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Toxicity Markers to Trastuzumab-Deruxtecan (T-DXd) In Patients With Advanced Breast Cancer

Identification Of Toxicity Markers to Trastuzumab-Deruxtecan (T-DXd) In Patients With Advanced Breast Cancer. Tox-DXd: a Prospective, Observational Study

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07049133
Acronym
Tox-DXd
Enrollment
84
Registered
2025-07-03
Start date
2025-07-31
Completion date
2027-12-31
Last updated
2026-01-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Metastatic Breast Cancer

Keywords

Metastatic Breast Cancer, Trastuzumab-Deruxtecan, ILD/pulmonitis

Brief summary

the anti-Human Epidermal Growth Factor Receptor 2 (HER2) Trastuzumab-Deruxtecan (T-DXd) has shown impressive clinical activity in pretreated patients with metastatic breast cancer (MBC) but is also associated with a non-negligible rate of adverse events that may lead to treatment discontinuation and/or the onset of pneumonitis/interstitial lung disease (ILD) The aim of the study is to identify and describe potentially predictive markers related to the onset of relevant T-DXd-related toxicities

Detailed description

Despite advanced in diagnosis and in the treatment management, advanced breast cancer (ABC) is still an incurable disease. Recent pharmaceutical developments have changed treatment algorithms in MBC and have further improved the overall prognosis of patients which exploit the tumor-targeting activity of monoclonal antibodies to deliver at the tumor site potent chemotherapeutic agents that would otherwise be exceedingly toxic if delivered systemically. Among them, new effective anticancer drugs, such as Trastuzumab-Deruxtecan (T-DXd), have revolutionized the clinical management of HER2-positive and HER2-low ABC. However, this drug is associated with a non-negligible rate of adverse events that can lead to treatment discontinuation and/or the onset of pneumonitis/interstitial lung disease (ILD), a potentially fatal adverse event. The aim of the study is to identify and describe potentially predictive markers related to the onset of relevant T-DXd-related toxicities (both any grade ILD/pneumonitis and any toxicity of grade ≥3) in a population of patients treated with T-DXd according to standard clinical practice.

Interventions

OTHERT-DXd toxicity marker identification

to find potential predictive markers associated with T-DXd-related toxicities

Sponsors

European Institute of Oncology
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Male or female, aged at least 18 years. * Histologically documented invasive breast cancer, either HER2-positive or HER2-low/ultralow. * Candidate to receive T-DXd as per standard practice. * Consent for the provision of blood samples for exploratory analyses.

Exclusion criteria

* Operable, non-metastatic breast cancer * Unwillingness to provide additional blood draws

Design outcomes

Primary

MeasureTime frameDescription
Comparison of mean levels of cytokine and T-DXd toxicity2 yearscytokine quantification in blood sample collected at baseline and before cycle 3 day 1

Secondary

MeasureTime frameDescription
Incidence of T-DXd Treatment Adverse Events2 yearsAdverse event (AE) collection with particular focus on ILD/pneumonitis and any other Grade 3 (G3) AE
T-DXd activity evaluation8 monthscollection of tumor assessment data during T-DXd therapy

Countries

Italy

Contacts

Primary ContactElisabetta Munzone, MD
elisabetta.munzone@ieo.it+39 0257489405
Backup ContactDavide Merli, PHD
davide.merli@ieo.it+39 0294372213

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026