Atezolizumab and Cobimetinib or Idasanutlin in Participants With Stage IV or Unresectable Recurrent Estrogen Receptor Positive Breast Cancer
Public ClinicalTrials.gov record NCT03566485. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
BRE 17107: A Phase Ib/II Trial of Atezolizumab (an Anti-PD-L1 Monoclonal Antibody) With Cobimetinib (a MEK1/2 Inhibitor) or Idasanutlin (an MDM2 Antagonist) in Metastatic ER+ Breast Cancer
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This phase I/II trial studies the side effects and best dose of idasanutlin when given together with atezolizumab, and to see how well atezolizumab and cobimetinib or idasanutlin work in treating participants with stage IV estrogen-receptor positive (ER+) breast cancer, or ER+ breast cancer that has come back (recurrent) and cannot be removed by surgery (unresectable). Monoclonal antibodies, such as atezolizumab, may interfere with the ability of tumor cells to grow and spread. Cobimetinib and idasanutlin may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Giving atezolizumab with cobimetinib or atezolizumab with idasanutlin may work better in treating participants with estrogen-receptor positive breast cancer.
Study identification
- NCT ID
- NCT03566485
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Phase 1, Phase 2
- Enrollment
- 12 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- Female
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jul 9, 2018
- Primary completion
- Dec 9, 2020
- Completion
- Dec 9, 2020
- Last update posted
- Aug 10, 2021
2018 – 2020
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Vanderbilt-Ingram Cancer Center | Nashville | Tennessee | 3720932 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03566485, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Aug 10, 2021 · Synced Sep 29, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03566485 live on ClinicalTrials.gov.