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FES PET/MRI for Occult Disease in Lobular Breast Cancer

30. oktober 2026 opdateret af: University of Wisconsin, Madison

A Diagnostic Accuracy Study of FES PET/MRI for the Detection of Occult Disease in Lobular Breast Cancer

The investigators hope to learn if lobular breast cancer can be identified using a special procedure called a positron emission tomography (PET) magnetic resonance image (MRI) scan, collectively a PET/MRI scan, that uses a radioactive imaging agent called Fluorine 18 fluoroestradiol (18F-FES). This procedure may be able to define the extent of disease more clearly than the standard of care breast imaging exams. 30 participants will be enrolled and be on study for up to 6 months.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This prospective study aims to estimate the added value of supplemental 18F-FES PET/MRI following standard-of-care (SOC) preoperative assessments for detecting occult disease in ILC. The investigators hypothesize that there is increased sensitivity of 18F-FES PET/MRI for detecting additional locoregional and distant site(s) of disease that is occult on SOC imaging.

Primary Objective: To estimate the increased sensitivity of 18F-FES PET/MRI for detecting disease that is occult on SOC imaging

Secondary Objectives: To characterize the

  • Positive predictive value of additional pathology-confirm disease.
  • Proportion of upstaging (composite T, N and M stages)
  • Frequency of extensive breast disease (e.g., multifocal, multicentric or contralateral).
  • Change in clinical management (e.g., changes in treatment intent, conversion to neoadjuvant therapy).
  • Agreement of ILC tumor size between imaging exams (18F FES PET-MRI and SOC breast MRI, ultrasound and mammogram) and histopathologic exams.
  • Error rate in size measurements between radiology and pathology for primary ILC.
  • Change in surgical management (e.g., conversion to mastectomy).

Exploratory objectives: 1) To correlate 18F-FES standardized uptake value of SUVmax with immunohistochemical quantification of ER expression and ILC cellularity. 2) To define an 18F-FES SUVmax threshold for pathology-confirmed ER-positive ILC.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

30

Fase

  • Fase 4

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

    • Wisconsin
      • Madison, Wisconsin, Forenede Stater, 53792
        • UW Carbone Cancer Center

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

Inclusion Criteria:

  • Adults assigned female sex at birth
  • Newly diagnosed ILC confirmed on core-needle biopsy (greater than or equal to 1 percent ER staining per American Society of Clinical Oncology/College of American Pathologists (ASCO/CAP) guidelines)
  • have undergone or will undergo standard-of-care (SOC) clinical and imaging assessments (e.g., mammography, ultrasound, breast MRI)
  • planning for mastectomy or breast-conserving surgery within 12 months of their initial diagnosis
  • Provision of signed and dated informed consent form

Exclusion Criteria:

  • Patients with history of ipsilateral axillary lymph node dissection

  • Patients who received anti-estrogen therapy such as selective estrogen receptor degrader (SERD, e.g., fulvestrant, elacestrant) in the last 28 weeks or selective estrogen receptor modulator (SERM, e.g., tamoxifen, raloxifene) in the last 8 weeks.

  • Pregnancy or breastfeeding

  • Patients with known allergic or hypersensitivity reactions to previously administered GBCAs or related drug.

  • Patients with a contraindication to MRI, or who cannot be positioned within the scanner because their body weight or diameter exceeds the scanner limits.

  • Patients requiring intravenous (IV) conscious sedation for imaging are not eligible; patients requiring mild, oral anxiolytics for the clinical MRI will be allowed to participate as long as the following criteria are met:

    1. The subject has their own prescription for the medication
    2. The informed consent process is conducted prior to the self-administration of this medication
    3. They come to the research visit with a driver
  • Concurrent participation in another clinical study that, in the judgment of the PI, would interfere with study procedures, endpoint assessment, interpretation of imaging findings, or participant safety.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Participants with Lobular Breast Cancer

Participants will undergo FES PET/MRI imaging after SOC imaging, followed by SOC breast surgery / biopsy

  • Dose: Approximately 6 millicuries (mCi) (222 megabecquerels (MBq)) ± 20%
  • Administration: IV injection, contralateral to the primary tumor site
  • Physical Half-life: ~110 minutes
  • Mechanism: FES binds to estrogen receptors expressed on tumor cells, enabling visualization of ER-positive disease sites.
Andre navne:
  • Ceriana
  • Fluoroestradiol
  • 18F-FES
  • PET radiopharmaceutical

Participant undergoes PET/MRI scan to image ER-positive disease sites

Andre navne:
  • MR scanning
  • PET/MRI

Administered during the MRI portion of the examination

Andre navne:
  • GBCA

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Percent of Participants where Disease is Detected using 18F-FES-PET/MRI
Tidsramme: up to 6 months

The number of participants for which disease is detected using 18F-FES-PET/MRI compared to the number of samples identified with disease (histopathology) will be reported to estimate the sensitivity of 18F-FES-PET/MRI for detecting disease that is occult (hidden) on SOC imaging.

up to 6 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Participant Level Positive Predictive Value (PPV)
Tidsramme: up to 6 months

Defined by histopathology as the reference standard. This is the odds of 18F-FES-PET/MRI imaging predicting disease.

up to 6 months
Proportion of Participants Upstaged using a composite of the T, N, and M stages
Tidsramme: up to 6 months

A cancer is staged by describing the: the size of the Tumor, whether the cancer has spread to lymph Nodes, and whether the cancer has spread to other organs, or Metastasized (TNM staging). TNM upstaging is when a patient is discovered to have more advanced cancer than initially imaging.

up to 6 months
Proportion of patients who are diagnosed with pathology-proven multifocal, multicentric or contralateral disease
Tidsramme: up to 6 months

The proportion of patients who are diagnosed with pathology-proven multifocal, multicentric or contralateral disease will be measured to characterize the frequency of the detection of extensive breast involvement by 18F-FES-PET/MRI.

up to 6 months
Percent of participants where 18F-FES-PET/MRI changed clinical care compared to SOC image
Tidsramme: up to 6 months

The following will be reviewed: frequency of changes in treatment intent from curative to palliative after detecting occult metastatic disease; conversion to neoadjuvant therapy after detecting occult locally advanced disease; and changes in axillary surgery from sentinel lymph node biopsy to targeted axillary dissection or complete axillary lymph node dissection after detecting occult axillary metastases in order to characterize the clinical impact of 18F-FES-PET/MRI on treatment decision.

up to 6 months
Lesion-level agreement of the maximal tumor dimension
Tidsramme: up to 6 months

The lesion-level agreement of the maximal tumor dimension for the indexed ILC lesion, comparing imaging measurements with pathology measurements among patients who underwent definitive surgery will be reported to characterize the agreement of ILC tumor size between imaging exams (18F FES PET-MRI and SOC breast MRI, ultrasound and mammogram) and histopathologic exams.

up to 6 months
Lesion-level error rate in maximal tumor dimension
Tidsramme: up to 6 months

The lesion-level error rate in maximal tumor dimension using pre-specified relative threshold of less than or equal to 25 percent difference between imaging and pathology measurements will be reported to characterize the error rate in size measurements between radiology and pathology for primary ILC.

up to 6 months
Percent of participants where 18F-FES-PET/MRI changed surgical planning
Tidsramme: up to 6 months

The frequency of changed surgical planning (conversion from planned lumpectomy to mastectomy due to extensive breast involvement; margin re-excision in those undergoing lumpectomy; conversion to mastectomy in those initially managed with lumpectomy) will be reported to characterize the clinical impact of 18F-FES-PET/MRI on surgical planning.

up to 6 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Samarbejdspartnere

Efterforskere

  • Ledende efterforsker: Wenhui Zhou, MD, PhD, UW School of Medicine and Public Health

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. november 2026

Primær færdiggørelse (Anslået)

1. november 2028

Studieafslutning (Anslået)

1. november 2028

Datoer for studieregistrering

Først indsendt

26. oktober 2026

Først indsendt, der opfyldte QC-kriterier

26. oktober 2026

Først opslået (Faktiske)

2. november 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

3. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

30. oktober 2026

Sidst verificeret

1. oktober 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 2026-1072
  • SMPH | Radiology (Anden identifikator: UW Madison)
  • Protocol Version 8/14/26 (Anden identifikator: UW Madison)
  • UW26018 (Anden identifikator: OnCore ID)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ja

produkt fremstillet i og eksporteret fra U.S.A.

Ja

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