Clinical trial · Observational
DESTINY Breast Respond HER2-(Ultra)Low Europe
A Prospective, Non-interventional Study (NIS) With Trastuzumab Deruxtecan For Patients With HER2-(Ultra)Low Expressing Unresectable and/or Metastatic Breast Cancer Accompanied By a Disease Registry of Patients Treated With Conventional Chemotherapy (DESTINY Breast Respond HER2-(Ultra)Low Europe)
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
Trastuzumab deruxtecan (T-DXd) as monotherapy is indicated for the treatment of adult patients with unresectable or metastatic HER2-low breast cancer who have received prior chemotherapy in the metastatic setting or developed disease recurrence during or within 6 months of completing adjuvant chemotherapy. Based on the extended therapeutic indication of Trastuzumab deruxtecan (Enhertu®), a new patient population will be enrolled, comprising adult patients with unresectable or metastatic HR-positive, HER2-low, or HER2-(ultra)low breast cancer who have received at least one endocrine therapy in the metastatic setting and are not considered suitable for endocrine therapy as the next line of treatment.
Conditions
Conditions (4)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| HER2-low Expressing Breast Cancer | — | UNRESOLVED | — |
| HER2-(Ultra)Low Expressing Breast Cancer | — | UNRESOLVED | — |
| Metastatic Breast Cancer | Malignant Breast Neoplasm | CURATED_BROADER | 0.78 |
| Unresectable Breast Cancer | Malignant Breast Neoplasm | CURATED_BROADER | 0.78 |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Trastuzumab deruxtecan | Drug | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- label
- Study Group 1
- description
- Adult participants with 2L+ HER2-low expressing unresectable and/or metastatic breast cancer who have received prior chemotherapy in the metastatic setting or developed disease recurrence during or within 6 months of completing adjuvant chemotherapy. In addition, patients with HER2-low breast cancer treated with conventional chemotherapy will be enrolled. The participants on conventional chemotherapy will be analyzed as exploratory only.
- interventionNames
- Drug: Trastuzumab deruxtecan
- label
- Study Group 2
- description
- Adult participants in the first-line setting with hormone receptor (HR) positive, HER2-low or HER2-(ultra)low breast cancer who have received at least one endocrine therapy in the metastatic setting and who are not considered suitable for endocrine therapy as the next line of treatment and have not received prior chemotherapy for advanced metastatic breast cancer.
- interventionNames
- Drug: Trastuzumab deruxtecan
Primary outcomes (1)
- measure
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: Study Group 1 and Study Group 2 * Adult patient (age ≥ 18 years) with histological or cytological confirmed diagnosis of unresectable and/or mBC * Decision to newly initiate therapy of T-DXd or conventional chemotherapy according to the physicians choice per SmPC * Written and signed Informed Consent to participate in the study Study Group 1 * Documented HER2-low status (IHC1+, IHC2+/ISH-) * Patients who have received prior chemotherapy in the metastatic setting or * Patients who have developed disease recurrence during or within 6 months of completing adjuvant chemotherapy Study Group 2: * Documented HR+ status * Documented HER2-low status (IHC1+ or IHC2+/ISH-) or HER2-ultralow (defined as IHC 0 with membrane staining \[IHC \> 0 to \<1+\]) status * Patients who have received at least one endocrine therapy in the metastatic setting * Patients who have NOT received prior chemotherapy in the metastatic setting Exclusion Criteria: Study Group 1 and Study Group 2 * Pregnancy or breastfeeding * Patients who at time of data collection for this study are participating in or have participated in an interventional study that remains blinded. No other specific exclusion criteria are defined, as patients will be treated according to the proposed indication statements in the SmPC.
References
Publications (1)
- DERIVEDGuarneri V, Passos Coelho JL, Duhoux FP, Egle D, Garcia-Saenz JA, Penault-Llorca F, Selander K, Wildiers H, Zaman K, Laeis P, Lucerna M, Pierga JY. Study design for DESTINY-Breast Respond HER2-low Europe: T-DXd in patients with HER2-low advanced breast cancer. Future Oncol. 2024;20(18):1237-1250. doi: 10.2217/fon-2024-0015. Epub 2024 Apr 9. PMID 38592002