Short-course treatment for early HER2-positive breast cancer

Short-course Trastuzumab, Pertuzumab Combined with Taxanes in the Adjuvant Treatment of Early Human Epidermal Growth Factor Receptor 2-positive Breast Cancer: an Open-label, Single-arm Study

Phase 2 Interventional Shanghai Jiao Tong University School of Medicine · NCT05891561

This study is testing a shorter treatment plan with two medications for early HER2-positive breast cancer to see if it works just as well as the usual year-long treatment but with fewer side effects.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment120 (estimated)
Ages18 Years to 75 Years
SexFemale
SponsorShanghai Jiao Tong University School of Medicine Academic / other
Drugs / interventionschemotherapy, radiation, trastuzumab, pertuzumab
Locations1 site (Shanghai, Shanghai Municipality)
Trial IDNCT05891561 on ClinicalTrials.gov

What this trial studies

This phase II, open-label, single-arm clinical study investigates the effectiveness of a short-course regimen combining trastuzumab and pertuzumab with taxanes for patients with early HER2-positive breast cancer. The goal is to determine if four courses of this dual HER2 blockade can achieve similar outcomes to the standard one-year trastuzumab monotherapy while minimizing adverse effects. Participants will receive the treatment and be monitored for their response and side effects.

Who should consider this trial

Good fit: Ideal candidates include patients with unilateral primary invasive HER2-positive breast cancer who meet specific clinical criteria.

Not a fit: Patients with bilateral or metastatic breast cancer, or those who have received prior treatment, may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could provide a more effective and less toxic treatment option for patients with early HER2-positive breast cancer.

How similar studies have performed: While similar approaches have been explored, this specific combination and short-course regimen is relatively novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Histologically diagnosed unilateral primary invasive breast cancer patient with pT1, pN0, and M0 disease
* HER2-positive, ie. immunohistochemistry \[IHC\] 3+ or IHC 2+ and fluorescence in situ hybridisation \[FISH\]-positive according to ASCO/CAP 2018 guidelines
* complete clinical pathological information
* Eastern Cooperative oncology Group \[ECOG\] 0-1
* Currently not pregnant or breast-feeding
* Fine organ function
* Have good compliance with planned treatment, understand the study process and sign a written informed consent

Exclusion Criteria:

* Bilateral or metastatic breast cancer
* Receiving neoadjuvant treatment
* Other malignancies within 5 years, except for cured cervical carcinoma in situ and non-melanoma skin cancer
* Severe systemic infections or other serious illnesses
* HIV infection, active hepatitis B or C infection
* Known allergy to or intolerance to a therapeutic drug or its excipients
* Prior history of chemotherapy, endocrine therapy, biotherapy, or radiation therapy for any reason
* Enrollment of another investigational study within 4 weeks prior to initial administration of the investigational treatment
* Receiving live vaccine within 30 days prior to initial administration of the investigational treatment
* History of mental illness or drug abuse that may affect compliance with the trial requirements
* The researchers determine that the patients were not suitable for the study

Where this trial is running

Shanghai, Shanghai Municipality

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.
Conditions Breast Cancerbreast cancerpertuzumabher2adjuvant
Last reviewed 2026-06-13 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.