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DS-8201a Versus T-DM1 for Human Epidermal Growth Factor Receptor 2 (HER2)-Positive, Unresectable and/or Metastatic Breast Cancer Previously Treated With Trastuzumab and Taxane [DESTINY-Breast03]

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ClinicalTrials.gov Identifier: NCT03529110
Recruitment Status : Recruiting
First Posted : May 18, 2018
Last Update Posted : May 10, 2019
Sponsor:
Collaborator:
Daiichi Sankyo Co., Ltd.
Information provided by (Responsible Party):
Daiichi Sankyo, Inc.

Brief Summary:
This study is designed to compare the anti-tumor activity as well as the safety and efficacy of DS-8201a versus T-DM1 in HER2-positive, unresectable and/or metastatic breast cancer subjects previously treated with trastuzumab and taxane.

Condition or disease Intervention/treatment Phase
Breast Cancer Drug: Trastuzumab deruxtecan (DS-8201a) Drug: Ado-trastuzumab emtansine (T-DM1) Phase 3

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 500 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase 3, Multicenter, Randomized, Open-Label, Active-Controlled Study of DS-8201a (Trastuzumab Deruxtecan), an Anti-HER2 Antibody Drug Conjugate (ADC), Versus Ado Trastuzumab Emtansine (T-DM1) for HER2-Positive, Unresectable and/or Metastatic Breast Cancer Subjects Previously Treated With Trastuzumab and Taxane
Actual Study Start Date : July 20, 2018
Estimated Primary Completion Date : February 2022
Estimated Study Completion Date : February 2022

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Breast Cancer

Arm Intervention/treatment
Experimental: Trastuzumab deruxtecan (DS-8201a)
HER2-positive, unresectable and/or metastatic breast cancer participants previously treated with trastuzumab and taxane randomized to treatment with DS-8201a
Drug: Trastuzumab deruxtecan (DS-8201a)
DS-8201a is sterile lyophilized powder reconstituted into a sterile aqueous solution (100 mg/5 mL) to be administered intravenously
Other Name: DS-8201a

Active Comparator: Ado-trastuzumab emtansine (T-DM1)
HER2-positive, unresectable and/or metastatic breast cancer participants previously treated with trastuzumab and taxane randomized to treatment with T-DM1
Drug: Ado-trastuzumab emtansine (T-DM1)
The treatment will be in accordance with the approved label
Other Name: T-DM1




Primary Outcome Measures :
  1. Progression-free survival (PFS) based on blinded independent central review (BICR) [ Time Frame: Within 45 months ]
    Time from the date of randomization to the earliest date of the first objective documentation of radiographic disease progression via BICR according to modified Response Evaluation Criteria in Solid Tumors (mRECIST) version 1.1 or death due to any cause


Secondary Outcome Measures :
  1. Overall survival (OS) [ Time Frame: At 45 months ]
    Time from the date of randomization to the date of death for any cause. If there is no death reported for a participant before the data cutoff for OS analysis, OS will be censored at the last contact date at which the participant is known to be alive.

  2. Objective response rate (ORR) based on BICR and investigator's assessment [ Time Frame: Within 45 months ]
    Percentage of participants who achieved a best overall response of complete response (CR) or partial response (PR), based on BICR and based on investigator assessment

  3. Duration of response (DoR) based on BICR and investigator's assessment [ Time Frame: Within 45 months ]
    Length of time response continued, based on BICR and investigator's assessment

  4. Clinical benefit rate (CBR) [ Time Frame: Within 45 months ]
    Percentage of participants receiving clinical benefit (CR, PR or more than 6 months stable disease) from the treatment, based on BICR and investigator's assessment

  5. Progression-free survival (PFS) based on investigator's assessment [ Time Frame: Within 45 months ]
    Time from the date of randomization to the first objective documentation of radiographic disease progression via investigator assessment, according to mRECIST version 1.1 or death due to any cause



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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Is the age of majority in their country
  • Has pathologically documented breast cancer that:

    1. is unresectable or metastatic
    2. has confirmed HER2-positive expression as determined according to American Society of Clinical Oncology - College of American Pathologists guidelines evaluated at a central laboratory
    3. was previously treated with trastuzumab and taxane in the advanced/metastatic setting or progressed within 6 months after neoadjuvant or adjuvant treatment involving a regimen including trastuzumab and taxane
  • Has documented radiologic progression (during or after most recent treatment or within 6 months after completing adjuvant therapy)
  • Is HER2 positive as confirmed by central laboratory assessment of most recent tumor tissue sample available. If archived tissue is not available, agrees to provide a fresh biopsy.
  • If of reproductive/childbearing potential, agrees to use a highly effective form of contraception or avoid intercourse during and upon completion of the study for at least 4.5 months after the last dose of DS-8201a or 7 months after the last dose of T-DM1
  • Has adequate renal and hepatic function

Exclusion Criteria:

  • Has previously been treated with an anti-HER2 antibody drug conjugate (ADC)
  • Has uncontrolled or significant cardiovascular disease
  • Has a history of (noninfectious) interstitial lung disease (ILD)/pneumonitis that required steroids, has current ILD/pneumonitis, or where suspected ILD/pneumonitis cannot be ruled out by imaging at screening
  • Has spinal cord compression or clinically active central nervous system (CNS) metastases, defined as untreated and symptomatic, or requiring therapy with corticosteroids or anticonvulsants to control associated symptoms.

    1. Participants with clinically inactive brain metastases may be included in the study.
    2. Participants with treated brain metastases that are no longer symptomatic and who require no treatment with corticosteroids or anticonvulsants may be included in the study if they have recovered from the acute toxic effect of radiotherapy. A minimum of 2 weeks must have elapsed between the end of whole brain radiotherapy and study enrollment.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03529110


Contacts
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Contact: (For Sites in Asia Only) Daiichi Sankyo Contact for Clinical Trial Information +81-3-6225-1111(M-F 9-5 JST) dsclinicaltrial@daiichisankyo.co.jp

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Sponsors and Collaborators
Daiichi Sankyo, Inc.
Daiichi Sankyo Co., Ltd.
Investigators
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Study Director: Global Team Leader Daiichi Sankyo, Inc.

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Responsible Party: Daiichi Sankyo, Inc.
ClinicalTrials.gov Identifier: NCT03529110     History of Changes
Other Study ID Numbers: DS8201-A-U302
2018-000222-61 ( EudraCT Number )
183976 ( Registry Identifier: JAPIC CTI )
First Posted: May 18, 2018    Key Record Dates
Last Update Posted: May 10, 2019
Last Verified: May 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description: De-identified individual participant data (IPD) and applicable supporting clinical trial documents may be available upon request at https://vivli.org/. In cases where clinical trial data and supporting documents are provided pursuant to our company policies and procedures, Daiichi Sankyo will continue to protect the privacy of our clinical trial participants. Details on data sharing criteria and the procedure for requesting access can be found at this web address: https://vivli.org/ourmember/daiichi-sankyo/
Supporting Materials: Study Protocol
Statistical Analysis Plan (SAP)
Clinical Study Report (CSR)
Time Frame: Studies for which the medicine and indication have received European Union (EU) and United States (US), and/or Japan (JP) marketing approval on or after 01 January 2014 or by the US or EU or JP Health Authorities when regulatory submissions in all regions are not planned and after the primary study results have been accepted for publication.
Access Criteria: Formal request from qualified scientific and medical researchers on IPD and clinical study documents from clinical trials supporting products submitted and licensed in the United States, the European Union and/or Japan from 01 January 2014 and beyond for the purpose of conducting legitimate research. This must be consistent with the principle of safeguarding study participants' privacy and consistent with provision of informed consent.
URL: https://vivli.org/ourmember/daiichi-sankyo/

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No

Keywords provided by Daiichi Sankyo, Inc.:
Breast Cancer
Metastatic breast cancer
DS-8201a
DESTINY - Breast 03

Additional relevant MeSH terms:
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Breast Neoplasms
Neoplasms by Site
Neoplasms
Breast Diseases
Skin Diseases
Trastuzumab
Ado-trastuzumab emtansine
Taxane
Maytansine
Camptothecin
Immunoconjugates
Antineoplastic Agents, Immunological
Antineoplastic Agents
Antineoplastic Agents, Phytogenic
Tubulin Modulators
Antimitotic Agents
Mitosis Modulators
Molecular Mechanisms of Pharmacological Action
Topoisomerase I Inhibitors
Topoisomerase Inhibitors
Enzyme Inhibitors
Immunologic Factors
Physiological Effects of Drugs