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Completed No phase listed Observational

International Breast Cancer Biomarker,Standard of Care and Real World Outcomes Study

ClinicalTrials.gov ID: NCT03078036

Public ClinicalTrials.gov record NCT03078036. 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.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 9:24 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

BREAKOUT -International Breast Cancer Biomarker, Standard of Care and Real World Outcomes Study

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

BREAKOUT -International Breast Cancer Biomarker, Standard of Care and Real World Outcomes Study BREAKOUT is a prospective cross-sectional cohort study of human epidermal growth factor receptor 2 negative metastatic breast cancer patients who have started 1st line systemic cytotoxic chemotherapy. The study will estimate the prevalence of germline breast cancer susceptibility gene in an otherwise unselected population, describe the treatments administered and estimate the associated clinical outcomes of overall survival and progression-free survival amongst mutation carriers within the context of a low poly ADP ribose polymerase inhibitor treatment setting. Other exploratory analyses may be undertaken to describe somatic breast cancer susceptibility gene and other homologous recombination repair gene mutations.

Study identification

NCT ID
NCT03078036
Recruitment status
Completed
Study type
Observational
Phase
Not listed
Lead sponsor
AstraZeneca
Industry
Enrollment
873 participants

Conditions and interventions

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
Mar 13, 2017 (Actual)
Primary completion
May 20, 2019 (Actual)
Completion
May 20, 2019 (Actual)
Last update posted
May 20, 2020

2017 – 2019

United States locations

U.S. sites
14
U.S. states
6
U.S. cities
13
Facility City State ZIP Site status
Research Site Santa Barbara California 93105 —
Research Site Denver Colorado 80218 —
Research Site Hialeah Florida 33012 —
Research Site Dallas Texas 75246 —
Research Site Denton Texas 76210 —
Research Site Flower Mound Texas 75028 —
Research Site Houston Texas 77024 —
Research Site Houston Texas 77089 —
Research Site Paris Texas 75460 —
Research Site San Antonio Texas 78217 —
Research Site The Woodlands Texas 77380 —
Research Site Newport News Virginia 23601 —
Research Site Vancouver Washington 98684 —
Research Site Wenatchee Washington 98801 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 84 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03078036, 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 May 20, 2020 · Synced Oct 21, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03078036 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →