Clinical trial · Interventional
Basket Study for Oligo-metastatic Breast Cancer
Basket Study for Oligo-metastatic Breast Cancer Part 1: Trastuzumab-deruxtecan for HER2-positive Oligo-metastatic Breast Cancer
- 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)
The study will include patients with HER2-positive breast cancer and 1- 3 distant metastatic lesions, all amenable for curative intervention. Patients will be stratified by prior therapy and ER expression. In the initial baskets patients with be treated with trastuzumab-deruxtecan. Patients are treated with T-DXd 5.4mg/kg on a three weekly (21 day) basis, with the goal of 16 cycles leading to a treatment period of year, including local treatment. The first 8 cycles of T-DXd are administered neo-adjuvant, and 8 cycles adjuvant, after completion of local treatment. The proposed M22BOL trial is based on an important knowledge gap for regarding breast cancer patients with 'oligo-metastatic' disease who are usually not included in clinical trials for patients with metastatic disease since loco-regional treatments (radiation, surgery) with curative intent is not allowed in clinical trials for metastatic breast cancer. Moreover, neo-adjuvant trial protocols for early breast cancer exclude patients with distant metastases that can be treated with curative intent. This basket trial evaluates T-DXd for oligo-metastatic breast cancer with the goal to induce deep responses and subsequently long-lasting disease remissions and potentially cure.
Conditions
Conditions (1)
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-positive Breast Cancer | HER2-Positive Breast Carcinoma | ALIAS | 0.90 |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Trastuzumab deruxtecan | Drug | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- Trastuzumab-deruxtecan
- description
- 5.4mg/kg on a three weekly (21 day) basis, with the goal of 16 cycles leading to a treatment period of year, including local treatment. The first 8 cycles of T-DXd are administered neo-adjuvant, and 8 cycles adjuvant, after completion of local treatment.
- interventionNames
- Drug: Trastuzumab deruxtecan
Primary outcomes (1)
- measure
- Complete radiologic response
- timeFrame
- up to one year after start treatment
- description
- Number of patients to achieve radiologic response as defined by RECIST 11 with clearnace of ctDNA
Secondary outcomes (6)
- measure
- Number of patients free of progression
- timeFrame
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Histologic proof of infiltrating HER2-positive breast cancer (as determined by IHC 3+ and/or amplification by ISH)\[8\] * Histologic or cytologic proof of breast cancer metastases (at least one lesion) * Histologic determination of level of ER-expression * Oligo-metastatic disease as determined by standard of care diagnostics. The number of total individual distant metastases is limited to five, either in one organ or in 2-5 organ systems. Clustered lymph nodes that can be irradiated with curative intent in a single field are defined as single lesion. Pleuritis carcinomatosa, miliary spread of metastases (even within one organ), or peritoneal spread of metastases rules out oligo-metastatic disease and is not allowed. Initial staging by PET-CT (whole body) and MRI of breast and brain are mandatory, as is MRI liver or spine and pelvis in case of liver or bone metastases respectively. * In case of recurrent disease, a disease-free interval of 24 months. * Measurable disease according to RECIST1.1 * Patients must be at least 18 years of age and be able to give written informed consent and comply with study procedures. * World Health Organization (WHO) performance status 0 or 1 Exclusion Criteria: * prior line of therapy for metastatic disease. Exceptions are endocrine therapy or radiation considered to be part of the curative treatment, within 3 months before enrolment * leptomeningeal disease or central nervous metastases * clinically relevant obstruction or compression of spinal cord, central nervous, gastro-intestinal or cardiovascular system, that cannot be alleviated before start of treatment. * other malignancy, unless treated with curative intention and a long-term survival probability of \>95%, including in-situ or pre-malignant lesions.
References
Publications (0)
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