CI

At a glance

ClinicalIndex Comparison Record
Phase 3Active· 506 enrolled
Drug / intervention
Trastuzumab Deruxtecandrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04739761
NCT04739761Phase 3Active

An Open-Label, Multinational, Multicenter, Phase 3b/4 Study of Trastuzumab Deruxtecan in Patients With or Without Baseline Brain Metastasis With Previously Treated Advanced/Metastatic HER2-Positive Breast Cancer (DESTINY-Breast12)

AstraZeneca·interventional·Posted Feb 5, 2021·Updated May 12, 2026

In Brief

A Phase 3 clinical trial evaluating Trastuzumab Deruxtecan for Breast Cancer. Active but no longer recruiting, targeting 506 participants across 81 sites in 18 countries.

Detailed Summary

This is open-label, multicenter, international study, assessing the efficacy and safety of Trastuzumab deruxtecan (T-DXd) in participants with or without brain metastasis (BMs), with previously-treated advanced/metastatic HER2-positive breast cancer whose disease has progressed on prior anti-HER2-based regimens and who received no more than 2 lines/regimens of therapy in the metastatic setting (excluding tucatinib).

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsBreast Cancer
CountriesAustralia, Belgium, Canada, Denmark, Finland, Germany, Ireland, Italy, Japan, Netherlands, Norway, Poland, Portugal, Spain, Sweden, Switzerland, United Kingdom, United States
CollaboratorsDaiichi Sankyo

Timeline

Phase 3Active
2021202220232024202520262027
First PostedFeb 5, 2021
Enrollment StartJun 22, 2021
Primary CompletionFeb 8, 2024
Study CompletionMay 26, 2027
TodayJul 2, 2026
Enrollment to primary: 2.6 yearsPosted 5.4 years ago

Interventions

Trastuzumab Deruxtecandrug

Participants will receive T-DXd administered using an IV bag containing 5% (w/v) dextrose injection infusion solution.