New ultrasound marker could help surgeons find cancer in lymph nodes
NCT ID NCT05547347
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-stage study tests a new type of marker that can be seen more clearly on ultrasound. It is placed in lymph nodes where breast cancer has spread. The goal is to see if the marker is safe, stays in place, and helps surgeons find the cancer during surgery. About 15 people with locally advanced breast cancer will take part.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 15 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2023
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Locally advanced breast cancer patients undergoing neoadjuvant systemic therapy and surgery with Dr. Piltin at Mayo Clinic.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patient 18 years or older with breast cancer and biopsy-proven malignant involvement of an axillary lymph node * Surgical management will be determined by the surgeon, who will decide if preoperative I-125 seed localization of the positive node is necessary or if they will retrieve the positive node with intraoperative ultrasound guidance. During surgery, the targeted node, its associated biopsy markers, I-125 seed if placed, and twinkling marker will be resected. The position of the marker in the lymph node or proximity to the node will be noted from the surgical and pathology documentation. * Surgery will be performed by one of the surgeons in the Division of Breast and Melanoma Surgical Oncology (Dr. Judy Boughey, Dr. Amy Degnim, Dr. Tina Hieken, Dr. Jeffrey Johnson, Dr. Mary Mrdutt, Dr. Dalliah Black, Dr. Mara Piltin) * Patients must be able to understand the study procedures and comply with them for the entire length of the study * No contraception is necessary or required Exclusion Criteria: * Current drug or alcohol use or dependence that, in the opinion of the site investigator, would interfere with adherence to study requirements * Inability or unwillingness of individual or legal guardian/representative to give written informed consent * Current or past participation within a specified timeframe in another clinical trial, as warranted by the administration of this intervention
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Mayo Clinic in Rochester
Rochester, Minnesota, 55905, United States
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