Houston, Texas 77030


This phase IIB trial studies how well enzalutamide and paclitaxel before surgery works in treating patients with stage I-III androgen receptor-positive triple-negative breast cancer. Androgens can cause the growth of triple-negative breast cancer. Anti-hormone therapy, such as enzalutamide, prevent androgen from binding to the androgen receptor, thereby decreasing cell growth and causing tumor cell death. Drugs used in chemotherapy, such as 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. Giving enzalutamide and paclitaxel before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed. This treatment study is part of the MD Anderson Moonshot initiative.

Study summary:

PRIMARY OBJECTIVES: I. To evaluate the pathologic complete response (pCR) and residual cancer burden-index (RCB-I) rates of patients with triple-negative breast cancer (TNBC) who were non-responders to initial anthracycline and cyclophosphamide chemotherapy and who were treated with enzalutamide in combination with weekly paclitaxel in the neoadjuvant setting. SECONDARY OBJECTIVES: I. To estimate progression free survival (PFS) distribution of androgen receptor (AR)-positive TNBC patients who were nonresponders to initial anthracycline and cyclophosphamide chemotherapy, treated with enzalutamide in combination with weekly paclitaxel in the neoadjuvant setting. II. To determine the safety of administering enzalutamide in combination with weekly paclitaxel. EXPLORATORY OBJECTIVES: I. To investigate the association between biomarkers in the peripheral blood and tumor tissue with safety and efficacy for TNBC patients who were treated with enzalutamide and treatment in combination with weekly paclitaxel in the neoadjuvant setting. II. To investigate the correlation between circulating tumor cells (CTC) characteristics and/or gene profiles and treatment response of enzalutamide and taxane. OUTLINE: Patients receive enzalutamide orally (PO) daily on days 1-7 and paclitaxel intravenously (IV) over 2 hours on day 1. Cycles repeat every 7 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. SURGERY: After 12 cycles of therapy, patients undergo surgical resection of primary tumor with or without lymph node biopsy or complete axillary dissection. After completion of study treatment, patients are followed up within 30 days after surgery.


Inclusion Criteria: - Patients must be willing to sign the protocol-specific written informed consent - Patients with histologically confirmed intact primary cancer that is confirmed invasive carcinoma of the breast, with at least 1.0 cm residual disease as measured by mammography, ultrasound, or breast magnetic resonance imaging (MRI) after neoadjuvant anthracycline based chemotherapy - Patients must have triple-negative breast cancer defined as estrogen receptor (ER) < 10%; progesterone receptor (PR) < 10% by immunohistochemistry (IHC) and human epidermal growth factor receptor 2 (HER2) 0-1+ by IHC or 2+, fluorescence in situ hybridization (FISH) non-amplified - Androgen receptor will be quantified using a Clinical Laboratory Improvement Act (CLIA)-compliant assay for AR on a biopsy specimen obtained prior to the start of treatment; AR-positivity is defined as >= 10% of nuclear staining - Patient's disease state must be American Joint Committee on Cancer (AJCC) 7th edition stage I-III - Patients must have a performance status of 0 - 1 on the Eastern Cooperative Oncology Group (ECOG) performance scale - A negative serum or urine pregnancy test must be done within 72 hours before the first dose of the study medication for women of childbearing potential as per institutional guidelines; post-menopausal women (defines as no menses for at least 1 year) and surgically sterilized women are not required to undergo pregnancy test - Men on study must use a condom if having sex with a pregnant woman - Male patients and his female partner who is of childbearing potential must use 2 acceptable methods of birth control (one of which must include a condom as a barrier method of contraception) starting at screening and continuing throughout the study period and for 3 months after final study drug administration - Absolute neutrophil count >= to 1,500 /uL - Platelets >= to 100,000 /uL - Hemoglobin >= to 9 g/dL - Creatinine clearance >= to 50 ml/min - Total bilirubin =< to 1.5 X upper limit of normal (ULN) - Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) =< to 2.5 X ULN Exclusion Criteria: - Patients who have received any other previous antitumor therapies (other than anthracycline-based neoadjuvant chemotherapy for the current cancer event) - Breast-feeding at screening or planning to become pregnant during the course of therapy - Patients who have had major surgery within 21 days before cycle 1, day 1 - Patients with known history of hypersensitivity to paclitaxel that did not resolve with pre-medication - Patients with left ventricular ejection fraction < 50% or 10% decrease from baseline on echocardiogram after anthracycline based chemotherapy - Patients with gastrointestinal impairment that would affect the absorption of enzalutamide or previous history of colitis - Subjects requiring daily corticosteroids, other than those given as premedication for the anthracycline-based chemotherapy - Patients with known or suspected brain metastasis or active leptomeningeal disease - History of seizure or any condition that may predispose to seizure (e.g., prior cortical stroke, significant brain trauma) at any time in the past; also, history of loss of consciousness or transient ischemic attack within 12 months of day 1 visit - 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



Primary Contact:

Principal Investigator
Naoto T Ueno
M.D. Anderson Cancer Center

Naoto Ueno, MD, PHD
Phone: 713-792-2817
Email: nueno@mdanderson.org

Backup Contact:


Location Contact:

Houston, Texas 77030
United States

Naoto T. Ueno
Phone: 713-792-2817

Site Status: Recruiting

Data Source: ClinicalTrials.gov

Date Processed: January 21, 2020

Modifications to this listing: Only selected fields are shown, please use the link below to view all information about this clinical trial.

Click to view Full Listing

If you would like to be contacted by the clinical trial representative please fill out the form below.