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Contact the study team using the details below to take part. If there are no contact details below please ask your doctor in the first instance.

Contact Information:

Dr Peter Schmid
+44 (0)20 7882 8764
p.schmid@qmul.ac.uk


Dr DIAMOND Coordinating team -
-
bci-diamond@qmul.ac.uk


Study Location:

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Be Part of Research - Trial Details - Is datopotamab deruxtecan plus durvalumab more effective than datopotamab deruxtecan alone at treating patients with metastatic breast cancer?

Is datopotamab deruxtecan plus durvalumab more effective than datopotamab deruxtecan alone at treating patients with metastatic breast cancer?

Recruiting

Open to: All Genders

Age: Adult

Medical Conditions

Locally advanced or metastatic PD-L1 negative, triple-negative breast cancer


This information is provided directly by researchers, and we recognise that it isn't always easy to understand. We are working with researchers to improve the accessibility of this information. In some summaries, you may come across links to external websites. These websites will have more information to help you better understand the study.


This study is being carried out to see if datopotamab deruxtecan in combination with durvalumab is effective than datopotamab deruxtecan alone in treating PDL1-negative advanced or metastatic triple-negative breast cancer (TNBC). Breast cancer is the most common malignancy in women and the second most common cancer overall. The term TNBC is used to define tumours that do not express oestrogen receptors, progesterone receptors and HER2 receptors. TNBC comprises 10 -15% of all breast cancers. It remains the subtype with the poorest outcome and there is a significant need to develop new therapies for this group of patients, especially. Moreover, the PDL1-negative tumour has demonstrated no benefit from standard first-line treatment of chemotherapy plus immune checkpoint inhibitors. Datopotamab deruxtecan is an antibody drug conjugate (ADC) that targets tumour-associated calcium signal transducer 2, TROP2, a transmembrane protein that is highly expressed in various epithelial tumors, including breast cancer. Durvalumab is an immune checkpoint inhibitor and is expected to stimulate the patient’s antitumour immune response by binding to PD-L1 and shifting the balance toward an antitumour response. The preclinical and clinical evidence have suggested synergistic activity between antibody drug conjugate and immune checkpoint inhibitor.

Start dates may differ between countries and research sites. The research team are responsible for keeping the information up-to-date.  

The recruitment start and end dates are as follows:

31 Jul 2025 31 Jul 2027

Patients will be randomly placed into one of two treatment groups. One group will receive datopotamab deruxtecan in combination with durvalumab and the other group will receive datopotamab deruxtecan alone. Treatment will continue unless there is evidence of unacceptable toxicity, disease progression, or if the patient requests to stop the treatment or dies. Safety and tolerability as well as progression-free survival, overall survival, clinical benefit rate, duration of response and duration of clinical benefit and quality of life will be assessed.


Patients aged 18 years and over with PDL1-negative advanced or metastatic TNBC

You can take part if:



You may not be able to take part if:


1. Prior chemotherapy, immunotherapy (including durvalumab) or treatment with PARP inhibitors for advanced or metastatic breast cancer2. Prior treatment with immune checkpoint inhibitors (eg atezolizumab, pembrolizumab) or DNA topoisomerase I or TROP2- or HER2-targeting ADCs and TROP2 targeted therapy in the (neo)adjuvant setting within 6 months from the end of treatment and randomisation into this study3. Patients with prior allogeneic stem cell or solid organ transplantation.4. Patients must not have a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent), or had oral or IV steroids for 14 days prior to the first dose of study drug5. Administration of a live vaccine within 30 days prior to the first dose of study drug. 6. Active or prior documented autoimmune or inflammatory disorders7. History of idiopathic pulmonary fibrosis, drug-induced pneumonitis, radiation pneumonitis, organizing pneumonia requiring steroids, or evidence of active pneumonitis on screening chest CT scan.8. Active infection requiring systemic therapy.9. History of HIV infection10. Known active hepatitis infection or hepatitis C. 11. Known history of active tuberculosis 12. Any other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding that, in the investigator’s opinion, gives reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug, may affect the interpretation of the results, render the patient at high risk from treatment complications or interferes with obtaining informed consent.13. Psychological, familial, sociological, or geographical conditions that do not permit compliance with the study protocol.14. Concurrent treatment with other experimental drugs or participation in another clinical trial with therapeutic intent within 28 days prior to randomisation.15. Pregnant and lactating female patients.16. Major surgical procedure within 4 weeks prior to randomisation or anticipation of need for a major surgical procedure during the course of the study other than for diagnosis.17. Malignancies other than breast cancer within 5 years prior to Cycle 1, Day 1, with the exception of those with a negligible risk of metastasis or death and treated with expected curative outcome (such as adequately treated carcinoma in situ of the cervix, basal or squamous cell skin cancer, or ductal carcinoma in situ treated surgically with curative intent)18. Severe infections within 28 days prior to randomisation in the study, including but not limited to hospitalization for complications of infection, bacteraemia, or severe pneumonia.19. Any unresolved toxicity NCI CTCAE Grade ≥2 from previous anticancer therapy 20. Uncontrolled intercurrent illness21. History of leptomeningeal carcinomatosis22. Has clinically significant corneal disease23. Has a history of severe hypersensitivity reactions to other monoclonal antibodies24. History of active primary immunodeficiency 25. Known allergy or hypersensitivity to any of the study drugs or any of the study drug excipients.26. Brain metastases or neoplastic spinal cord compression. Patients whose brain metastases have been treated may participate provided they show radiographic stability (defined as two brain images, both of which are obtained after treatment of the brain metastases). These imaging scans should both be obtained at least four weeks apart and show no evidence of intracranial progression. In addition, any neurologic symptoms that developed either as a result of the brain metastases or their treatment must have resolved or be stable either, without the use of steroids, or are stable on a steroid dose of ≤10 mg/day of prednisone or its equivalent and anticonvulsants for at least 14 days prior to the start of treatment.27. Mean QT interval corrected for heart rate using Fridericia's formula (QTcF) ≥470 ms calculated from three ECGs (within 15 minutes at 5 minutes apart).28. Patients who have received prior anti–PD-1, anti PD-L1 or anti CTLA-4


Below are the locations for where you can take part in the trial. Please note that not all sites may be open.

  • Velindre Cancer Centre
    Velindre Road
    Cardiff
    CF14 2TL
  • University Hospital (coventry)
    Clifford Bridge Road
    Coventry
    CV2 2DX
  • Addenbrookes Hospital
    Hills Road
    Cambridge
    CB2 0QQ
  • Royal Cornwall Hospital
    Treliske
    Truro
    TR1 3LJ
  • University Hospital Southampton
    Tremona Road
    Southampton
    SO16 6YD
  • St Bartholomews Hospital
    W Smithfield
    London
    EC1A 7BE
  • Musgrove Park Hospital
    -
    Taunton
    TA1 5DA

This trial aims to find out information that may help people with advanced or metastatic triple-negative breast cancer. It is thought that this new drug treatment may be effective against this cancer type, and it must be compared with the current standard of care. We cannot guarantee that there will be a benefit to you during your treatment, as this is unknown at this stage.
The study medication may cause side effects. Participants will be asked by the study doctor or nurse about any problems they have at each visit. They can also telephone between visits if they are concerned. Possible side effects of study medications are listed in the PIS. All study drugs are administered directly into a vein through a cannula. Patients may experience pain, redness, swelling or itching at the administration site. Risks associated with drawing blood from the arm include pain, bruising, light-headedness and rarely infection. Patients will undergo CT scans of the chest/abdomen/pelvis with contrast material, or, if contrast is not suitable, they may have CT scans of the chest without contrast plus MRI scans of the abdomen/pelvis. Patients may also receive a CT head scan with contrast in cases where CNS metastases are clinically suspected, as per clinical practice. If a CT head scan with contrast is not suitable, they may have a CT head scan without contrast material plus an MRI head scan. CT scans use ionising radiation to form images. Ionising radiation can cause cell damage, which may, after many years or decades, turn cancerous, but the chance of this happening is extremely small. MRI scans are painless and safe and don’t expose the body to ionising radiation. Contrast material may need to be taken by mouth and/or injected into a vein. Oral contrast may cause side effects such as nausea, constipation, diarrhoea, and abdominal bloating. Pain, bruising, redness, swelling, and/or infection may occur at the administration site. An allergic reaction to the contrast material is possible. Clinical staff will treat any side effects as required.
It is not known what effects the study medication has on an unborn child. It is important that adequate contraception is used from signing the informed consent form and continue to use it throughout the total duration of the drug treatment and the drug washout period (at least 7 months after the last dose of Dato-DXd or if Dato-DXd has been discontinued more than 7 months previously and durvalumab was still ongoing, 90 days after the last dose of durvalumab).

Dr Peter Schmid
+44 (0)20 7882 8764
p.schmid@qmul.ac.uk


Dr DIAMOND Coordinating team -
-
bci-diamond@qmul.ac.uk



The study is sponsored by Queen Mary University of London and funded by AstraZeneca UK.




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Read full details for Trial ID: ISRCTN67463316
Last updated 30 June 2025

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