RecruitingNCT06727227

Real-world Study of Trastuzumab Deruxtecan in Patients With Unresectable or Metastatic HER2-low Breast Cancer

REal-world Study of Trastuzumab deruXtecan in Patients With unresectabLe or Metastatic Breast Cancer Expressing HER2-lOw From BulgaRia and SlovEnia (EXPLORE)


Sponsor

AstraZeneca

Enrollment

135 participants

Start Date

Jan 29, 2025

Study Type

OBSERVATIONAL

Conditions

Summary

A longitudinal, non-interventional study with trastuzumab deruxtecan for patients with HER2-low expressing unresectable or metastatic breast cancer in Bulgaria and Slovenia


Eligibility

Min Age: 18 Years

Inclusion Criteria4

  • Adult patient (age ≥18 years) with histological or cytological confirmed diagnosis of unresectable or mBC.
  • Documented HER2-low status (IHC1+, IHC2+/ISH-) in patients who have received prior chemotherapy in the metastatic setting or documented HER2-low status (IHC 1+, IHC 2+/ISH-) in patients who have developed disease recurrence during or within 6 months of completing adjuvant chemotherapy.
  • Recent prior decision to initiate therapy of T-DXd per SmPC (up to 30 days). Documentation confirming this decision will be required and collected.
  • Able and willing to provide informed consent.

Exclusion Criteria4

  • Pregnancy or breastfeeding.
  • History of other primary malignancies in 2 years prior to unresectable or mBC diagnosis.
  • Patients who at time of data collection for this study are participating in or have participated in an interventional study that remains blinded.
  • HER2-low status patients who have previously documented HER2+ status in the same tumor.

Interventions

DRUGtrastuzumab deruxtecan

T-DXd


Locations(14)

Research Site

Panagyurishte, Pazardzhik, Bulgaria

Research Site

Burgas, Bulgaria

Research Site

Plovdiv, Bulgaria

Research Site

Sofia, Bulgaria

Research Site

Sofia, Bulgaria

Research Site

Sofia, Bulgaria

Research Site

Sofia, Bulgaria

Research Site

Sofia, Bulgaria

Research Site

Sofia, Bulgaria

Research Site

Sofia, Bulgaria

Research Site

Stara Zagora, Bulgaria

Research Site

Varna, Bulgaria

Research Site

Ljubljana, Slovenia

Research Site

Maribor, Slovenia

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NCT06727227


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