Pyrotinib Combined With Trastuzumab and Pertuzumab for Maintenance Therapy in HER2-Positive Advanced Breast Cancer

March 9, 2026 updated by: Peking University Cancer Hospital & Institute

Efficacy and Safety of Pyrotinib Combined With Trastuzumab and Pertuzumab for Maintenance Therapy in HER2-Positive Advanced Breast Cancer：A Prospective, Single-Arm, Observational, Real-World Study

This is a Prospective, Single-Arm, Observational, Real-World Study. The purpose of this study is to evaluate the safety and efficacy of pyrotinib combined with trastuzumab and pertuzumab for maintenance therapy in HER2-positive advanced breast cancer in the real-world setting.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

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.

Detailed Description

The current standard of care for first-line treatment of HER2+ advanced breast cancer consists of induction chemotherapy with a taxane (T) in combination with dual anti-HER2 monoclonal antibody, trastuzumab (H) and pertuzumab (P), followed by maintenance therapy with HP. However, most patients eventually experience disease progression on this regimen and not all will be able to receive a second-line treatment. The aim of this study was to evaluate the efficacy and safety of pyrotinib combined with HP as maintenance therapy for HER2-positive advanced breast cancer patients. The results are expected to provide real-world evidence for optimizing first-line maintenance treatment strategies in patients with HER2+ advanced breast cancer who had completed induction therapy with THP.

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.
Observational

Enrollment (Estimated)

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.
42

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.

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

The study population consists of adult patients (age ≥18) with HER2-positive advanced breast cancer who have completed 4-8 cycles of first-line induction therapy with trastuzumab, pertuzumab, and chemotherapy without disease progression. Participants will be recruited from the Department of Breast Oncology at Peking University Cancer Hospital and will be enrolled consecutively after meeting all eligibility criteria and providing informed consent.

Description

Inclusion Criteria:

  1. Age ≥ 18 years, male or female.
  2. Histologically or cytologically confirmed HER2-positive advanced breast cancer (IHC 3+, or IHC 2+ with ISH amplification), with known HR status.
  3. Have unresectable locally advanced or metastatic disease. If recurrent (after [neo]adjuvant therapy), must be at least 6 month treatment free from any trastuzumab and pertuzumab received in the early breast cancer setting for advanced HER2+ disease.
  4. Have received 4-8 cycles of pre-study induction therapy including only trastuzumab, pertuzumab, and taxane as first-line of therapy for the treatment of advanced breast cancer prior to study enrollment. Participants are eligible provided they are without evidence of disease progression following completion of induction therapy.
  5. CNS Inclusion - Based on screening contrast-enhanced brain magnetic resonance imaging (MRI), participants may have any of the following: No evidence of brain metastases. Untreated brain metastases which are asymptomatic not needing immediate local treatment and, if identified on prior brain imaging, without evidence of progression since starting first-line induction therapy with trastuzumab, pertuzumab, and taxane
  6. Eastern Cooperative Oncology Group (ECOG) Performance Status of 0-2
  7. Have planned to receive maintenance anti-tumor therapy with pyrotinib in combination with HP
  8. Negative serum pregnancy test; women of childbearing potential must use a highly effective contraceptive method from study initiation until at least 6 months after the last dose of study medication.
  9. Voluntary participation with written informed consent obtained prior to any study-related procedures.

Exclusion Criteria:

  1. Other malignancy diagnosed within 5 years prior to enrollment.
  2. Prior treatment with any tyrosine kinase inhibitor targeting HER2 and/or epidermal growth factor receptor (EGFR) including pyrotinib, lapatinib, tucatinib, neratinib, and afatinib.
  3. Patients who are difficult or unable to be followed-up.
  4. Other reasons that, in the investigator's judgment, make the patient unsuitable for participation in this study.

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

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
Progression-free survival (PFS)
Time Frame: Up to approximately 3 years
The time from the patient begins treatment to the investigator assessment of disease progression according to RECIST v1.1 or death from any cause
Up to approximately 3 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
Incidence of adverse events
Time Frame: Start of treatment until 3-year follow-up
Start of treatment until 3-year follow-up
Severity of adverse events
Time Frame: Start of treatment until 3-year follow-up
Start of treatment until 3-year follow-up
Incidence of serious adverse events
Time Frame: Start of treatment until 3-year follow-up
Start of treatment until 3-year follow-up
Severity of serious adverse events
Time Frame: Start of treatment until 3-year follow-up
Start of treatment until 3-year follow-up
Overall survival (OS)
Time Frame: Up to approximately 5 years
The time from the date the patient begins treatment to death from any cause.
Up to approximately 5 years
Central nervous system (CNS) PFS
Time Frame: Up to approximately 3 years
The time from the patient begins treatment to investigator assessed disease progression in brain (RECIST v1.1), or death from any cause
Up to approximately 3 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.
Peking University Cancer Hospital & Institute

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 (Estimated)

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.
March 31, 2026

Primary Completion (Estimated)

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.
March 31, 2029

Study Completion (Estimated)

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.
September 30, 2029

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).
March 9, 2026

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.
March 9, 2026

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.
March 13, 2026

Study Record Updates

Last Update Posted (Actual)

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.
March 13, 2026

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.
March 9, 2026

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.
March 1, 2026

More Information

Terms related to this study

Keywords

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.
  • Pyro-HP Maintain

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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