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Can Pre-Surgery hormone therapy help lobular breast cancer patients?

NCT ID NCT07483307

Disease control Sponsor: Memorial Sloan Kettering Cancer Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at whether giving hormone therapy before breast-conserving surgery helps reduce leftover cancer cells at the edges of removed tissue. It involves 176 postmenopausal women with stage 2-3 ER+/HER2- invasive lobular carcinoma. The goal is to see if this approach leads to fewer repeat surgeries and better surgical results.

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

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 176 people

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

Started

Mar 2026

Expected to finish

Mar 2030

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: * Written informed consent by participant or legally authorized representative * Postmenopausal women aged ≥50 years with biopsy-proven cT2-T3 N0-1 ILC who opt to undergo and are medically fit to undergo BCS at enrollment. * Tumors of the ER+/HER2- subtype, defined as: 1. ER+: Positive for ER staining as indicated by ≥10% immunoreactive tumor nuclei. 2. HER2-: Immunohistochemistry assay demonstrating no or faint staining in ≤10% of tumor cells (IHC 0 or 1+) or negative by dual probe in situ hybridization assay. Exclusion Criteria: * Patients with prior ipsilateral breast cancer. * Patients with advanced regional disease (cN2/cN3) or stage 4 disease. * Patients who would benefit from neoadjuvant chemotherapy, per the treating medical oncologist. * Patients who are not candidates for definitive breast surgery (inoperable or stage 4 disease). * Patients with gadolinium allergy, precluding the use of breast MRI.

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Conditions

The condition(s) this trial relates to.

breast cancer breast lobular carcinoma breast neoplasm Carcinoma, Lobular estrogen-receptor positive breast cancer Her2-receptor negative breast cancer invasive lobular breast carcinoma

As listed by the trial registrant

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

Breast cancer ER+ breast cancer HER2-negative breast cancer HER2-negative breast carcinoma Lobular breast carcinoma

How to take part

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

  1. The places running it

    7 sites. 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

  • Memorial Sloan Kettering Basking Ridge (Limited Protocol Activities)

    RECRUITING

    Basking Ridge, New Jersey, 07920, United States

  • Memorial Sloan Kettering Bergen (Limited Protocol Activities)

    RECRUITING

    Montvale, New Jersey, 07645, United States

  • Memorial Sloan Kettering Cancer Center (All Protocol Activities)

    RECRUITING

    New York, New York, 10065, United States

  • Memorial Sloan Kettering Monmouth (Limited Protocol Activities)

    RECRUITING

    Middletown, New Jersey, 07748, United States

  • Memorial Sloan Kettering Nassau (Limited Protocol Activities)

    RECRUITING

    Uniondale, New York, 11553, United States

  • Memorial Sloan Kettering Suffolk - Commack (Limited Protocol Activities)

    RECRUITING

    Commack, New York, 11725, United States

  • Memorial Sloan Kettering Westchester (Limited Protocol Activities)

    RECRUITING

    Harrison, New York, 10604, United States

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