Recruiting NCT06103864

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 (TROPION-Breast05)

Phase III Interventional Breast Cancer

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied: The protocol lists: Dato-DXd, Durvalumab, Paclitaxel, Nab-paclitaxel.
Who it may be relevant to: Registry conditions: Breast Cancer. Basic parameters: from 18 years · All.
What needs checking: Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place: United States, Argentina, Australia, Brazil, Canada +19
Next step: Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

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Official title

A Phase III, Open-label, Randomised Study of Datopotamab Deruxtecan (Dato-DXd) With or Without Durvalumab Compared With Investigator's Choice of Chemotherapy (Paclitaxel, Nab-paclitaxel or Gemcitabine + Carboplatin) in Combination With Pembrolizumab in Patients With PD-L1 Positive Locally Recurrent Inoperable or Metastatic Triple-negative Breast Cancer (TROPION-Breast05)

Overview

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.

Detailed description

The primary objective of the study is to demonstrate superiority of Dato-DXd + durvalumab relative to ICC + pembrolizumab by assessment of PFS as assessed by BICR in participants with PD-L1 positive locally recurrent inoperable or metastatic TNBC.

The study will be stratified based on geographic location (US/Canada/Europe vs. Dato-DXd monotherapy enrolling countries vs. rest of world), disease-free interval (DFI) history (de novo vs. prior DFI 6 to 12 months vs. prior DFI \> 12 months), and prior PD-1/PD-L1 treatment for early stage TNBC (yes vs. no).

This study aims to see if Dato-DXd with durvalumab allows patients to live longer without their breast cancer getting worse, or simply to live longer, compared to patients receiving standard of care chemotherapy and pembrolizumab. This study is also looking to see how the treatment and the breast cancer affects patients' quality of life.

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).]

Secondary outcome measures (12)

Overall Survival (OS) [Time frame: From randomisation until the date of death due to any cause (anticipated to be up to 64 months).]
Objective Response Rate (ORR) [Time frame: From randomisation up until progression (anticipated to be up to 33 months).]
Duration of Response (DoR) [Time frame: From the date of first documented response until date of documented progression per RECIST 1.1, as assessed by BICR/investigator assessment or death due to any cause (anticipated to be up to 33 months).]
Progression-Free Survival (PFS) by Investigator assessment [Time frame: From randomisation until progression per RECIST 1.1 as assessed by the investigator, or death due to any cause (anticipated to be up to 33 months).]
Clinical Benefit Rate (CBR) at 24 weeks [Time frame: From randomisation up until progression, or the last evaluable assessment in the absence of progression (anticipated to be up to 33 months).]
Time to deterioration (TTD) in breast and arm symptoms in participants treated with Dato-DXd + durvalumab compared with ICC + pembrolizumab [Time frame: From the date of randomisation to the date of deterioration (from randomization to 18 weeks post-progression).]
Time to deterioration (TTD) in pain in participants treated with Dato-DXd + durvalumab compared with ICC + pembrolizumab [Time frame: Time from the date of randomisation to the date of deterioration (from randomization to 18 weeks post-progression).]
Time to deterioration (TTD) in physical functioning in participants treated with Dato-DXd + durvalumab compared with ICC + pembrolizumab [Time frame: From the date of randomisation to the date of deterioration (from randomization to 18 weeks post-progression).]
Time to deterioration (TTD) in GHS/QoL in participants treated with Dato-DXd + durvalumab compared with ICC + pembrolizumab [Time frame: From the date of randomisation to the date of deterioration (from randomization to 18 weeks post-progression).]
Time to First Subsequent Therapy (TFST) [Time frame: From randomisation until the start date of the first subsequent anticancer therapy after discontinuation of randomised treatment, or death due to any cause (anticipated to be up to 64 months).]
Time to Second Subsequent Therapy (TSST) [Time frame: From randomisation until the start date of the second subsequent anti cancer therapy after discontinuation of first subsequent treatment, or death due to any cause (anticipated to be up to 64 months).]
Progression Free Survival 2 (PFS2) [Time frame: From the randomisation to the earliest of the progression event (following the initial progression), subsequent to first subsequent therapy, or death (anticipated to be up to 64 months).]

Eligibility criteria

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. 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.
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 completion of treatment with curative intent and the first documented recurrence.

Eligible for one of the chemotherapy options listed as ICC (paclitaxel, nab-paclitaxel, or gemcitabine + carboplatin).
Measurable disease as per RECIST 1.1.
Adequate bone marrow reserve and organ function.
Male and female participants of childbearing potential must agree to use protocol-specified method(s) of contraception.

Exclusion criteria

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.

\- Participants with 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.
Active or uncontrolled hepatitis B or C virus infection.
Known HIV infection that is not well controlled.
Uncontrolled or significant cardiac disease.
History of non-infectious ILD/pneumonitis (including radiation pneumonitis) that required steroids, current ILD/pneumonitis, or suspected ILD/pneumonitis that cannot be ruled out by imaging at screening.
Clinically severe pulmonary function compromise.
Clinically significant corneal disease.
Active or prior documented autoimmune or inflammatory disorders.
Prior exposure to any treatment including ADC containing a chemotherapeutic agent targeting topoisomerase I and TROP2-targeted therapy.
Any concurrent anti-cancer treatment.
Participants with a known severe hypersensitivity to PD-1/PD-L1 inhibitors or Dato-DXd.
Currently pregnant (confirmed with positive pregnancy test), breastfeeding or planning to become pregnant.

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation: Randomized
Model: Parallel assignment
Masking: Open label
Primary purpose: Treatment