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NCT03734029 · OUTCOME

Progression-free Survival (PFS) Based on Blinded Independent Central Review (BICR) in Participants With HER2-low Breast Cancer (All Patients) Regardless of Hormone Receptor Status

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
MEDIAN
Unit
months
Interval / dispersion
95% Confidence Interval
Time frame
From the date of randomization to the earliest date of the first objective documentation of radiographic disease progression or death due to any cause, up to approximately 3 years

What was measured

Progression-free survival (PFS), defined as at least a 20% increase in the sum of diameters of target lesions, was assessed from the date of randomization to the date of the first radiographic disease progression or death due to any cause, whichever came first. PFS was based on blinded independent central review (BICR) according to modified Response Evaluation Criteria in Solid Tumors (mRECIST) version 1.1. Median PFS was from Kaplan-Meier analysis. Confidence interval for median was computed using the Brookmeyer-Crowley method.

Analysis population: Progression-free survival (PFS) was assessed in the Full 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)373
Physician's Choice184

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Trastuzumab Deruxtecan (T-DXd)9.9Not reported9.011.3Not reported
Physician's Choice5.1Not reported4.26.8Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        9.0
        upper Limit
        11.3
        value
        9.9
      2. group Id
        OG001
        lower Limit
        4.2
        upper Limit
        6.8
        value
        5.1
denoms
  1. counts
    1. group Id
      OG000
      value
      373
    2. group Id
      OG001
      value
      184
    units
    Participants
description
Progression-free survival (PFS), defined as at least a 20% increase in the sum of diameters of target lesions, was assessed from the date of randomization to the date of the first radiographic disease progression or death due to any cause, whichever came first. PFS was based on blinded independent central review (BICR) according to modified Response Evaluation Criteria in Solid Tumors (mRECIST) version 1.1. Median PFS was from Kaplan-Meier analysis. Confidence interval for median was computed using the Brookmeyer-Crowley method.
dispersion Type
95% Confidence Interval
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
MEDIAN
population Description
Progression-free survival (PFS) was assessed in the Full Analysis Set.
reporting Status
POSTED
time Frame
From the date of randomization to the earliest date of the first objective documentation of radiographic disease progression or death due to any cause, up to approximately 3 years
title
Progression-free Survival (PFS) Based on Blinded Independent Central Review (BICR) in Participants With HER2-low Breast Cancer (All Patients) Regardless of Hormone Receptor Status
type
SECONDARY
unit Of Measure
months

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Preserved source evidence · Not medical advice