Clinical trial No longer in our active list Observational Ages 18 and up

Evaluating tucatinib for advanced HER2-positive breast cancer after prior treatments

Official title: Tucatinib in Patients With Locally Advanced or Metastatic HER2-positive Breast Cancer Who Received at Least Two Prior Anti-HER2 Treatment Regimens: a Multicenter, International, Prospective, Non-interventional Study in Germany and Austria (TRACE)

Run by iOMEDICO AG · NCT05253911 · Data updated 2026-05-14

This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.

This study is testing if a combination of tucatinib, trastuzumab, and capecitabine can help adults with advanced HER2-positive breast cancer feel better and improve their quality of life after they've already tried other treatments.

More HER2-positive Breast Cancer trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment300 (estimated)
SponsoriOMEDICO AG
Industry-sponsored
Drugs / interventionstrastuzumab, tucatinib, neratinib
Locations2 sites (Vienna and 1 other locations)
Trial IDNCT05253911 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 years or older with histologically confirmed HER2-positive breast cancer who have received at least two prior anti-HER2 treatment regimens.

Probably not a fit

Patients who have not been treated with at least two prior anti-HER2 regimens or those with non-HER2-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 observational study aims to gather real-world data on the effectiveness and safety of tucatinib combined with trastuzumab and capecitabine in adult patients with locally advanced or metastatic HER2-positive breast cancer who have previously undergone at least two anti-HER2 treatment regimens. Unlike previous trials, this study will include a broader patient population, including older individuals and those with more comorbidities. The study will focus on health-related quality of life and will utilize validated questionnaires to assess patient outcomes. It will also evaluate the treatment's effectiveness in various subgroups based on prior therapies.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the effectiveness of tucatinib in a real-world setting, potentially improving treatment options for patients with advanced HER2-positive breast cancer.

How similar studies have gone: While this approach is based on existing treatments, it aims to fill a gap in real-world data for a specific patient population, making it a novel contribution to the field.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Aged 18 years or older.
* Histologically confirmed HER2+ breast cancer with HER2 positivity defined as a 3+ score by immunohistochemistry (IHC) or a positive result by in situ hybridization (ISH), optionally combined with a IHC2+ score.
* Diagnosis of locally advanced or metastatic HER2+ breast cancer, including patients with brain metastases.
* Prior treatment with at least two prior anti-HER2-based regimens.
* Decision for treatment with tucatinib in combination with trastuzumab and capecitabine according to current SmPC of tucatinib either in

  1st/2nd palliative treatment line (Cohort 1) or 3rd/4th palliative treatment line (Cohort 2).
* Progression after or intolerance of last systemic anti-HER2-based therapy.
* Indication for treatment with tucatinib as assessed by the treating physician.
* Signed written informed consent (only if patient is alive at time of inclusion, not applicable for retrospective inclusion of deceased patients).
* Knowledge of German language.
* Other criteria according to current SmPC of tucatinib

Exclusion Criteria:

* Contraindications according to SmPC of tucatinib
* Participation in an interventional clinical trial within 30 days prior to enrolment or simultaneous participation in an interventional clinical trial.
* Treatment with tucatinib/trastuzumab/capecitabine (=study treatment) in 5th or higher palliative therapy line.
* Onset of tucatinib treatment later than 22 days after start of therapy line (in case tucatinib administration is started later than trastuzumab and/or capecitabine for any reason)

Where it's running

  • Universitätsklinikum Essen, Innere Klinik (Tumorforschung)
    Essen, Northrhine-Westphalia, Germany
    Recruiting
  • Medizinische Universität Wien, Innere Medizin I, Hämatologie und Onkologie
    Vienna, Austria
    Not yet 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.