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Cuivre Cu 64-DOTA-Trastuzumab TEP dans la prédiction de la réponse au traitement par l'ado-trastuzumab emtansine chez les patientes atteintes d'un cancer du sein métastatique HER2 positif

16 octobre 2026 mis à jour par: City of Hope Medical Center

Une étude pilote sur la tomographie par émission de positons 64Cu-DOTA-trastuzumab dans le traitement du cancer du sein HER2 positif avancé avec le conjugué anticorps-médicament ado-trastuzumab emtansine

This pilot clinical trial studies how well copper Cu 64-tetra-azacyclododecanetetra-acetic acid (DOTA)-trastuzumab positron emission tomography (PET) works in predicting response to treatment with ado-trastuzumab emtansine in patients with human epidermal growth factor receptor 2 (HER2) positive breast cancer that has spread to other places in the body. Copper Cu 64-DOTA-trastuzumab is a chemotherapy drug (trastuzumab) attached to a radioactive substance. Diagnostic procedures using PET may allow scanners to take pictures of where the drug travels in the body and may help doctors identify which patients may benefit from treatment with ado-trastuzumab emtansine.

Aperçu de l'étude

Statut

Actif, ne recrute pas

Les conditions

Intervention / Traitement

Description détaillée

PRIMARY OBJECTIVES:

I. Correlate uptake of 64Cu-DOTA-trastuzumab (copper Cu 64-DOTA-trastuzumab) PET by individual tumors with subsequent tumor response to ado-trastuzumab emtansine as assessed by serial 18F-fludeoxyglucose (FDG) (fludeoxyglucose F 18)/PET-computed tomography (CT).

II. Compare tumor uptake of 64Cu-DOTA-trastuzumab PET between patients who do and patients who do not respond to ado-trastuzumab emtansine.

III. Obtain tumor tissue for subsequent assessment of the presence of putative molecular mechanisms of resistance (MMRs) to ado-trastuzumab emtansine. When funding becomes available, those samples will be used to explore the correlation between the presence of MMRs as assessed by histopathology and tumor response to ado-trastuzumab emtansine both in univariate analysis and in combination with tumor uptake of 64Cu-DOTA-trastuzumab as measured with PET/CT.

OUTLINE:

Patients undergo whole body fludeoxyglucose F 18 PET/CT. Patients then receive trastuzumab intravenously (IV) over 15 minutes immediately before receiving copper Cu 64-DOTA-trastuzumab IV and then undergo PET scans at 24 and 48 hours. Patients then receive ado-trastuzumab emtansine IV every 3 weeks until complete response or disease progression at the discretion of the treating oncologist. Patients undergo restaging by whole body fludeoxyglucose F 18 PET/CT every 6 weeks for 1 year after initiation of treatment until disease progression.

After completion of study treatment, patients are followed up for 1 year.

Type d'étude

Interventionnel

Inscription (Réel)

10

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

  • États-Unis
    • California
      • Duarte, California, États-Unis, 91010
        • City of Hope Medical Center

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans et plus (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Femelle

La description

Inclusion Criteria:

  • 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 prior to initiation of chemotherapy; it should be performed within 28 days prior to enrollment (patients with a biopsy of recurrent disease that is HER2-positive and have not received HER2-directed therapy since the biopsy can exceed the 28-day window up to 6 months); 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 site of metastasis >= 20 mm in mean diameter must be identified
  • The cancer must over express HER2 as determined by immunohistochemistry (IHC) and/or fluorescence in situ hybridization (FISH)
  • Patients may not have received trastuzumab within 6 weeks of projected 64Cu-DOTA-trastuzumab/PET-CT
  • Participants must have normal cardiac ejection fraction
  • Ability to provide informed consent
  • Patients that may need dose reduction to commence cycle 1 treatment
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0-2
  • Negative serum pregnancy test (female of childbearing potential only)
  • Patients must have adequate cardiac function; left ventricular ejection fraction (LVEF) >= 50% as determined by multi gated acquisition (MUGA) scan or echocardiogram

Exclusion Criteria:

  • Participants who have received trastuzumab within the prior 36 days
  • Participants who are not considered candidates for ado-trastuzumab-emtansine
  • No metastatic sites >= 20 mm
  • Concurrent malignancy other than skin cancer - Inability to provide informed consent

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Diagnostique
  • Répartition: N / A
  • Modèle interventionnel: Affectation à un seul groupe
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Diagnostic (copper Cu 64-DOTA-trastuzumab PET)

Patients undergo whole body fludeoxyglucose F 18 PET/CT. Patients then receive trastuzumab IV over 15 minutes immediately before receiving copper Cu 64-DOTA-trastuzumab IV and then undergo PET scans at 24 and 48 hours. Patients then receive ado-trastuzumab emtansine IV every 3 weeks until complete response or disease progression at the discretion of the treating oncologist. Patients undergo restaging by whole body fludeoxyglucose F 18 PET/CT every 6 weeks after initiation of treatment until disease progression.
Autre: laboratory biomarker analysis

Correlative studies

Radiation: fludeoxyglucose F 18

Undergo fludeoxyglucose F 18 PET/CT

Autres noms:
  • 18FDG
  • FDG
Procédure: positron emission tomography

Undergo fludeoxyglucose F 18 PET/CT

Autres noms:
  • ANIMAUX
  • FDG-PET
  • TEP-scan
  • tomographie, émission calculée
Procédure: computed tomography

Undergo fludeoxyglucose F 18 PET/CT

Autres noms:
  • tomographie, calculée
Biologique: trastuzumab

Given IV

Autres noms:
  • Herceptine
  • anti-c-erB-2
  • MOAB HER2
Radiation: copper Cu 64-DOTA-trastuzumab

Given IV

Autres noms:
  • 64Cu-DOTA-trastuzumab
Procédure: positron emission tomography

Undergo copper Cu-DOTA-trastuzumab PET

Autres noms:
  • ANIMAUX
  • FDG-PET
  • TEP-scan
  • tomographie, émission calculée
Biologique: ado-trastuzumab emtansine

Given IV

Autres noms:
  • Kadcyla
  • T-DM1
  • trastuzumab-DM1
  • trastuzumab-MCC-DM1
  • conjugué anticorps-médicament trastuzumab-MCC-DM1

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Relationship Between Average Tumor Uptake of Copper Cu 64-DOTA-trastuzumab as Measured by PET and Patient Best Response
Délai: Baseline

Relationship between patient best response to T-DM1 and measured tumor uptake of 64Cu-DOTA-trastuzumab employed a t-test with a 0.05 two-sided significance level comparing average uptake in responsive vs non-responsive patients. Tumor uptake measured as SUV defined as SUV = AC(tsc) Wb /[Dinj exp(-λ(tsc - tinj)] , where AC(tsc) is the activity concentration in the volume of interest (VOI, e. g., a tumor), Wb is the patient's body weight, Dinj is the activity injected at time tinj, and λ is the decay constant for the injected radioisotope. AC(tsc) is determined from the spatial density of counts acquired from the VOI. Tumor uptake was measured in terms of maximum voxel standardized uptake value, SUVmax. Response assessment adhered to Positron Emission Tomography (PET) Response Criteria in Solid Tumors (PERCIST 1.0).
Baseline
Relationship Between Tumor Minimum Uptake of Copper Cu 64-DOTA-trastuzumab as Measured by PET and Patient Best Response
Délai: Up to 1 year

Relationship between patient best response to T-DM1 and measured tumor uptake of 64Cu-DOTA-trastuzumab employed a t-test with a 0.05 two-sided significance level comparing minimum uptake in responsive vs non-responsive patients. Tumor uptake measured as SUV defined as SUV = AC(tsc) Wb /[Dinj exp(-λ(tsc - tinj)] , where AC(tsc) is the activity concentration in the volume of interest (VOI, e. g., a tumor), Wb is the patient's body weight, Dinj is the activity injected at time tinj, and λ is the decay constant for the injected radioisotope. AC(tsc) is determined from the spatial density of counts acquired from the VOI. Tumor uptake was measured in terms of minimum voxel standardized uptake value, SUVmin. Response assessment adhered to Positron Emission Tomography (PET) Response Criteria in Solid Tumors (PERCIST 1.0).
Up to 1 year

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

City of Hope Medical Center

Collaborateurs

National Cancer Institute (NCI)

Les enquêteurs

  • Chercheur principal: Joanne Mortimer, City of Hope Medical Center

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

25 février 2015

Achèvement primaire (Réel)

7 décembre 2021

Achèvement de l'étude (Estimé)

7 septembre 2027

Dates d'inscription aux études

Première soumission

25 août 2014

Première soumission répondant aux critères de contrôle qualité

25 août 2014

Première publication (Estimé)

27 août 2014

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

3 novembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

16 octobre 2026

Dernière vérification

1 octobre 2026

Plus d'information

Termes liés à cette étude

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • 14099
  • 14099 (Autre identifiant: City of Hope Medical Center)
  • NCI-2014-01812 (Identificateur de registre: CTRP (Clinical Trial Reporting Program))

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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