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Positron-emissionstomografi hos kvinder med avanceret HER2-positiv brystkræft

20. oktober 2026 opdateret af: City of Hope Medical Center

64 Cu-DOTA-Trastuzumab Positron Emission Tomografi hos kvinder med avanceret HER2 positiv invasiv brystkræft

RATIONALE: Diagnostic procedures, such as copper Cu 64-DOTA-trastuzumab-labeled PET, may help doctors to plan a better treatment

PURPOSE: This pilot trial is studying copper Cu 64-tetra-azacyclododecanetetra-acetic acid (DOTA)-trastuzumab-labeled positron emission tomography (PET) in women with human epidermal growth factor receptor 2 (HER2)-positive breast cancer.

Studieoversigt

Status

Aktiv, ikke rekrutterende

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

PRIMARY OBJECTIVES:

I. Determine the dose of pre-administered cold antibody that optimizes image quality of 64Cu-DOTA-trastuzumab PET without increasing the radiation dose to the heart in women with metastatic HER2 positive breast cancer.

II. Determine whether tumor uptake on 64Cu-DOTA-trastuzumab PET correlates with tumor expression of HER2 in women with metastatic disease.

III. Perform an exploratory analysis of the relationship between uptake on 64Cu-DOTA-trastuzumab PET, HER2 overexpression, and inactivation of the PI3K/Akt pathway.

OUTLINE:

This is a part one dose-determining study followed by a part two study. PART ONE: Patients are randomized to 1 of 3 dose levels. Patients undergo a PET scan 24-48 hours after injection of 64 Cu-DOTA-trastuzumab. PART TWO: Patients undergo a PET scan 24-48 hours after injection of 64 Cu-DOTA-trastuzumab at the optimal dose as determined in part one of the study.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

18

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

  • Forenede Stater
    • California
      • Duarte, California, Forenede Stater, 91010
        • City of Hope

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

Eligibility Part I (Determination of the cold dose)

  • Participants must be women who have histological confirmation of metastatic invasive breast cancer that has metastasized outside the region of the primary tumor and axilla. Biopsy must be obtained within 28 days prior to study. Patients must have metastatic disease in lung, liver, soft-tissue or bone to qualify for the study (more than one site is permissible).
  • At least 1 non-hepatic site of metastasis greater than or equal to 2 cm in mean diameter must be identified in addition to the site that was biopsied.
  • The cancer must over express HER2 as determined by IHC and FISH.
  • Patients may have received trastuzumab in the adjuvant, neoadjuvant, or metastatic setting, but cannot have received the drug within the prior 2 months.
  • Participants must have normal cardiac ejection fraction.

Eligibility Part 2 (correlation of HER2 expression with PET uptake)

  • Participants must be women who have histological confirmation of metastatic invasive breast cancer that has metastasized outside the region of the primary tumor and axilla. Biopsy must be obtained within 28 days prior to study. Patients must have metastatic disease in lung, liver, soft-tissue or bone to qualify for the study (more than one site is permissible).
  • At least 1 non-hepatic site of metastasis site greater than or equal to 2 cm in mean diameter must be identified in addition to the site that was biopsied.
  • Participants with HER2 1+, 2+ and 3+ by IHC are eligible.
  • Patients may have received trastuzumab in the adjuvant, neoadjuvant, or metastatic setting, but cannot have received the drug within the prior 2 months.
  • Participants must have normal cardiac ejection fraction.

Ineligibility

  • Participants who have received trastuzumab within the prior 2 months
  • Participants who are not considered candidates for trastuzumab
  • Metastatic disease in a single site
  • No metastatic site greater than or equal to 2 cm
  • Concurrent malignancy other than skin cancer
  • Inability to provide informed consent
  • Participants who are pregnant

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: Arm I

PART ONE: Patients are randomized to 1 of 3 dose levels. Patients undergo a PET scan 24-48 hours after injection of copper Cu 64-DOTA-trastuzumab. PART TWO: Patients undergo a PET scan 24-48 hours after injection of copper Cu 64-DOTA-trastuzumab.
Andet: laboratory biomarker analysis

Correlative studies

Procedure: positron emission tomography

PET images performed on a GE Discovery 16 Ste PET-CT scanner

Andre navne:
  • KÆLEDYR
  • FDG-PET
  • PET-scanning
  • tomografi, emission beregnet
Stråling: copper Cu 64-DOTA-trastuzumab

15 mCi of Cu 64-DOTA-trastuzumab, total trastuzumab dose less than 5 mg.

Andre navne:
  • 64Cu-DOTA-trastuzumab
Procedure: Biopsy

Correlative Studies

Andre navne:
  • biopsier
Andet: Immunohistochemistry staining method

Correlative studies

Andre navne:
  • immunhistokemi
Genetisk: mutation analysis

Correlative studies

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Tumor Uptake of 64Cu-DOTA-trastuzumab After 24 Hours
Tidsramme: 24 hours after injection of 64 CU-DOTA-trastuzumab

Comparison of uptake between the HER2+ and HER2- groups, treating SUVmax measurements for individual tumors as independent observations. Statistical significance of differences in SUVmax between patient groups was assessed via a nonparametric (Wilcoxon rank-sum) test.

Radiolabel uptake for tumors was measured in terms of single-voxel maximum SUV (SUVmax; SUV = tissue activity per mL x body weight [g]/injected activity decay-corrected to time of scan).
24 hours after injection of 64 CU-DOTA-trastuzumab
Tumor Uptake of 64Cu-DOTA-trastuzumab After 48 Hours
Tidsramme: 48 hours after injection of 64 CU-DOTA-trastuzumab

Comparison of uptake between the HER2+ and HER2- groups, treating SUVmax measurements for individual tumors as independent observations. Statistical significance of differences in SUVmax between patient groups was assessed via a nonparametric (Wilcoxon rank-sum) test.

Radiolabel uptake for tumors was measured in terms of single-voxel maximum SUV (SUVmax; SUV = tissue activity per mL x body weight [g]/injected activity decay-corrected to time of scan).
48 hours after injection of 64 CU-DOTA-trastuzumab

Samarbejdspartnere og efterforskere

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

Sponsor

City of Hope Medical Center

Efterforskere

  • Ledende efterforsker: Joanne Mortimer, City of Hope Medical Center

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 (Faktiske)

16. marts 2011

Primær færdiggørelse (Faktiske)

23. oktober 2018

Studieafslutning (Anslået)

9. august 2027

Datoer for studieregistrering

Først indsendt

23. marts 2010

Først indsendt, der opfyldte QC-kriterier

25. marts 2010

Først opslået (Anslået)

26. marts 2010

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

4. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

20. oktober 2026

Sidst verificeret

1. oktober 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 09101
  • NCI-2010-00322 (Registry Identifier: NCI CTRP)
  • BC095002 (Andet bevillings-/finansieringsnummer: Department of Defense)

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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