NCT06103864 · AstraZeneca
A Phase III Study of Dato-DXd With or Without Durvalumab Compared With Investigator's Choice of Chemotherapy in Combination With Pembrolizumab in Patients With PD-L1 Positive Locally Recurrent Inoperable or Metastatic Triple-negative Breast Cancer
What this study is about
This is a Phase III, randomised, where both patients and doctors know the treatment given, 3-treatment group$1, multicentre, international study assessing the effectiveness and safety of Dato-DXd with or without durvalumab compared with investigator's choice chemotherapy in combination with pembrolizumab in participants with PD-L1 positive locally recurrent inoperable or metastatic TNBC.
View original scientific description
This is a Phase III, randomised, open-label, 3-arm, multicentre, international study assessing the efficacy and safety of Dato-DXd with or without durvalumab compared with investigator's choice chemotherapy in combination with pembrolizumab in participants with PD-L1 positive locally recurrent inoperable or metastatic TNBC.
Interventions
DRUG
Dato-DXd
Provided in 100mg vials. IV infusion. Experimental drug.
DRUG
Durvalumab
Provided in 500mg vials. IV infusion. Experimental drug.
DRUG
Paclitaxel
IV infusion. Active comparator.
DRUG
Nab-paclitaxel
IV infusion. Active comparator.
DRUG
Gemcitabine
IV infusion. Active comparator.
DRUG
Carboplatin
IV infusion. Active comparator.
DRUG
Pembrolizumab
IV infusion. Active comparator.
Primary outcome measures
Progression Free Survival (PFS)
Time frame: From randomisation until progression per RECIST 1.1 as assessed by BICR, or death due to any cause (anticipated to be up to 33 months).
PFS is defined as time from randomisation until progression per RECIST 1.1 as assessed by BICR, or death due to any cause. The comparison will include all randomised participants, as randomised, regardless of whether the participant withdraws from randomised therapy, receives another anticancer therapy or clinically progresses prior to RECIST 1.1 progression. However, if the participant progresses or dies immediately after 2 or more consecutive missed visits, the participant will be censored at the time of the latest evaluable assessment prior to the 2 missed visits. The measure of interest is the HR of PFS.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Histologically or cytologically documented locally recurrent inoperable, which cannot be treated with curative intent, or metastatic TNBC, as defined by the ASCO-CAP guidelines.
- ECOG PS 0 or 1.
- Participants are expected to provide an FFPE tumour sample collected from a locally recurrent inoperable or metastatic tumour. If no such sample is available, an archival FFPE tumour sample can be submitted; it must have been collected ≤ 3 years prior to the participant signing informed consent (screening start).
- PD-L1 positive TNBC based on results from an appropriately validated investigational PD-L1 (22C3) assay (CPS ≥ 10) from a sponsor designated central laboratory.
- No prior chemotherapy or other systemic anti-cancer therapy for metastatic or locally recurrent inoperable breast cancer. \- Patients with recurrent disease will be eligible if they have completed treatment for Stage I-III breast cancer, if indicated, and ≥6 months have elapsed between comple
Where
- Daphne, Alabama
- Springdale, Arkansas
- Duarte, California
- Glendale, California
- Sacramento, California
- Santa Rosa, California
- Aurora, Colorado
- New Haven, Connecticut
- Jacksonville, Florida
- Miami, Florida
- Palm Bay, Florida
- Plantation, Florida
And 45 more locations — see the full list below.
Collaborators
Daiichi Sankyo
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 25, 2026 · Source of record for eligibility and locations