A Study of Ipatasertib in Combination With Paclitaxel as a Treatment for Participants With PIK3CA / AKT1 / PTEN-Altered, Locally Advanced or Metastatic, Triple-Negative Breast Cancer or Hormone Receptor-Positive, HER2-Negative Breast Cancer

Status: Active


This study will evaluate the efficacy of ipatasertib + paclitaxel versus placebo + paclitaxel in participants with histologically confirmed, locally advanced or metastatic triple-negative breast cancer (TNBC) and in participants with locally advanced or metastatic hormone receptor positive (HR+) / human epidermal growth factor receptor 2 negative (HER2−) breast adenocarcinoma who are not suitable for endocrine therapy.

Eligibility Criteria

Inclusion Criteria

  • Women or men aged =>18 years with histologically documented triple-negative breast cancer (TNBC) or HR+/HER2- adenocarcinoma of the breast that is locally advanced or metastatic and is not amenable to resection with curative intent
  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1
  • Adequate hematologic and organ function within 14 days prior to treatment initiation
  • Histologically documented TNBC or HR+/HER2- adenocarcinoma of the breast that is locally advanced or metastatic and is not amenable to resection with curative intent
  • Measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST) v1.1
  • Eligible for taxane monotherapy, as per local investigator assessment (e.g., absence of rapid clinical progression, life-threatening visceral metastases, or the need for rapid symptom and/or disease control which may require combination chemotherapy)
  • HR+/HER2- breast cancer that is not considered appropriate for endocrine-based therapy and meets one of the following: patient has recurrent disease <=5 years of being on adjuvant endocrine therapy or if patient with de novo metastatic disease have progressed within 6 months of being on first line endocrine therapy.
  • Consent to submit a formalin-fixed, paraffin-embedded tumor (FFPE) tissue block or freshly cut unstained, serial tumor slides from the most recently collected tumor tissue for central molecular analysis
  • Confirmation of biomarker eligibility using an appropriately validated molecular assay at a diagnostic laboratory, Clinically Laboratory Improvement Amendments (CLIA) or equivalently accredited i.e., valid results from either central testing or local testing of tumor tissue or blood demonstrating PIK3CA/AKT1/PTEN-altered status

Exclusion Criteria

  • Treatment with approved or investigational cancer therapy within 14 days prior to treatment initiation
  • Any previous chemotherapy for inoperable locally advanced or metastatic TNBC or HR+/HER2- adenocarcinoma of the breast (patients receiving neo/adjuvant chemotherapy eligible provided they have at least a 12 month disease-free interval)
  • History of or known presence of brain or spinal cord metastases
  • Malignancies other than breast cancer within 5 years prior to treatment initiation (except for appropriately treated carcinoma in situ of the cervix, non-melanoma skin carcinoma, or Stage I uterine cancer)
  • Prior treatment with an Akt inhibitor (prior PI3K or mTOR inhibitors are allowed)
  • History of malabsorption syndrome or other condition that would interfere with enteral absorption or results in the inability or unwillingness to swallow pills
  • Active infection requiring systemic anti-microbial treatment (including antibiotics, anti-fungals, and anti-viral agents)
  • Known human immunodeficiency virus (HIV) infection
  • Known clinically significant history of liver disease consistent with Child-Pugh Class B or C, including active viral or other hepatitis, current drug or alcohol abuse, or cirrhosis
  • Major surgical procedure, open biopsy, or significant traumatic injury within 28 days prior to initiation of treatment (or anticipated need during study)
  • Pregnant or breastfeeding, or intending to become pregnant during the study
  • Clinically significant cardiac dysfunction (including NYHA Class II/III/IV heart failure, left ventricular ejection fraction [LVEF] <50%, active ventricular arrhythmia requiring medication, history of myocardial infarction within 6 months of treatment initiation, clinically significant electrocardiogram [ECG] abnormalities).
  • Need for chronic corticosteroid therapy of >=10 mg of prednisone per day or an equivalent dose of other anti-inflammatory corticosteroids or immunosuppressants for a chronic disease
  • Unresolved, clinically significant toxicity from prior therapy, except for alopecia and Grade 1 peripheral neuropathy
  • Uncontrolled clinical symptoms including pleural effusion, pericardial effusion, or ascites, tumor-related pain, hypercalcemia (or symptomatic hypercalcemia requiring continued use of bisphosphonate therapy)
  • History of Type I or Type II diabetes mellitus requiring insulin
  • Grade >=2 uncontrolled or untreated hypercholesterolemia or hypertriglyceridemia
  • History of or active inflammatory bowel disease or active bowel inflammation
  • Clinically significant lung disease (including pneumonitis, interstitial lung disease, idiopathic pulmonary fibrosis, cystic fibrosis, active infection/ history of opportunistic infections)
  • Treatment with strong CYP3A inhibitors or strong CYP3A inducers within 2 weeks or 5 drug-elimination half-lives, whichever is longer, prior to initiation of treatment
  • Grade >=2 peripheral neuropathy

Locations & Contacts


Los Angeles
USC / Norris Comprehensive Cancer Center
Status: Active
Contact: Grace M Facio
Phone: 323-409-7027ext3511
Email: gfacio@med.usc.edu
University of California Davis Comprehensive Cancer Center
Status: Active
Name Not Available
San Diego
University of California San Diego
Status: Active
Name Not Available
San Francisco
UCSF Medical Center-Mount Zion
Status: Active
Contact: UCSF Clinical Trials
Phone: 877-827-3222
Email: cancertrials@ucsf.edu


Johns Hopkins University / Sidney Kimmel Cancer Center
Status: Active
Name Not Available
University of Maryland / Greenebaum Cancer Center
Status: Active
Contact: Nancy S. Tait
Phone: 410-328-3546
Email: ntait@umm.edu


Massachusetts General Hospital Cancer Center
Status: Active
Name Not Available
Mass General / North Shore Cancer Center
Status: Active
Name Not Available

New York

New York
Memorial Sloan Kettering Cancer Center
Status: Active
Name Not Available


OHSU Knight Cancer Institute
Status: Active
Name Not Available


UT Southwestern / Simmons Cancer Center-Dallas
Status: Active
Contact: Marcella West Aguilar
Phone: 214-648-1479
Email: marcella.aguilar@utsouthwestern.edu

Trial Phase & Type

Trial Phase

Phase II/III

Trial Type


Lead Organization

Lead Organization
Hoffmann-La Roche

Trial IDs

Primary ID CO40016
Secondary IDs NCI-2018-00531, 2017-001548-36
Clinicaltrials.gov ID NCT03337724