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NCT03734029 · OUTCOME

All-Cause Mortality

Trastuzumab Deruxtecan (DS-8201a) Versus Investigator's Choice for HER2-low Breast Cancer That Has Spread or Cannot be Surgically Removed [DESTINY-Breast04] · Source last updated 2025-10-06

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
COUNT_OF_PARTICIPANTS
Unit
Participants
Interval / dispersion
Not reported
Time frame
From the date of randomization up to the date of death due to any cause, up to approximately 3 years

What was measured

All-cause mortality is defined as all anticipated and unanticipated deaths due to any cause, with the number and frequency of such events by arm or comparison group of the clinical study.

Analysis population: All-cause mortality was assessed in the Safety Analysis Set.

Groups in this outcome

Trastuzumab Deruxtecan (T-DXd)

Participants with HER2-low, unresectable, and/or metastatic breast cancer who were previously treated with chemotherapy were randomized to receive an intravenous infusion of DS8201a (initial dose of 5.4 mg/kg) over approximately 90 minutes. If there was no infusion-related reaction (IRR), T-DXd doses after the initial dose of 5.4 mg/kg were infused over a minimum of 30 minutes.

Physician's Choice

Participants with HER2-low, unresectable, and/or metastatic breast cancer who were previously treated with chemotherapy and randomized to a physician's choice (capecitabine, eribulin, gemcitabine, paclitaxel, and nab-paclitaxel) in which the dose, regimen, administration, and dose modification followed the label approved in the country of drug administration or the National Comprehensive Cancer Network guidelines.

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Trastuzumab Deruxtecan (T-DXd)371
Physician's Choice172

Reported measurements

Source class 1
Values in Participants · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
Trastuzumab Deruxtecan (T-DXd)148Not reportedNot reportedNot reportedNot reported
Physician's Choice88Not reportedNot reportedNot reportedNot reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        value
        148
      2. group Id
        OG001
        value
        88
denoms
  1. counts
    1. group Id
      OG000
      value
      371
    2. group Id
      OG001
      value
      172
    units
    Participants
description
All-cause mortality is defined as all anticipated and unanticipated deaths due to any cause, with the number and frequency of such events by arm or comparison group of the clinical study.
groups
  1. description
    Participants with HER2-low, unresectable, and/or metastatic breast cancer who were previously treated with chemotherapy were randomized to receive an intravenous infusion of DS8201a (initial dose of 5.4 mg/kg) over approximately 90 minutes. If there was no infusion-related reaction (IRR), T-DXd doses after the initial dose of 5.4 mg/kg were infused over a minimum of 30 minutes.
    id
    OG000
    title
    Trastuzumab Deruxtecan (T-DXd)
  2. description
    Participants with HER2-low, unresectable, and/or metastatic breast cancer who were previously treated with chemotherapy and randomized to a physician's choice (capecitabine, eribulin, gemcitabine, paclitaxel, and nab-paclitaxel) in which the dose, regimen, administration, and dose modification followed the label approved in the country of drug administration or the National Comprehensive Cancer Network guidelines.
    id
    OG001
    title
    Physician's Choice
param Type
COUNT_OF_PARTICIPANTS
population Description
All-cause mortality was assessed in the Safety Analysis Set.
reporting Status
POSTED
time Frame
From the date of randomization up to the date of death due to any cause, up to approximately 3 years
title
All-Cause Mortality
type
OTHER_PRE_SPECIFIED
unit Of Measure
Participants

Download exact source JSON → · Snapshot ctgov-results-191f4516d4760045304b24a0

Preserved source evidence · Not medical advice