Using 68Ga-FAPi-46 PET/CT to study breast cancer

Exploring the Tumor Micro-Environment with 68Ga-FAPi-46 PET/CT in Breast Cancer. a Phase II Study to Evaluate the Comparison of 68Ga-FAPi-46 and 18F-FDG Uptake in Patients with Different Breast Cancer Subtypes

Not applicable Interventional European Institute of Oncology · NCT06790264

This study is testing a new imaging method using a special agent to see if it can help women with node-positive breast cancer get better information about their tumors before starting treatment.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment92 (estimated)
Ages18 Years and up
SexFemale
SponsorEuropean Institute of Oncology Academic / other
Locations1 site (Milan, Italy)
Trial IDNCT06790264 on ClinicalTrials.gov

What this trial studies

This study evaluates the glucose metabolism and expression of the imaging agent 68Ga-FAPi-46 in women diagnosed with node-positive breast cancer. Participants will undergo a baseline 18F-FDG PET/CT scan followed by a 68Ga-FAPi-46 PET/CT within a specified timeframe. The study aims to gather data on the tumor micro-environment to improve diagnostic imaging prior to primary therapy. Eligible patients will be screened and enrolled after providing informed consent, with an expected enrollment period of 12 months.

Who should consider this trial

Good fit: Ideal candidates are women aged 18 and older with newly diagnosed, biopsy-proven invasive breast cancer and evidence of axillary node involvement.

Not a fit: Patients who are pregnant, nursing, or have an ECOG performance status of 2 or higher may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the accuracy of breast cancer imaging and improve treatment planning.

How similar studies have performed: Other studies using PET imaging in cancer diagnostics have shown promising results, indicating potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Newly diagnosed, biopsy proven breast cancer;
* Diagnosis of invasive breast cancer;
* Tumor diameter more than 2 centimeters;
* Radiological evidence of axillary nodes involvement;
* 18F-FDG PET/CT performed as baseline diagnostic procedure, during routine diagnostic work-up;
* 68Ga-FAPi-46 PET/CT performed within 4 weeks from 18F-FDG PET/CT;
* Patients suitable to primary treatment (surgery or neo-adjuvant therapy);
* 68Ga-FAPi-46 PET/CT performed within 8 weeks from primary treatment;
* Female patients;
* Age ≥18;
* Willing to sign informed consent form.

Exclusion Criteria:

* Pregnant or nursing patients;
* Unable to stay flat and cannot tolerate PET scan;
* Sample tissue from biopsy unavailable for assessing Fibroblast Activation Protein (FAP) expression;
* Eastern Cooperative Oncology Group (ECOG) performance status ≥2.

Where this trial is running

Milan, Italy

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 Cancer InvasiveNode Positive Breast Cancer68Ga-FAPi-46 PET/CT
Last reviewed 2026-06-09 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.