Clinical trial Recruiting at 1 site Interventional Women only

Understanding how trastuzumab deruxtecan works in HER2 positive breast cancer

Official title: Spatial Transcriptomic Approach for Revealing the Resistance Mechanism of Trastuzumab Deruxtexan in HER2 Positive Breast Cancer Patients.

Run by Samsung Medical Center · NCT06330012 · Data updated 2026-11-12

This study is trying to understand why some people with HER2 positive breast cancer don’t respond to the treatment trastuzumab deruxtecan, to help improve future treatment options.

More HER2-positive Breast Cancer trials

Quick facts

Study typeInterventional
SexWomen only
Enrollment50 (estimated)
SponsorSamsung Medical Center
Academic / other
Drugs / interventionstrastuzumab
Locations1 site (Seoul)
StatusRecruiting
StartedMarch 18, 2024
Main results expectedJanuary 15, 2025
Study endsDecember 31, 2027
Registry record updatedMarch 26, 2024
Trial IDNCT06330012 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are patients with stage IV HER2 positive breast cancer who have been treated with trastuzumab deruxtecan and have available FFPE samples.

Probably not a fit

Patients with triple-negative breast cancer or hormone receptor positive breast cancer 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 study utilizes a spatial transcriptomic approach to investigate the mechanisms of resistance to trastuzumab deruxtecan in patients with HER2 positive breast cancer. By analyzing formalin-fixed paraffin-embedded (FFPE) samples from patients who have undergone treatment, the study aims to uncover the biological factors that contribute to treatment resistance. The findings could provide insights into improving therapeutic strategies for this patient population.

Why it matters

Potential benefit: If successful, this study could lead to enhanced treatment options for patients with HER2 positive breast cancer by identifying resistance mechanisms.

How similar studies have gone: While the specific approach of this study may be novel, similar studies investigating resistance mechanisms in cancer treatments have shown promise in the past.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* HER2 positive breast cancer
* Stage IV disease
* Treated with T-Dxd
* Available FFPE samples

Exclusion Criteria:

* TNBC breast cancer
* Hormone receptor positive breast cancer
* Non-available FFPE samples
* Treated except T-Dxd

Where it's running

  • Ji-Yeon Kim
    Seoul, South Korea
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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.