Using Pyrotinib for HER2-positive Breast Cancer After Trastuzumab Treatment

Pyrotinib After Trastuzumab-based Adjuvant Therapy in Patients With HER2-positive Breast Cancer: an Open-label, Multi-center Trial

PHASE2 · Taizhou Hospital · NCT05880927

This study is testing whether a new drug called pyrotinib can help high-risk HER2-positive breast cancer patients feel better after finishing their previous treatment with trastuzumab.

Quick facts

PhasePHASE2
Study typeInterventional
Enrollment150 (estimated)
Ages18 Years to 75 Years
SexFemale
SponsorTaizhou Hospital (other)
Drugs / interventionstrastuzumab, pyrotinib
Locations1 site (Taizhou, Zhejiang)
Trial IDNCT05880927 on ClinicalTrials.gov

What this trial studies

This multicenter, open-label phase II trial evaluates the effectiveness of pyrotinib as extended adjuvant therapy in high-risk HER2-positive breast cancer patients who have completed trastuzumab-based treatment. Participants will receive pyrotinib at a dose of 400mg per day for either one year or six months, depending on their risk factors. The study aims to determine the impact of this treatment on disease outcomes in patients who did not achieve a complete pathological response or have other high-risk features. The trial is conducted across 23 centers in China, focusing on a specific patient population with defined eligibility criteria.

Who should consider this trial

Good fit: Ideal candidates are women aged 18-75 with HER2-positive breast cancer who have completed one year of trastuzumab-based therapy and are classified as high risk.

Not a fit: Patients with serious heart conditions, those unable to take the medication, or those with a history of immunodeficiency may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could improve outcomes for high-risk HER2-positive breast cancer patients after initial therapy.

How similar studies have performed: Other studies have explored the use of targeted therapies in HER2-positive breast cancer, indicating potential for success, but this specific approach with pyrotinib is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Women aged 18-75 years old
2. HER2 positive breast cancer
3. ECOG PS 0-1
4. Known hormone receptor status
5. Completed 1 year of trastuzumab-based adjuvant therapy within 6 months
6. Patients at high risk

Exclusion Criteria:

1. Serious heart disease or discomfort
2. Inability to swallow, intestinal obstruction, or the presence of other factors that interfere with drug administration and absorption
3. Known allergic history of drug components of this regimen
4. A history of immunodeficiency, including HIV positive, or other acquired, congenital immunodeficiency diseases, or a history of organ transplantation
5. Pregnant and lactating female patients

Where this trial is running

Taizhou, Zhejiang

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Breast Cancer

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.