Could freezing tumors replace surgery for some breast cancers?

NCT ID NCT05505643

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares a freezing technique called cryoablation to standard lumpectomy surgery in people with low-risk, early-stage breast cancer. The goal is to see if freezing the tumor offers similar disease control with fewer complications and better quality of life. About 120 participants will be enrolled, starting with a safety check of the freezing procedure.

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 120 people

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

Started

Apr 2024

Expected to finish

Apr 2033

An estimate. End dates often move.

Lead sponsor

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.

Ages

50 years and older

Sex

Female participants only

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: * Diagnosis of invasive ductal carcinoma of the breast (ER , Her-2 negative) that is grade 1 or 2 with intraductal component \<25%. Must be T1N0M0 (2 cm or less). * If DCIS is present in the biopsy specimen it should be \<25% of the tumor and should be contiguous with the IDC. (i.e. DCIS should not be a separate tumor from the IDC). * Oncotyping will be performed on T1b+Allred\<6/8 and T1c tumors. Oncotype score in this subset of patients must be \<26 to be included in the trial. * At least 50 years of age. * Negative ipsilateral axillary assessment as determined either by (1) negative axillary ultrasound (2) negative sentinel lymph node biopsy or (3) negative percutaneous axillary node biopsy with no further clinical or imaging concern for nodal metastatic disease. * Able to understand and willing to sign an IRB-approved written informed consent document. Exclusion Criteria: * Indication for neoadjuvant chemotherapy. * Prior history of breast cancer. * Breast augmentation. * Allergy to local anesthetics. * Pregnant or lactating. Women of childbearing potential must have a negative pregnancy test within 14 days of study entry. * Tumoral involvement of skin or chest wall.

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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.

  1. The places running it

    1 site. 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.

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  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

  • Washington University School of Medicine

    RECRUITING

    St Louis, Missouri, 63110, United States

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