.0 signals/cell
Dual-probe HER2/CEP17 ratio >= 2.0; with an average HER2 copy number < 4.0 signals/cell
Dual-probe HER2/CEP17 ratio < 2.0; with an average HER2 copy number >= 6.0 signals/cell
No prior treatment for primary invasive adenocarcinoma of the breast such as irradiation, chemotherapy, hormonal therapy, immunotherapy, investigational therapy or surgery other than the anthracycline and cyclophosphamide chemotherapy with or without 5-fluorouracil; treatment for ductal carcinoma in situ is allowed, such as surgery, hormonal therapy and radiotherapy
Eastern Cooperative Oncology Group (ECOG) performance status of 0-1
Baseline multi gated acquisition scan (MUGA) or echocardiogram scans with left ventricular ejection fraction (LVEF) of > 50%
Absolute neutrophil count (ANC) >= 1500 cells/uL
White blood cell counts (WBC) > 2500/uL
Lymphocyte count >= 300/uL
Platelet count >= 100,000/uL
Hemoglobin >= 9.0 g/dL
Total bilirubin =< 1.5 x upper limit of normal (ULN) with the following exception: patients with known Gilbert disease who have serum bilirubin level =< 3 x ULN may be enrolled
Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =< 3.0 x ULN
Alkaline phosphatase =< 2.5 x ULN
Serum creatinine =< 1.5 x ULN or creatinine clearance >= 50 mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation
International normalized ratio (INR) and activated partial thromboplastin time (aPTT) =< 1.5 x ULN; this applies only to patients who do not receive therapeutic anticoagulation; patients receiving therapeutic anticoagulation (such as low-molecular-weight heparin or warfarin) should be on a stable dose
Women of childbearing potential must be using an adequate method of contraception to avoid pregnancy throughout the study and for up to 6 months after the last dose of investigational product in such a manner that the risk of pregnancy is minimized; men on study and for at least 6 months after the last dose of nab-paclitaxel also must be using contraception; women of childbearing potential (WOCBP) are women who have not been postmenopausal greater than 1 year or undergone a hysterectomy and/or bilateral oophorectomy
Negative serum or urine pregnancy test for women within 72 hours of receiving the first dose of the study medication for women of childbearing potential
Classified as having insufficient tumor shrinkage by imaging (< 80% shrinkage after 4 cycles of anthracycline-based chemotherapy based upon diagnostic imaging)

Exclusion Criteria

Women who are pregnant or breast-feeding
Known metastatic disease
Disease free of prior malignancy for < 5 years with the exception of curatively treated basal cell carcinoma of the skin, carcinoma in situ of the cervix, or transitional cell carcinoma
Has received prior therapy with an anti-programmed cell death 1 (PD-1), anti-programmed cell death ligand 1 (PD-L1), anti-programmed cell death ligand 2 (PD-L2), anti-cluster of differentiation (CD)137, or anti-cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4) antibody (including ipilimumab or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways)
Has had major surgery within 21 days before cycle 1, day 1
Uncontrolled inflammatory bowel disease (e.g., Crohn's disease, ulcerative colitis)
Myocardial infarction within 6 months before starting therapy, symptomatic congestive heart failure (New York Heart Association > class II), unstable angina, or unstable cardiac arrhythmia requiring medication
Serious intercurrent infections or non-malignant medical illness that are uncontrolled or the control of which may be jeopardized by this therapy
Psychiatric disorders or other conditions rendering the subject incapable of complying with the requirements of the protocols
History or risk of autoimmune disease, including but not limited to systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome, Wegener's granulomatosis, Sjogren syndrome, Bell's palsy, Guillain-Barre syndrome, multiple sclerosis, autoimmune thyroid disease, vasculitis, or glomerulonephritis; patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone may be eligible; patients with controlled type 1 diabetes mellitus on a stable insulin regimen may be eligible; patients with eczema, psoriasis, lichen simplex chronicus of vitiligo with dermatologic manifestations only (e.g., patients with psoriatic arthritis would be excluded) are permitted provided that they meet the following conditions: patients with psoriasis must have a baseline ophthalmologic exam to rule out ocular manifestations, rash must cover less than 10% of body surface area (BSA), disease is well controlled at baseline and only requiring low potency topical steroids (e.g., hydrocortisone 2.5%, hydrocortisone butyrate 0.1%, fluocinolone 0.01%, desonide 0.05%, alclometasone dipropionate 0.05%), no acute exacerbations of underlying condition within the last 12 months (not requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)
Known to be human immunodeficiency virus positive
Patients with prior allogeneic stem cell or solid organ transplantation
History of idiopathic pulmonary fibrosis (including pneumonitis), drug-induced pneumonitis, organizing pneumonia (i.e., bronchiolitis obliterans, cryptogenic organizing pneumonia), or evidence of active pneumonitis on screening chest computed tomography (CT) scan; history of radiation pneumonitis in the radiation field (fibrosis) is permitted
Patients with active hepatitis B (defined as having a positive hepatitis B surface antigen [HBsAg] test at screening) or hepatitis C; patients with past hepatitis B virus (HBV) infection or resolved HBV infection (defined as having a negative HBsAg test and a positive antibody to hepatitis B core antigen [anti HBc] antibody test) are eligible; patients positive for hepatitis C virus (HCV) antibody are eligible only if polymerase chain reaction is negative for HCV ribonucleic acid (RNA)
Active tuberculosis
Administration of a live, attenuated vaccine within 4 weeks before cycle 1, day 1 or anticipation that such a live, attenuated vaccine will be required during the study; influenza vaccination should be given during influenza season only (approximately October to March); patients must not receive live, attenuated influenza vaccine (e.g., FluMist) within 4 weeks prior to cycle 1, day 1 or at any time during the study
Treatment with systemic immunostimulatory agents (including but not limited to interferons or interleukin [IL]-2) within 4 weeks or five half-lives of the drug, whichever is shorter
Treatment with systemic corticosteroids or other systemic immunosuppressive medications (including but not limited to prednisone, dexamethasone, cyclophosphamide, azathioprine, methotrexate, thalidomide, and anti-tumor necrosis factor [TNF] agents), or anticipated requirement for systemic immunosuppressive medications during the trial; patients who have received acute, low dose, systemic immunosuppressant medications (e.g., dexamethasone prior to the anthracycline-based chemotherapy for nausea) may be enrolled in the study; the use of inhaled corticosteroids and mineralocorticoids (e.g., fludrocortisone) is allowed
Concurrent disease or condition that would interfere with study participation or safety, such as any of the following
Active, clinically significant infection either grade > 2 by National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version (v)4.03 or requiring the use of parenteral anti-microbial agents within 14 days before day 1 of study drug
Clinically significant bleeding diathesis or coagulopathy, including known platelet function disorders
Non-healing wound, ulcer, or bone fracture
Known hypersensitivity to any of the components of atezolizumab or nab-paclitaxel
History of severe allergic, anaphylactic, or other hypersensitivity reactions to chimeric or humanized antibodies or fusion proteins
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