Positron Emission Mammography and Liquid Biopsy in Women With High-risk Breast Screenings

NCT06268405 | Recruiting

• 1 other identifier: 22-5806
• Study Type: interventional
• Target: 100
• Locations: 1 country
• Sites: 1

Brief Summary

The goal of this research study is to evaluate the performance of two experimental tests, namely Liquid Biopsy and Positron Emission Mammography (PEM) in women at high risk of breast cancer. The plan for this study is to assess whether findings from the combination or each individual test can assist radiologists in visualizing and characterizing beast abnormalities. Liquid Biopsy is a blood test that can detect early tumours in patients with malignancies, while PEM is an imaging tool equipped with a high-resolution camera that uses a low dose of injected positron emitting isotope to locate breast tumours. Participation in this study entails a blood draw for Liquid Biopsy test and a PEM imaging exam before undergoing a magnetic resonance imaging (MRI) - guided biopsy for a suspicious breast lesion. If PEM and/or Liquid Biopsy provide accurate information to assist radiologists in visualizing and characterizing breast abnormalities, this method may serve as the first step towards establishing these genomic and new imaging technologies as new diagnostic modalities and ultimately reduce the unnecessary biopsies and anxiety in high-risk populations.

Conditions

Breast Cancer

Keywords

Positron Emission Mammography (PEM); Liquid Biopsy

Outcome Measures

Primary Outcomes (1)

• Evaluating the performance of PEM and Liquid Biopsy in visualizing and characterizing breast abnormalities

  The performance of PEM and/or Liquid Biopsy, including percent sensitivity, specificity, positive and negative predictive values, in visualization and characterization of suspicious breast abnormalities will be evaluated and compared to magnetic resonance imaging (MRI), and digital mammography.

  3 years

Study Arms (1)

Liquid Biopsy and Positron Emission Mammography (PEM)

EXPERIMENTAL

To perform the Liquid Biopsy assays, a baseline blood sample will be collected prior to the MRI-guided biopsy, and a follow-up blood and a tissue sample (if available) may be requested post-surgery If malignancy is confirmed by the standard of care histopathology results. To perform the Positron Emission Mammography (PEM), participants will be injected with 74 megabecquerel (MBq) of commercially distributed 2-\[fluorine-18\]-fluoro-2-deoxy-D-glucose (F-18 FDG). Following a delay of one hour for F-18 FDG uptake, the study participants will undergo a bilateral 4-view combination PEM scan.

Genetic: Liquid Biopsy; Device: Positron Emission Mammography (PEM)

Interventions

Liquid Biopsy GENETIC

Detects cell-free DNA (cfDNA) circulating in the blood by whole-genome sequencing (WGS). It also detects cfDNA containing epigenetic marks by cell-free methylated DNA immunoprecipitation and high throughput sequencing assays and may determine the concordance of genomic alterations between tumour tissue (if available) and matched plasma samples by WGS.

Liquid Biopsy and Positron Emission Mammography (PEM)

Positron Emission Mammography (PEM) DEVICE

PEM produces high-sensitivity images of breasts with low levels of F-18 FDG.

Liquid Biopsy and Positron Emission Mammography (PEM)

Eligibility Criteria

• Age: 18 Years+
• Sex: female
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Individuals who are older than 18 years of age
• Individuals who are planned to undergo an MRI-guided biopsy based on high- risk screening imaging detected lesions
• Individuals with the ability to understand and the willingness to sign a written informed consent document

You may not qualify if:

• High-risk Individuals with screening-imaging studies without suspicious lesions detected by the standard of care mammogram and/or MRI
• Individuals who are pregnant or who think they may be pregnant
• Individuals who are breast-feeding
• Individuals with known allergies to F-18 FDG

Sponsors & Collaborators

• University Health Network, Toronto: lead
• Radialis Inc.: collaborator
• The Princess Margaret Cancer Foundation: collaborator

Study Sites (1)

University Health Network

Toronto, Ontario, M5G 2M9, Canada

RECRUITING

MeSH Terms

Conditions

Breast Neoplasms

Interventions

Liquid Biopsy

Condition Hierarchy (Ancestors)

Neoplasms by Site; Neoplasms; Breast Diseases; Skin Diseases; Skin and Connective Tissue Diseases

Intervention Hierarchy (Ancestors)

Biopsy; Cytodiagnosis; Cytological Techniques; Clinical Laboratory Techniques; Diagnostic Techniques and Procedures; Diagnosis; Specimen Handling; Investigative Techniques

Study Officials

• Vivianne Freitas, MD

  University Health Network, Toronto

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Samira Taeb, MSc

CONTACT

416-946-4501; samira.taeb2@uhn.ca

Vivianne Freitas, MD

CONTACT

416-946-2000; vivianne.freitas@uhn.ca

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: SCREENING
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: February 12, 2024
• First Posted: February 20, 2024
• Study Start: September 21, 2023
• Primary Completion (Estimated): July 31, 2026
• Study Completion (Estimated): July 31, 2027
• Last Updated: April 29, 2026

Record last verified: 2026-04

Locations

CA (1)