Clinical trial Recruiting at 1 site Observational

Exploring treatment strategies for HER2-low breast cancer using antibody-drug conjugates

Official title: A Multi-center, Retrospective, Study on Exploring Optimized Sequential Treatment Strategies of Antibody-Drug Conjugates (ADCs) in HER2-Low-Expressing Breast Cancer

Run by Sun Yat-sen University · NCT06877416 · Data updated 2026-11-12

This study looks at how different treatment plans using antibody-drug conjugates can help people with HER2-low breast cancer and what factors might affect their outcomes.

More Breast Neoplasms trials

Quick facts

Study typeObservational
SexAll
Enrollment700 (estimated)
SponsorSun Yat-sen University
Academic / other
Drugs / interventionstrastuzumab, sacituzumab
Locations1 site (Guangzhou, Guangdong)
StatusRecruiting
StartedJanuary 1, 2020
Main results expectedJanuary 1, 2026
Study endsJanuary 2026
Registry record updatedMarch 20, 2025
Trial IDNCT06877416 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are patients diagnosed with HER2-low breast cancer who have received sequential treatment with two or more ADCs.

Probably not a fit

Patients with other malignant tumors or incomplete clinical data may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study retrospectively analyzes clinical data from patients with HER2-low breast cancer who have been treated with sequential antibody-drug conjugates (ADCs). It focuses on evaluating patient demographics, tumor characteristics, treatment regimens, survival outcomes, and safety profiles. The study also integrates genomic data to investigate resistance mechanisms and identify potential prognostic biomarkers. By examining the efficacy of different ADC sequencing approaches, the research aims to provide insights into optimal treatment strategies for this patient population.

Why it matters

Potential benefit: If successful, this study could lead to improved treatment strategies for patients with HER2-low breast cancer, enhancing their survival outcomes.

How similar studies have gone: While there is ongoing research into ADCs for breast cancer, this specific approach focusing on HER2-low patients and sequential treatment strategies is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Diagnosed with HER2-low breast cancer, defined as immunohistochemistry (IHC) score of 1+ or IHC score of 2+ with negative in situ hybridization (FISH-negative)
* Received sequential administration of two or more ADCs
* Complete data for patient's character, laboratory and imaging test, treatment and follow-up are available.

Exclusion Criteria:

* Concomitant with other tumor components at the time of diagnosis;
* Have a history of any other malignant tumors;
* Lack of complete data

Where it's running

  • Sun yat-sen University Cancer
    Guangzhou, Guangdong, China
    Recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.