CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 608 enrolled
Drug / intervention
Trastuzumab deruxtecan +3 moredrug
Likely dose
Trastuzumab deruxtecan 100 mgfrom 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/NCT03523585
NCT03523585Phase 3Completed

A Phase 3, Multicenter, Randomized, Open-label, Active-controlled Study of Trastuzumab Deruxtecan (DS-8201a), an Anti-HER2-antibody Drug Conjugate, Versus Treatment of Investigator's Choice for HER2-positive, Unresectable and/or Metastatic Breast Cancer Subjects Previously Treated With T-DM1

Daiichi Sankyo·interventional·Posted May 14, 2018·Updated Feb 27, 2026

In Brief

A Phase 3 clinical trial evaluating Trastuzumab deruxtecan, Capecitabine, and 2 other interventions for Breast Cancer. Completed, enrolled 608 participants across 227 sites in 15 countries.

Detailed Summary

This study will compare DS 8201a to standard treatment. Participants must have HER2 breast cancer that has been treated before. Their cancer: * cannot be removed by an operation * has spread to other parts of the body

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsBreast Cancer
CountriesAustralia, Belgium, Brazil, Czechia, France, Germany, Greece, Israel, Italy, Japan, South Korea, Spain, Turkey (Türkiye), United Kingdom, United States

Timeline

Phase 3CompletedFinished
20192020202120222023202420252026
First PostedMay 14, 2018
Enrollment StartAug 1, 2018
Primary CompletionJun 30, 2022
Study CompletionDec 23, 2025
TodayJul 2, 2026
Enrollment to primary: 3.9 yearsPosted 8.1 years ago

Interventions

Trastuzumab deruxtecandrug

DS-8201a is sterile lyophilized powder reconstituted into a sterile aqueous solution (100 mg/5 mL) to be administered as intravenous (IV) dose

Capecitabinedrug

Investigator's choice Standard of Care when combined with trastuzumab or lapatinib

Lapatinibdrug

Investigator's choice Standard of Care when combined with capecitabine

Trastuzumabdrug

Investigator's choice Standard of Care when combined with capecitabine