A Study to Evaluate TAlazoparib, Radiotherapy and Atezolizumab in gBRCA 1/2 Negative Patients With PD-L1+ Metastatic Triple Negative Breast Cancer
Public ClinicalTrials.gov record NCT04690855. 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
A Multi-institutional Phase II Study to Evaluate Efficacy and Safety of TAlazoparib, Radiotherapy and Atezolizumab in gBRCA 1/2 Negative Patients With PD-L1+ Metastatic Triple Negative Breast Cancer
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This is a Phase II study designed to assess efficacy and safety of talazoparib, high dose radiation, and atezolizumab in patients with metastatic TNBC that is PD-L1 positive. A total of 23 gBRCA pathogenic variant negative patients will be enrolled. All patients will be treated with induction talazoparib of 1mg PO daily starting Day 1. Patients will then receive 8 Gy x 3 fractions to 2-4 metastatic lesions beginning Day 12,13, or 14 and given QOD. 840 mg of atezolizumab will be given intravenously (IV) on Day 15 of the 1st cycle and then on Day 1 and Day 15 of the remaining cycles. The sequence of administration is not specified on the days in which talazoparib and atezolizumab are given on the same day. Each cycle equals 28 days. Treatment will continue until progression or severe toxicity. A safety lead in of up to 6 patients will be performed. Immune-related and non-immune related adverse events will be tracked up to 12 weeks post initiation of atezolizumab, as the majority of treatment-related toxicities from talazoparib, radiation, and atezolizumab occur within this time period.
Study identification
- NCT ID
- NCT04690855
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 1 participant
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- 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
- Oct 3, 2021
- Primary completion
- Feb 17, 2022
- Completion
- Dec 19, 2022
- Last update posted
- Dec 3, 2023
2021 – 2022
United States locations
- U.S. sites
- 2
- U.S. states
- 2
- U.S. cities
- 2
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of Alabama at Birmingham | Birmingham | Alabama | 35294 | — |
| Winship Cancer Institute of Emory University | Atlanta | Georgia | 30322 | — |
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 NCT04690855, 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 Dec 3, 2023 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04690855 live on ClinicalTrials.gov.