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A Study of Paclitaxel With GDC-0941 Versus Paclitaxel With Placebo in Patients With Locally Recurrent or Metastatic Breast Cancer

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
Genentech, Inc. Identifier:
First received: November 30, 2012
Last updated: May 28, 2015
Last verified: May 2015
This multicenter, randomized, single-blind, placebo-controlled, two arm study will evaluate the efficacy and safety of paclitaxel with GDC-0941 versus paclitaxel with placebo in patients with locally recurrent or metastatic breast cancer.

Condition Intervention Phase
Breast Cancer
Drug: GDC-0941
Drug: Placebo
Drug: paclitaxel
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single Blind (Subject)
Primary Purpose: Treatment
Official Title: A Phase II, Randomized Study of Paclitaxel With GDC-0941 Versus Paclitaxel With Placebo in Patients With Locally Recurrent or Metastatic Breast Cancer

Resource links provided by NLM:

Further study details as provided by Genentech, Inc.:

Primary Outcome Measures:
  • Progression-free survival (PFS), defined as time from randomization to disease progression (tumor assessments according to RECIST v.1.1 criteria) or death from any cause [ Time Frame: approximately 3.5 years ]

Secondary Outcome Measures:
  • Safety: Incidence of adverse events [ Time Frame: approximately 3.5 years ]
  • Objective tumor response rate [ Time Frame: approximately 3.5 years ]
  • Clinical benefit rate, defined as partial response, complete response or stable disease lasting at least 6 months [ Time Frame: approximately 3.5 years ]
  • Duration of confirmed objective response [ Time Frame: approximately 3.5 years ]

Enrollment: 197
Study Start Date: February 2013
Estimated Study Completion Date: January 2016
Estimated Primary Completion Date: June 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: A: Paclitaxel + GDC-0941 Drug: GDC-0941
orally daily for 5 consecutive days each week, followed by 2 days during which GDC-0941 is not administered (5/7-day schedule)
Drug: paclitaxel
90 mg/m2 IV weekly for 3 out of 4 weeks in every 28-day cycle
Active Comparator: B: Paclitaxel + Placebo Drug: Placebo
matching GDC-0941 placebo orally, 5/7-day schedule
Drug: paclitaxel
90 mg/m2 IV weekly for 3 out of 4 weeks in every 28-day cycle


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Female adult patients
  • Histologically or cytologically confirmed adenocarcinoma of the breast, with measurable or non-measurable locally recurrent or metastatic disease
  • Human epidermal growth factor receptor 2 (HER2)-negative and HR (estrogen receptor and/or progesterone receptor)-positive disease as defined by local guidelines
  • Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1
  • Adequate hematologic and end organ function
  • Women of childbearing potential must agree to remain abstinent or to use two adequate methods of contraception, including at least one method with a failure rate of < 1% per year, during the treatment period and for at least 30 days after the last dose of study treatment or 6 months after discontinuation of paclitaxel, whichever is longer

Exclusion Criteria:

  • Prior non-capecitabine chemotherapy for locally recurrent or metastatic disease
  • Prior treatment with a PI3K inhibitor for advanced or metastatic breast cancer
  • History of intolerance to a taxane-containing therapy
  • History of clinically significant cardiac or pulmonary dysfunction
  • History of malabsorption syndrome or other condition that would interfere with enteral absorption
  • Clinically significant history of liver disease
  • Active autoimmune disease or active inflammatory disease
  • Immunocompromised status
  • Need for current chronic corticosteroid therapy
  • Pregnancy, lactation, or breastfeeding
  • Current severe, uncontrolled systemic disease
  • Known untreated or active central nervous system (CNS) metastases
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01740336

  Show 97 Study Locations
Sponsors and Collaborators
Genentech, Inc.
Study Director: Clinical Trials Genentech, Inc.
  More Information

Responsible Party: Genentech, Inc. Identifier: NCT01740336     History of Changes
Other Study ID Numbers: GO28509
2012-003262-41 ( EudraCT Number )
Study First Received: November 30, 2012
Last Updated: May 28, 2015

Additional relevant MeSH terms:
Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases
Albumin-Bound Paclitaxel
Antineoplastic Agents, Phytogenic
Antineoplastic Agents
Tubulin Modulators
Antimitotic Agents
Mitosis Modulators
Molecular Mechanisms of Pharmacological Action processed this record on March 29, 2017