NCT07087691 · University of California, San Diego
Efficacy of OneMark Device in Identifying Breast Cancer for Surgery and Surveillance
What this study is about
The goal of this research is to study a localization device for breast cancer called OneMark. This device will be studied in breast cancer surgery and during surveillance in patients being monitored for breast cancer.
View original scientific description
The goal of this research is to study a localization device for breast cancer called OneMark. This device will be studied in breast cancer surgery and during surveillance in patients being monitored for breast cancer. The main questions the study aims to answer are: Can surgeons visualize the OneMark device during breast cancer surgery better than a standard of care visualization device? Can radiologists visualize the OneMark device over time during breast cancer surveillance in patients with low or high density breast tissue? Participants will undergo breast cancer surgery or surveillance as required for their regular care. For patients undergoing surgery, the device will be implanted ahead of surgery. For patients in surveillance, the device will be implanted during biopsy and visibility of the device will be assessed by radiologists after 1, 3, and 6 months, and optionally after 12 months. Surgeons will complete a questionnaire at every surgery on the visibility of the OneMark device and the standard of care visualization device. Radiologists will complete a questionnaire after 1, 3, 6 months (and optionally after 12 months) after implantations in the patients in the surveillance program.
Interventions
DEVICE
OneMark device
The OneMark device system consists of a tumor marker preloaded in a delivery system, a handheld probe, and a display console. The OneMark marker is a metal clip with microparticles embedded in gelatin forming a hydrogel pellet. The pellet is implanted with a preloaded injector percutaneously in soft tissues, such as breast or lymph nodes, to mark a biopsy site or tissue intended for surgical removal. It can be used as a fiducial implant post-biopsy for future identification or monitoring of the tissue, and as an intra-operative localization mark. The microparticles of OneMark marker can be detected by Doppler ultrasound, magnetic resonance imaging (MRI), radiography, and OneMark Detector. During surgery, the OneMark marker may be removed with the target tissue. If patients do not require surgery, the OneMark marker can be left in place.
Primary outcome measures
Comparison of visibility rankings of OneMark marker and SAVI SCOUT
Time frame: At time of surgery
Visibility rankings of OneMark marker and SAVI SCOUT on a 4-point scale. Grade 0: no visibility; Grade 1: uncertain visibility; Grade 2: some visibility; Grade 3: definite visibility.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Provision of signed and dated informed consent form.
- Stated willingness to comply with all study procedures and availability for the duration of the study.
- Age ≥ 18 years.
- In good general health as evidenced by medical history.
- Deemed able to undergo general anesthesia for surgical resection.
- For individuals who are capable of menstruating: must be post-menopausal, defined as no menses in the 12 months before enrollment or age \> 60 years. No additional requirements - besides the age requirement in inclusion criterion # 3 - are needed for individuals who are not capable of menstruating. For surgery cohort only:
- Male and female patients with stage T1/T2 breast cancer visible by ultrasound. For surveillance cohort only:
- Male and female patients with abnormal mammogram Breast Imaging Reporting and Data System (BI-RADS) category 4 or 5.
- Ultrasound visible unifocal breast tumor \< 5 cm in diameter.
- Low density tissue by mammogram either category A (fatty replaced) or category B (scattered densities); or high density tissue by mammogram either category C (heterogeneously dense) or category D (extremely dense).
Exclusion criteria
- Pregnancy or lactation.
- Known allergic reactions to components of OneMark System or SAVI SCOUT.
- Feverish illness within 7 days of placement of the device.
- Previous treatment with another investigational drug or other intervention within 1 month of enrollment.
- Previous use of neoadjuvant chemotherapy within 6 months of enrollment.
Where
- La Jolla, California
Collaborators
View Point Medical
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Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Feb 3, 2026 · Source of record for eligibility and locations