Trastuzumab-deruxtecan in Patients With Triple-negative Metastatic HER2-Low Breast Cancer: Real-world Experience in Brazil

NCT ID: NCT06231693

Last Updated: 2025-05-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Total Enrollment

2 participants

Study Classification

OBSERVATIONAL

Study Start Date

2023-12-04

Study Completion Date

2024-03-26

Brief Summary

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A national, multicenter, retrospective, observational study (Real-World Evidence-RWE) aimed to assess the efficacy of Trastuzumab-deruxtecan (T-DXd) in patients with triple-negative (RE\<10%) metastatic HER2-Low breast cancer.

Detailed Description

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Data from study DESTINY-04 have established T-DXd as the standard second-line treatment for HER2-Low breast tumors. In that study, about 90% of the population had estrogen-positive receptor (ER+) tumors, under-representing negative ER population. The investigators propose to assess T-DXd efficacy in HER2-Low/ER ≤10% patients in Brazilian population by means of a RWE analysis. Endpoints will be assessment of time to the next treatment, objective response rate, and real-world progression-free survival and real-world overall survival.

Conditions

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Breast Cancer

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

OTHER

Study Groups

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Trastuzumab-deruxtecan

Trastuzumab deruxtecan

Intervention Type DRUG

Patients with RE\<10% and HER2-Low breast cancer that have received Trastuzumab-deruxtecan in the metastatic setting

Interventions

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Trastuzumab deruxtecan

Patients with RE\<10% and HER2-Low breast cancer that have received Trastuzumab-deruxtecan in the metastatic setting

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Aged above 18 years old;
* Have advanced, hormone receptor negative (ER ≤10%), HER2-Low (1+ or 2+/FISH negative) breast cancer;
* Have been treated with at least one trastuzumab-deruxtecan dose for advanced disease (incurable) as a second or later line;
* Do not have active CNS metastatic lesions, characterized as stable, asymptomatic lesions and with no targeted treatment for at least 6 months.

Exclusion Criteria

* Have been previously treated with trastuzumab-deruxtecan (neoadjuvant, adjuvant, other neoplasms);
* Have other active neoplasms (except from non-melanoma skin tumors);
* Have serious or active non-oncology lung diseases;
* Have other primary and concurrent breast tumor with differing receptor profiles.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Hospital Israelita Albert Einstein

OTHER

Sponsor Role collaborator

AstraZeneca

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Italo Fernandes, MD

Role: PRINCIPAL_INVESTIGATOR

Hospital Israelita Albert Einstein

Locations

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Research Site

Porto Alegre, Rio Grande do Sul, Brazil

Site Status

Research Site

São Paulo, , Brazil

Site Status

Countries

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Brazil

Other Identifiers

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74911423.1.1001.0071

Identifier Type: OTHER

Identifier Source: secondary_id

D9673R00036

Identifier Type: -

Identifier Source: org_study_id

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