A Study on Adding Precisely Targeted Radiation Therapy (Stereotactic Body Radiation Therapy) to the Usual Treatment Approach (Drug Therapy) in People With Breast Cancer

NCT ID: NCT05534438

Last Updated: 2025-10-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-09-06

Study Completion Date

2026-09-06

Brief Summary

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The purpose of this study is to see if using Stereotactic Body Radiation Therapy/SBRT to treat a single metastatic site where cancer has worsened may be an effective treatment for people with oligometastatic breast cancer. Participants will stay on their usual drug therapy while they receive SBRT. This combination of SBRT to a single metastatic site and usual drug therapy may prevent participants' cancer from worsening in other metastatic sites or spreading.

Detailed Description

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Conditions

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Oligometastatic Breast Carcinoma Breast Cancer Metastatic Breast Cancer Metastatic Breast Carcinoma ER+ Breast Cancer HER2+ Breast Cancer

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Participants with oligometastatic breast cancer

Participants with oligometastatic breast cancer with isolated progression after sustained (\>=6 month) response to systemic therapy. Participants will receive image guided, SBRT to the progressive lesion identified on imaging. Participants will be maintained on their existing line of systemic therapy. Systemic therapy will be held during days of radiation and resume following completion of radiation.

Group Type EXPERIMENTAL

Stereotactic body radiotherapy

Intervention Type RADIATION

SBRT will be initiated as soon as possible, at not beyond 8 weeks of baseline measurements. Recommended dosing is per department standards for oligometastatic disease (ie, 10 Gy x 3 or 7-8 Gy x 5 fractions daily, excluding weekends and departmental holidays)

Interventions

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Stereotactic body radiotherapy

SBRT will be initiated as soon as possible, at not beyond 8 weeks of baseline measurements. Recommended dosing is per department standards for oligometastatic disease (ie, 10 Gy x 3 or 7-8 Gy x 5 fractions daily, excluding weekends and departmental holidays)

Intervention Type RADIATION

Other Intervention Names

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SBRT

Eligibility Criteria

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Inclusion Criteria

* Age 18 or older
* Willing and able to provide informed consent
* Metastatic breast cancer, biopsy proven

* ER+/HER2-, defined as \>5% ER+ staining
* HER2+ (regardless of ER status), including HER2-low and high expressors
* History of at least 6 months, sustained response to systemic therapy (clinically or radiographically defined as complete or stable response without progression)
* Isolated site of disease progression on FDG PET scan
* Consented to 12-245
* ECOG performance status 0-1

Exclusion Criteria

* Pregnancy
* Serious medical comorbidity precluding radiation, including connective tissue disorders
* Intracranial disease (including previous intracranial involvement)
* Previous radiotherapy to the intended treatment site that precludes developing a treatment plan that respects normal tissue tolerances.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Memorial Sloan Kettering Cancer Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Amy Xu, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Memorial Sloan Kettering Cancer Center

Locations

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Memorial Sloan Kettering Basking Ridge (Limited Protocol Activities)

Basking Ridge, New Jersey, United States

Site Status RECRUITING

Memorial Sloan Kettering Monmouth (Limited Protocol Activities)

Middletown, New Jersey, United States

Site Status RECRUITING

Memorial Sloan Kettering Bergen (Limited Protocol Activities)

Montvale, New Jersey, United States

Site Status RECRUITING

Memorial Sloan Kettering Commack (Limited Protocol Activities)

Commack, New York, United States

Site Status RECRUITING

Memorial Sloan Kettering Westchester (Limited Protocol Activities)

Harrison, New York, United States

Site Status RECRUITING

Memorial Sloan Kettering Cancer Center (All Protocol Activities)

New York, New York, United States

Site Status RECRUITING

Memorial Sloan Kettering Nassau (Limited Protocol Activities)

Uniondale, New York, United States

Site Status RECRUITING

Lehigh Valley Health Network (Data Collection Only)

Allentown, Pennsylvania, United States

Site Status NOT_YET_RECRUITING

Countries

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United States

Central Contacts

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Amy Xu, MD, PhD

Role: CONTACT

646-888-6863

Atif Khan, MD

Role: CONTACT

848-225-6334

Facility Contacts

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Amy Xu, MD, PhD

Role: primary

646-888-6863

Amy Xu, MD, PhD

Role: primary

646-888-6863

Amy Xu, MD, PhD

Role: primary

646-888-6863

Amy Xu, MD, PhD

Role: primary

646-888-6863

Amy Xu, MD, PhD

Role: primary

646-888-6863

Amy Xu, MD, PhD

Role: primary

646-888-6863

Amy Xu, MD, PhD

Role: primary

646-888-6863

Alyson McIntosh, MD

Role: primary

610-402-0700

Related Links

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http://www.mskcc.org

Memorial Sloan Kettering Cancer Center

Other Identifiers

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22-259

Identifier Type: -

Identifier Source: org_study_id

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