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NCT03734029 · CITED IN SOURCE DOCUMENTS

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

An NCI or FDA source cites this study. A citation does not establish that it applies to an individual diagnosis.

Phase
PHASE3
Status at capture
ACTIVE NOT RECRUITING
Registry last update
2025-10-06

This study will compare DS-8201a to physician choice standard treatment. Participants must have HER2-low breast cancer that has been treated before. Participants' cancer: * Cannot be removed by an operation * Has spread to other parts of the body

Open the original ClinicalTrials.gov record → · Download preserved record

What did the study report?

Outcomes, safety and baseline populations are separate source sections. Quality-of-life measures appear under their original outcome titles.

flow

Participant flow

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baseline

Baseline characteristics

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outcome · POSTED

Progression-free Survival (PFS) Based on Blinded Independent Central Review (BICR) in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer

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outcome · POSTED

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

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outcome · POSTED

Progression-free Survival Based on Investigator Assessment in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer

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outcome · POSTED

Progression-free Survival Based on Investigator Assessment in Participants With HER2-low Breast Cancer (All Patients)

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outcome · POSTED

Overall Survival (OS) in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer

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outcome · POSTED

Number of Overall Survival Events (Deaths)

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outcome · POSTED

Overall Survival (OS) in All Patients

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outcome · POSTED

Best Overall Response and Confirmed Objective Response Rate (ORR) in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer

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outcome · POSTED

Best Overall Response and Confirmed Objective Response Rate (ORR) in Participants With HER2-low Breast Cancer (All Patients)

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outcome · POSTED

Duration of Response in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer

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outcome · POSTED

Duration of Response in Participants With HER2-low Breast Cancer (All Patients)

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outcome · POSTED

All-Cause Mortality

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adverse events

Adverse events

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more info

Limitations, agreements, and source contact

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Who could take part
eligibility Criteria
Inclusion Criteria: * Is the age of majority in their country * Has pathologically documented breast cancer that: 1. Is unresectable or metastatic 2. Has low-HER2 expression defined as IHC 2+/ISH- or IHC 1+ (ISH- or untested) 3. Is HR-positive or HR-negative 4. Has progressed on, and would no longer benefit from, endocrine therapy 5. Has been treated with 1 to 2 prior lines of chemotherapy/adjuvant in the recurrent or metastatic setting 6. Was never previously HER2-positive (ICH 3+ or ISH+) on prior pathology testing (per American Society of Clinical Oncology-College of American Pathologists \[ASCO-CAP\] guidelines) * Has documented radiologic progression (during or after most recent treatment) * Has adequate archival tumor samples available or is wiling to provide fresh biopsies prior to randomization for: 1. assessment of HER2 status 2. assessment of post-treatment status * Has at least 1 measurable lesion per Response Evaluation Criteria In Solid Tumors 1.1 * Has protocol-defined adequate cardiac, bone marrow, renal, hepatic and blood clotting functions * Male and female participants of reproductive/childbearing potential, agrees to follow instructions for method(s) of contraception and agrees to avoid preserving ova or sperm for at least 4.5 months after treatment (or longer, per locally approved labels) Exclusion Criteria: * Is ineligible for all options in the physician's choice arm * Has breast cancer ever assessed with high-HER2 expression * Has previously been treated with any anti-HER2 therapy, including an antibody drug conjugate * Has uncontrolled or significant cardiovascular disease * Has spinal cord compression or clinically active central nervous system metastases * Has history of (noninfectious) interstitial lung disease (ILD)/pneumonitis that required steroids, has current ILD/pneumonitis, or suspected ILD/pneumonitis that cannot be ruled out by imaging at screening * Has any medical history or condition that per protocol or in the opinion of the investigator is inappropriate for the study
healthy Volunteers
false
minimum Age
18 Years
sex
ALL
std Ages
  1. ADULT
  2. OLDER_ADULT
Treatment arms and interventions
arm Groups
  1. description
    HER2-low, unresectable, and/or metastatic breast cancer participants previously treated with chemotherapy randomized to DS8201a
    intervention Names
    1. Drug: Trastuzumab deruxtecan (DS-8201a)
    label
    Trastuzumab deruxtecan
    type
    EXPERIMENTAL
  2. description
    HER2-low, unresectable, and/or metastatic breast cancer participants previously treated with chemotherapy randomized to Physician's choice from the following options: * Capecitabine * Eribulin * Gemcitabine * Paclitaxel * Nab-paclitaxel
    intervention Names
    1. Drug: Capecitabine
    2. Drug: Eribulin
    3. Drug: Gemcitabine
    4. Drug: Paclitaxel
    5. Drug: Nab-paclitaxel
    label
    Physician's Choice
    type
    ACTIVE_COMPARATOR
interventions
  1. arm Group Labels
    1. Trastuzumab deruxtecan
    description
    DS-8201a is a lyophilized powder reconstituted into a sterile aqueous solution (100 mg/5 mL) to be administered intravenously
    name
    Trastuzumab deruxtecan (DS-8201a)
    other Names
    1. DS-8201a
    type
    DRUG
  2. arm Group Labels
    1. Physician's Choice
    description
    Administered according to label, as one option for Physician's Choice (determined before randomization)
    name
    Capecitabine
    type
    DRUG
  3. arm Group Labels
    1. Physician's Choice
    description
    Administered according to label, as one option for Physician's Choice (determined before randomization)
    name
    Eribulin
    type
    DRUG
  4. arm Group Labels
    1. Physician's Choice
    description
    Administered according to label, as one option for Physician's Choice (determined before randomization)
    name
    Gemcitabine
    type
    DRUG
  5. arm Group Labels
    1. Physician's Choice
    description
    Administered according to label, as one option for Physician's Choice (determined before randomization)
    name
    Paclitaxel
    type
    DRUG
  6. arm Group Labels
    1. Physician's Choice
    description
    Administered according to label, as one option for Physician's Choice (determined before randomization)
    name
    Nab-paclitaxel
    type
    DRUG
Study design
allocation
RANDOMIZED
intervention Model
PARALLEL
intervention Model Description
Parallel model, randomized at a 2:1 ratio
masking Info
masking
NONE
primary Purpose
TREATMENT
Enrollment
count
557
type
ACTUAL
Registered outcome plans (not posted results)
other Outcomes
  1. 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.
    measure
    All-Cause Mortality
    time Frame
    From the date of randomization up to the date of death due to any cause, up to approximately 3 years
primary Outcomes
  1. 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) in the hormone receptor-positive cohort 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.
    measure
    Progression-free Survival (PFS) Based on Blinded Independent Central Review (BICR) in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer
    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
secondary Outcomes
  1. 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.
    measure
    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
    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
  2. 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 investigator assessment in the hormone receptor-positive cohort 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.
    measure
    Progression-free Survival Based on Investigator Assessment in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer
    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
  3. 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 investigator assessment 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.
    measure
    Progression-free Survival Based on Investigator Assessment in Participants With HER2-low Breast Cancer (All Patients)
    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
  4. description
    Overall survival (OS) was defined as the time from the date of randomization to the date of death due to any cause. If there was no death reported for a participant before the data cutoff for OS analysis, OS was censored at the last contact date at which the participant was known to be alive.
    measure
    Overall Survival (OS) in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer
    time Frame
    From the date of randomization up to the date of death due to any cause, up to approximately 3 years
  5. measure
    Number of Overall Survival Events (Deaths)
    time Frame
    From the date of randomization up to the date of death due to any cause, up to approximately 3 years
  6. description
    Overall survival (OS) was defined as the time from the date of randomization to the date of death due to any cause. If there was no death reported for a participant before the data cutoff for OS analysis, OS was censored at the last contact date at which the participant was known to be alive.
    measure
    Overall Survival (OS) in All Patients
    time Frame
    From the date of randomization up to the date of death due to any cause, up to approximately 3 years
  7. description
    Best overall response rate and confirmed objective response rate (ORR) were assessed by blinded independent central review (BICR) and investigator assessment. Complete response (CR) was defined as a disappearance of all target lesions, partial response (PR) was defined as at least a 30% decrease in the sum of diameters of target lesions, and stable disease (SD) was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD; at least a 20% increase in the sum of diameters of target lesions. Confirmed ORR was defined as the number of participants with complete and partial responses and confirmed by a second assessment.
    measure
    Best Overall Response and Confirmed Objective Response Rate (ORR) in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer
    time Frame
    From screening and every 6 weeks up to withdrawal of subject consent, progressive disease (PD), or unacceptable toxicity, up to approximately 3 years
  8. description
    Best overall response rate and confirmed objective response rate (ORR) were assessed by blinded independent central review (BICR) and investigator assessment. Complete response (CR) was defined as a disappearance of all target lesions, partial response (PR) was defined as at least a 30% decrease in the sum of diameters of target lesions, and stable disease (SD) was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD; at least a 20% increase in the sum of diameters of target lesions. Confirmed ORR was defined as the number of participants with complete and partial responses and confirmed by a second assessment.
    measure
    Best Overall Response and Confirmed Objective Response Rate (ORR) in Participants With HER2-low Breast Cancer (All Patients)
    time Frame
    From screening and every 6 weeks up to withdrawal of subject consent, progressive disease (PD), or unacceptable toxicity, up to approximately 3 years
  9. description
    Duration of Response (DoR) is defined as the date of the first documented objective response (complete response \[CR\] or partial response \[PR\]) to the first documented disease progression or death, whichever occurs first. DoR was based on blinded independent central review (BICR) and investigator assessment. Median was from Kaplan-Meier estimate. Confidence interval for median was computed using the Brookmeyer-Crowley method.
    measure
    Duration of Response in the Hormone Receptor-Positive Cohort in Participants With HER2-low Breast Cancer
    time Frame
    From the date of the first documented objective response (CR or PR) to the first documented disease progression or death, whichever occurs first, up to approximately 3 years
  10. description
    Duration of Response (DoR) is defined as the date of the first documented objective response (complete response \[CR\] or partial response \[PR\]) to the first documented disease progression or death, whichever occurs first. DoR was based on blinded independent central review (BICR) and investigator assessment. Median was from Kaplan-Meier estimate. Confidence interval for median was computed using the Brookmeyer-Crowley method.
    measure
    Duration of Response in Participants With HER2-low Breast Cancer (All Patients)
    time Frame
    From the date of the first documented objective response (CR or PR) to the first documented disease progression or death, whichever occurs first, up to approximately 3 years
Full study description
brief Summary
This study will compare DS-8201a to physician choice standard treatment. Participants must have HER2-low breast cancer that has been treated before. Participants' cancer: * Cannot be removed by an operation * Has spread to other parts of the body
detailed Description
This is a randomized, 2-arm, Phase 3, open-label, multicenter study to compare the safety and efficacy of trastuzumab deruxtecan versus the physician's choice (2:1) in HER2-low, unresectable and/or metastatic breast cancer participants. The Sponsor proposes to define a new HER2-low population in this trial including tumors with IHC 1+ and IHC 2+/ISH- HER2 expression.
Source references
references
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    Modi S, Jacot W, Yamashita T, Sohn J, Vidal M, Tokunaga E, Tsurutani J, Ueno NT, Prat A, Chae YS, Lee KS, Niikura N, Park YH, Xu B, Wang X, Gil-Gil M, Li W, Pierga JY, Im SA, Moore HCF, Rugo HS, Yerushalmi R, Zagouri F, Gombos A, Kim SB, Liu Q, Luo T, Saura C, Schmid P, Sun T, Gambhire D, Yung L, Wang Y, Singh J, Vitazka P, Meinhardt G, Harbeck N, Cameron DA; DESTINY-Breast04 Trial Investigators. Trastuzumab Deruxtecan in Previously Treated HER2-Low Advanced Breast Cancer. N Engl J Med. 2022 Jul 7;387(1):9-20. doi: 10.1056/NEJMoa2203690. Epub 2022 Jun 5.
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    pmid
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    pmid
    36780610
    type
    DERIVED
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        Figure 7: Kaplan-Meier Plot of Progression Free Survival (Overall Population) DESTINY-Breast04 The efficacy of ENHERTU was evaluated in study DESTINY-Breast04 (NCT03734029), a randomized, multicenter, open-label study that enrolled 557 adult patients with unresectable or metastatic HER2-low breast cancer. The study included 2 coh
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        receptor&#8211;positive and hormone receptor&#8211;negative tumors): </p> <div class="pdq-content-list"><ol id="_2435"><li> The <a href="/clinicaltrials/NCT03734029">DESTINY-Breast04</a> trial (NCT03734029) randomly assigned 557 women in a 2:1 ratio to receive either trastuzumab deruxtecan or the physician&#8217;s choice
        end
        603940
        exact text
        NCT03734029
        start
        603929
      2. context exact
        ptor&#8211;negative tumors): </p> <div class="pdq-content-list"><ol id="_2435"><li> The <a href="/clinicaltrials/NCT03734029">DESTINY-Breast04</a> trial (NCT03734029) randomly assigned 557 women in a 2:1 ratio to receive either trastuzumab deruxtecan or the physician&#8217;s choice of chemotherapy (capecitabine, eribulin,
        end
        603981
        exact text
        NCT03734029
        start
        603970
      offset unit
      unicode_code_points
      source file
      /tmp/cancer-full-research/nci/raw/29bf1e5a1d739974ed.html
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      Source null
      source kind
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      source record id
      Source null
      source retrieved at
      2026-09-09T23:21:35.419733+00:00
      source string basis
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      source string sha256
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      source title
      Breast Cancer Treatment (PDQ®)–Health Professional Version
      source update dates
      1. context
        Updated: April 25, 2025
        datetime
        2025-04-25T12:00:00Z
        display
        April 25, 2025

    Preserved source evidence · Not medical advice