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Magnetic seeds could guide surgeons to breast tumors without radioactive tracers

NCT ID NCT05142787

Diagnosis Sponsor: Endomagnetics Ltd. Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 16, 2026 · Last updated Sep 17, 2026 · Updated 1 time

Summary

Researchers are testing a system called Magseed Pro and Sentimag Gen3 to help surgeons find breast tumors and suspicious lymph nodes during surgery. The study enrolls 224 adults with breast cancer who need these areas marked and removed. Doctors place a small magnetic marker into the tumor or lymph node, then use a handheld device to locate it in the operating room. The main goal is to see how often the marker and the target tissue are successfully removed together.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Magseed Pro marker and Sentimag Gen3 localization system
What this could lead to
If it works, this could give surgeons a reliable way to find breast tumors and lymph nodes during surgery without using radioactive tracers or wires.
What could go wrong
The study is non-randomized and open-label, so results may not apply to all patients or hospitals. The marker may not always be retrieved with the target tissue, and the study does not compare the system directly against other localization methods.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 224 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2023

Expected to finish

Jun 2028

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Participant is willing and able to give informed consent for participation in the study * Participant is aged 18 years or older at the time of consent. * Patients requiring breast lesion/axillary node marking and excision Exclusion Criteria:• Pregnant or nursing subjects and those who plan pregnancy during the clinical investigation follow-up period. A pregnancy test is required for all women of childbearing potential within 7 days before enrolment. * Presence of other anatomic or comorbid conditions, or other medical, social, or psychological conditions that, in the investigator's opinion, could limit the subject's ability to participate in the clinical trial or to comply with follow up requirements, or impact the scientific soundness of the clinical trial results * Known hypersensitivity to Nitinol * Subject has current active infection at the implantation site in the breast (per investigator discretion)

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Conditions

The condition(s) this trial relates to.

breast cancer breast neoplasm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Breast cancer

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    6 sites in 2 countries. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • AGAPLESION Markus Frankfurter Diakonie Kliniken gGmbH

    RECRUITING

    Frankfurt, Germany

  • Guy's Hospital

    RECRUITING

    London, United Kingdom

  • Marienhospital Bottrop GmbH

    RECRUITING

    Bottrop, Germany

  • Royal Marsden Hospital

    RECRUITING

    London, United Kingdom

  • Technical University Munich

    NOT_YET_RECRUITING

    Munich, Germany

  • University Hospital South Manchester

    RECRUITING

    Manchester, United Kingdom

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