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Feasibility Evaluation of the Muse Magnetic Resonance Guided Focused Ultrasound System

A Feasibility Evaluation of the Muse Magnetic Resonance Guided Focused Ultrasound System

Status
Recruiting
Phases
Early Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05291507
Acronym
BreastMRgFUS
Enrollment
34
Registered
2022-03-22
Start date
2023-01-23
Completion date
2028-08-01
Last updated
2026-03-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Brief summary

This is an open-label, single arm, single center, non-randomized feasibility study of the Muse MRgFUS System in subjects with breast cancer. Subjects will undergo partial ablation of half (≤50%) of one of their tumors (if multifocal or multicentric disease) followed by surgical resection per standard of care. The partial tumor ablation design will ensure that no information is lost that would impact the subject's standard of clinical care. Because current care often includes testing on the tumor, retaining a portion of viable tumor is advised by the clinical team. To ensure viable tissue confirmation, patients will be enrolled in two cohorts as described in the protocol. The investigators will use imaging correlation, histological evaluation, and subject reported outcomes to assess the safety, tolerability, and efficacy of the Muse MRgFUS System. This proposed study will adhere to the guidelines of subjects receiving a timely tumor resection after diagnosis. All subjects will undergo the definitive procedure of surgical resection per standard of care. Surgical resection cannot be delayed as a result of the ablation and should occur within 6 weeks after the decision to proceed with surgical resection. In cases where a surgery may occur outside of the 6 week window, prior approval from the external DSMC should be obtained. While MRgFUS ablation is designed to be a breast-conserving technique, the investigators will enroll patients that are undergoing any surgical resection, including both lumpectomy or mastectomy. Both surgical procedures will allow assessment of the defined primary, secondary and exploratory objectives.

Interventions

DEVICEMuse MRgFUS System

The intended use of the device is to thermally ablate breast tissue under magnetic resonance image guidance. The thermal ablation is performed non-invasively using extracorporeal focused ultrasound.

Sponsors

University of Utah
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

This is an open-label, single arm, single center, non-randomized feasibility study of the Muse MRgFUS System in subjects with breast cancer.

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Subject is able to speak and understand English. * Female subjects 18 years of age or older with invasive breast cancer undergoing surgery * ECOG \< 2. * ASA (American Society of Anesthesiologists) Physical Status Classification Scale assessment of I-II. * Adequate breast size for MUSE device assessed by physician prior to study enrollment. * Able to provide informed consent and willing to sign an approved consent form that conforms to federal and institutional guidelines. * Adequate Renal Function defined as an eGFR \> 30 mL/min/1.73. * Female subjects of childbearing potential must agree to use a highly effective method of contraception as described in Section 5.4.1. * Negative pregnancy test or evidence of post-menopausal status or evidence of permanent surgical sterilization (i.e. bilateral oophorectomy, bilateral salpingectomy, or hysterectomy). The post-menopausal status will be defined as having been amenorrhoeic for 12 months without an alternative medical cause. The following age-specific requirements apply: * Women \< 50 years of age: ---Amenorrhoeic for ≥ 12 months following cessation of exogenous hormonal treatments; and ----Luteinizing hormone and follicle-stimulating hormone levels in the post-menopausal range for the institution. * Women ≥ 50 years of age: * Amenorrhoeic for 12 months or more following cessation of all exogenous hormonal treatments; or * Had radiation-induced menopause with last menses \>1 year ago; or * Had chemotherapy-induced menopause with last menses \>1 year ago.

Exclusion criteria

* Receiving other investigational agents at the time of study registration. * Prior systemic anti-cancer therapy or any investigational therapy for neoadjuvant treatment of breast cancer. * Prior radiation therapy to the ipsilateral breast or radiation whose field(s) encompassed the breast within which the current diagnosis of cancer is made. * The diagnosis of another malignancy within ≤ 2 years before study enrollment, except for those considered to be adequately treated with no evidence of disease or symptoms and/or will not require therapy during the study duration (i.e., basal cell or squamous cell skin cancer, carcinoma in situ of the breast, or bladder or of the cervix). Low risk malignancies may be allowed after discussion with PI and medical monitor. * Women with breast implants * Pregnant or lactating women * Inability to lie prone for 90 minutes as reported by patient or determined by investigator assessment. * Known prior adverse reaction or allergy to commonly used sedatives (i.e. versed, propofol) (NCI CTCAE v5.0 Grade ≥ 3). * Known prior adverse reaction or allergy to gadolinium contrast (NCI CTCAE v5.0 Grade ≥ 3). * Contraindication to MRI as determined by treating physician or patient response on MRI patient history and safety questionnaire (Appendix 4) * Medical, psychiatric, cognitive, or other conditions in the opinion of the investigator that may compromise the subject's ability to understand the subject information, give informed consent, comply with the study protocol or complete the study. Additional

Design outcomes

Primary

MeasureTime frameDescription
frequency of adverse events (AEs), adverse device effects (ADEs), and serious adverse events (SAEs) characterized by duration2 monthsevaluate the safety, feasibility, and tolerability of soft tissue ablation with the Muse MRgFUS system as assessed by subject-reported procedural pain and incidence of device- and procedure-related adverse device effects and adverse events
frequency of adverse events (AEs), adverse device effects (ADEs), and serious adverse events (SAEs) characterized by type2 monthsevaluate the safety, feasibility, and tolerability of soft tissue ablation with the Muse MRgFUS system as assessed by subject-reported procedural pain and incidence of device- and procedure-related adverse device effects and adverse events
frequency of adverse events (AEs), adverse device effects (ADEs), and serious adverse events (SAEs) characterized by severity (as defined by the NCI CTCAE, version 5.0)2 monthsevaluate the safety, feasibility, and tolerability of soft tissue ablation with the Muse MRgFUS system as assessed by subject-reported procedural pain and incidence of device- and procedure-related adverse device effects and adverse events
frequency of adverse events (AEs), adverse device effects (ADEs), and serious adverse events (SAEs) characterized by seriousness2 monthsevaluate the safety, feasibility, and tolerability of soft tissue ablation with the Muse MRgFUS system as assessed by subject-reported procedural pain and incidence of device- and procedure-related adverse device effects and adverse events
frequency of adverse events (AEs), adverse device effects (ADEs), and serious adverse events (SAEs) characterized by relationship to the investigational intervention reported during and after the procedure as compared to baseline2 monthsevaluate the safety, feasibility, and tolerability of soft tissue ablation with the Muse MRgFUS system as assessed by subject-reported procedural pain and incidence of device- and procedure-related adverse device effects and adverse events

Secondary

MeasureTime frameDescription
Evaluate ablation efficacy by pathologic assessment1 monthestimate ablation efficacy
Disease-free survival (DFS) as defined as the time from the date of ablation to the date of first recurrence or death from any cause5 yearsestimate disease-free survival (DFS) at 5 years post ablation
Overall survival (OS) as defined as the time from registration until death from any cause5 yearsestimate overall survival in this study population at 5 years post ablation
Evaluate ablation efficacy by MRI treatment assessment metrics of thermal dose1 monthestimate ablation efficacy
Evaluate ablation efficacy by T1-weighted non-perfused volume.1 monthestimate ablation efficacy
Evaluate how heat-induced pathways effect associations between vascular organization and immune cell infiltration.5 yearsAnalysis via bulk RNA sequencing data

Countries

United States

Contacts

CONTACTJanna Espinosa
janna.espinosa@hci.utah.edu801-585-0571
PRINCIPAL_INVESTIGATORCindy Matsen, MD

Huntsman Cancer Institute

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 18, 2026