Safety and Efficacy Study of Enzalutamide in Patients With Advanced, Androgen Receptor-Positive, Triple Negative Breast Cancer

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Status and phase

Phase 2


Advanced, Androgen Receptor Positive Triple Negative Breast Cancer


Drug: Enzalutamide

Study type


Funder types



2013-000698-57 (EudraCT Number)
C3431007 (Other Identifier)

Details and patient eligibility


The purpose of this study is to determine if enzalutamide is safe and effective in the treatment of patients with advanced breast cancer that express the androgen receptor but do not express the estrogen or progesterone receptor and are not Her2 amplified.


118 patients




18+ years old


No Healthy Volunteers

Inclusion criteria

  • Women at least 18 years of age;
  • Advanced AR+ TNBC;

Availability of a representative tumor specimen:

  • Either measurable disease or bone only nonmeasurable disease;
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.

Exclusion criteria

  • Any severe concurrent disease, infection, or comorbid condition;
  • Any condition or reason that interferes with the patient's ability to participate in the trial, that may cause undue risk, or complicates the interpretation of safety data;
  • Current or previously treated brain metastasis or active leptomeningeal disease;
  • Current hormone replacement therapy;
  • Local palliative radiation therapy within 7 days before day 1;
  • History of another invasive cancer within 5 years of day 1;
  • Absolute neutrophil count < 1500/µL, platelet count < 75,000/µL, or hemoglobin < 9 g/dL (5.6 mmol/L) at the screening visit;
  • Creatinine > 1.5 times upper limit of normal (ULN) at the screening visit;
  • History of seizure or any condition that may predispose to seizure;
  • Clinically significant cardiovascular disease;
  • Active gastrointestinal disorder affecting absorption;
  • Major surgery within 4 weeks before day 1;
  • Treatment with any commercially available anticancer agent within 14 days before day 1;
  • Treatment with any investigational agent within 2 weeks before day 1;
  • Treatment with any of the following medications within 2 weeks before day 1: Estrogens, including hormone replacement therapy; Androgens (testosterone, dihydroepiandrosterone, etc);Systemic radionuclides (eg, samarium or strontium);Vaccine therapy;
  • Hypoglycemic episode requiring medical intervention while on insulin treatment within 12 months before day 1;
  • Hypersensitivity reaction to the active pharmaceutical ingredient or any of the capsule components, including Labrasol, butylated hydroxyanisole, and butylated hydroxytoluene.

Trial design

118 participants in 1 patient group

Experimental group
160 mg administered as four 40 mg soft gelatin capsules orally once daily
Drug: Enzalutamide

Trial contacts and locations



Data sourced from

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