Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 18 to 89

68Ga DOTA-5G PET/CT imaging for metastatic invasive lobular breast cancer

Official title: [68Ga]Ga DOTA-5G as a Diagnostic Imaging Agent for Metastatic/Advanced Invasive Lobular Breast Cancer (LBC)

Run by University of California, Davis · NCT07020806 · Data updated 2026-11-12

This Phase I trial will test whether a new PET tracer called 68Ga DOTA-5G can safely find cancer sites and pick up more disease than standard 18F-FDG PET/CT in adults with metastatic or advanced invasive lobular breast cancer.

More Lobular Breast Carcinoma trials

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years to 89 Years
SexAll
Enrollment30 (estimated)
SponsorUniversity of California, Davis
Academic / other
Locations1 site (Sacramento, California)
StatusRecruiting
StartedNovember 18, 2025
Main results expectedJune 2027
Study endsJune 2027
Registry record updatedSeptember 14, 2026
Trial IDNCT07020806 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (age ≥18) with confirmed metastatic or advanced invasive lobular breast cancer, measurable disease, available archival tumor tissue, ECOG performance status 0–2, and adequate blood and kidney function are ideal candidates.

Probably not a fit

Patients with early-stage disease, concurrent cancers that would confound imaging, pregnant or lactating women, or those who cannot undergo PET/CT (for example due to weight limits) are unlikely to benefit from this imaging approach.

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

What this trial studies

This is a prospective Phase I investigator-initiated imaging study enrolling 30 patients with metastatic or advanced invasive lobular breast cancer over 24 months. Participants will undergo PET/CT imaging with 68Ga DOTA-5G, with comparisons made to standard 18F-FDG PET/CT to compare lesion detection. The study will monitor safety and tolerability of the tracer and record imaging sensitivity against RECIST or PERCIST-measurable disease. Eligibility requires measurable metastatic disease, available archival tumor tissue, ECOG ≤2, and basic hematologic and renal function criteria.

Why it matters

Potential benefit: If successful, the tracer could improve detection of lobular breast cancer metastases and help clinicians make more informed treatment decisions.

How similar studies have gone: While other 68Ga-labeled tracers have shown success in imaging different cancers, using 68Ga DOTA-5G specifically for invasive lobular breast cancer is a novel, early-phase application.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* (Ability to understand and willingness to sign a written informed consent document.
* Men and women age ≥ 18 yrs
* Confirmed presence of metastatic/advanced invasive lobular breast cancer and measurable disease per RECIST (version 1.1) or PERCIST
* Available archival tumor tissue
* Eastern Cooperative Oncology Group Performance Status ≤ 2
* Hematologic parameters defined as: Absolute neutrophil count (ANC) ≥ 1000 cells/mm3,Platelet count ≥ 100,000/mm3, Hemoglobin ≥ 8 g/dL.
* Blood chemistry levels defined as: AST, ALT, alkaline phosphatase ≤ 5 times upper limit of normal (ULN), Total bilirubin ≤ 2 times ULN, eGFR \>60 mL/min/1.73m\*2
* Anticipated life expectancy ≥ 3 months
* Able to remain motionless for up to 30-60 minutes per scan.

Exclusion Criteria:

* Pregnant and lactating women
* Prisoners
* Concurrent malignancy of a different histology that could confound imaging interpretation.
* Patients who cannot undergo PET/CT scanning because of weight limits(\>350lbs)

Where it's running

  • University of California Davis
    Sacramento, California, United States
    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.