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.
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. Alternatively, 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.
As judged by investigator, any evidence of diseases (such as severe or uncontrolled medical conditions including systemic diseases, uncontrolled hypertension, serious gastrointestinal conditions associated with diarrhoea, chronic diverticulitis or previous complicated diverticulitis, history of allogeneic organ transplant, and active bleeding diseases, ongoing and active infection, significant cardiac conditions, substance abuse, psychiatric illness/social situation or psychological conditions) which, in the investigator's opinion, makes it undesirable for the participant to participate in the study or that would jeopardize compliance with the protocol.
History of another primary malignancy except for malignancy treated with curative intent with no known active disease within 2 years before Cycle 1 Day 1 and of low potential risk for recurrence.
Participants with a history of previously treated neoplastic spinal cord compression or treated, clinically inactive brain metastases that are no longer symptomatic, who require no treatment with corticosteroids or anticonvulsants, may be included in the study if they have recovered from acute toxic effects of radiotherapy.
Uncontrolled infection requiring IV antibiotics, antivirals or antifungals.
AstraZeneca
Lead sponsor
Daiichi Sankyo
Collaborator