A Study to Compare Eribulin Mesylate + Pertuzumab + Trastuzumab With Paclitaxel or Docetaxel + Pertuzumab + Trastuzumab

September 24, 2025 updated by: Japan Breast Cancer Research Group

A Phase III Clinical Study to Compare the Combination Therapy of Eribulin Mesylate + Pertuzumab + Trastuzumab With Paclitaxel or Docetaxel + Pertuzumab + Trastuzumab (EMERALD)

To verify that combination therapy with trastuzumab + pertuzumab + eribulin brings similar PFS and better QOL compared to trastuzumab + pertuzumab + taxane in advanced/recurrent HER2-positive breast cancer patients who have no medical history of chemotherapy except ado-trastuzumab emtansine

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
446

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.
  • Name: Toshinari Tamashita, MD, PhD
  • Phone Number: +81-45-520-2222
  • Email: tyamashita@kcch.jp

Study Locations

  • Japan
    • Kanagawa
      • Yokohama, Kanagawa, Japan, 241-8515
        • Kanagawa Cancer Center
    • Osaka
      • Osaka, Osaka, Japan, 540-0006
        • National Hospital Organization Osaka National Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

20 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Patients with breast cancer that is confirmed histologically or cytologically
  2. Patients who are confirmed to be HER2 positive for the primary or a metastatic lesion at a participating medical institution
  3. Patients with no medical history of treatment for advanced/recurrent cancer using a regimen of drugs including chemotherapeutics
  4. >=6 months have passed since perioperative treatment with anticancer agents
  5. Presence of a measurable lesion not required
  6. Female aged 20-70 years old at the time of consent acquisition
  7. Baseline left ventricular ejection fraction (LVEF) measured by ECHO or MUGA of >=50%
  8. Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0-1
  9. Patients who have maintained major organ functions, meeting all of the following criteria on a test within 28 days before enrollment. If there are multiple test results during this period, that obtained immediately before enrollment should be adopted.

(1) Neutrophil count: >=1,500/mm3 (2) Platelet count: >=100,000/mm 3 (3) Hemoglobin: >=9.0 g/dL (4) Total bilirubin: <=1.5 mg/dL (5) AST (GOT), ALT (GPT): <=2.5 times the ULN (<=5 times in those with liver metastasis) (6) Serum creatinine: <=1.5 mg/dL 10) Patients with a life expectancy of at least 6 months 11) Patient who submits written consent herself after receiving sufficient explanation about this study 12) Patients who can undergo QOL investigation

Exclusion Criteria:

  1. Patients planning to undergo radical surgery if they respond to a treatment
  2. Patients who have non-hematological adverse events assessed as Grade >=3 in the Common Terminology Criteria for Adverse Events ver. 4.0 in the Japanese JCOG version (CTCAE v4.0-JCOG) at the time of enrollment
  3. Patients who have symptomatic metastases to the central nervous system or whose symptoms are hard to control
  4. Patients who have active double cancer
  5. Patients who have poorly controlled hypertension, or unstable angina
  6. Patients who have a past history of congestive heart failure assessed as Class ll or higher in the New York Heart Association (NYHA) classification, or clinically significant arrhythmia requiring treatment
  7. Patients with a past history of myocardial infarction within 6 months before enrollment
  8. Patients who are expected to undergo major surgical treatment or who had severe injury within 28 days before enrollment, or who require major surgical treatment during the study treatment period
  9. Patients with interstitial pneumonia which is symptomatic or requires treatment
  10. Pregnant women, those with a positive pregnancy test, and lactating women
  11. Patients with active systemic infection (including HCV and HBV), or who are found to be HIV-positive
  12. Patients with hypersensitivity against pertuzumab and trastuzumab
  13. Patients whom the investigator consider unable or unwilling to follow the protocol requirements

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Arm A

Trastuzumab + pertuzumab + Taxane*

*Taxane is chosen from the following; Docetaxel or Paclitaxel
Drug: Pertuzumab
Every 3 weeks
Other Names:
  • Perjeta
Drug: Trastuzumab
Every 3 weeks
Other Names:
  • Herceptin
Drug: Docetaxel
Every 3 weeks
Other Names:
  • Taxotere
Drug: Paclitaxel
Every week
Other Names:
  • Taxol
Experimental: Arm B
Trastuzumab+ Pertuzumab + Eribulin
Drug: Pertuzumab
Every 3 weeks
Other Names:
  • Perjeta
Drug: Trastuzumab
Every 3 weeks
Other Names:
  • Herceptin
Drug: Eribulin
Administered for 2 weeks and is then stopped to be administered for 1 week
Other Names:
  • Halaven

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
PFS
Time Frame: 5.75 years
Progression-free survival
5.75 years

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
RR
Time Frame: 5.75 years
Response rate
5.75 years
DR
Time Frame: 5.75 years
Duration of response
5.75 years
OS
Time Frame: 6.25 years
Overall survival
6.25 years
PRO
Time Frame: 5.75 years
Patient-reported outcomes(Numbness & tingling)
5.75 years
Biomaker
Time Frame: 5.75 years
DNA mutation in the ctDNA and tumor tissue such as HER2,HER3, and PIK3CA
5.75 years
nMFS
Time Frame: 5.75 years
new Metastases free survival
5.75 years
TTF of the subsequent treatment
Time Frame: 5.75 years
Treatment duration of the following treatment
5.75 years
Safety
Time Frame: 5.75 years
  1. Incidence of infusion reactions and left ventricular dysfunction
  2. LVEF measurements during the study period
  3. Incidence and severity of adverse events and serious adverse events
  4. Abnormal laboratory test values
5.75 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Japan Breast Cancer Research Group

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Eisai Co., Ltd.

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Toshinari Tamashita, MD, PhD, Kanagawa Cancer Center
  • Principal Investigator: Norikazu Masuda, MD, PhD, NHO Osaka National Hospital
  • Principal Investigator: Shigehira Saji, MD, PhD, Fukushima Medical University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 28, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 1, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 24, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 29, 2017

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 29, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 24, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • JBCRG-M06

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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