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Pilot Study of 18F Fluoropaclitaxel (FPAC)

11 de enero de 2012 actualizado por: Virginia Commonwealth University

Pilot Study of 18F Fluoropaclitaxel (FPAC) in Breast Cancer Patients and Normal Volunteers: Dosimetry and Imaging Feasibility

Multidrug resistance (MDR) is a cause of treatment failure in many cancer patients. MDR refers to a phenotype whereby a tumor is resistant to a large number of natural chemotherapeutic drugs. Having prior knowledge of the presence of such resistance would decrease morbidity from unsuccessful therapy and allow for the selection of individuals who may benefit from co-administration of MDR inhibiting drugs. The Tc-99m labeled single photon emitting radiotracers sestamibi and tetrofosmin have shown some predictive value. However, positron-emitting (PET) radiotracers, which allow for dynamic, quantitative imaging, hold the promise of more accurate and specific identification of MDR tumors.

Objective:

To obtain human safety data, to demonstrate imaging feasibility with FPAC, to obtain human biodistribution and to obtain preliminary evidence of breast tumor uptake concordance with response to therapy.

Descripción general del estudio

Estado

Terminado

Condiciones

Intervención / Tratamiento

Descripción detallada

18F flouropaclitaxel (FPAC) distribution in malignant tumors is expected to be similar to that of paclitaxel. It is proposed that by monitoring the influx and efflux of FPAC in vivo using PET imaging, we will be able to determine if a tumor retains the drug (is drug sensitive) or pumps it out (is drug resistant). The efflux rate of FPAC in the tumor should be proportional the amount of Pgp present and therefore should be a predictor of treatment failure. If this method is successful at identifying MDR, patients can be spared a course of ineffective chemotherapy and can be started on alternative drugs or, if available, an effective MDR modulator can be administered prior to treatment.

In order to validate the biodistribution in non-human primate, 3 normal volunteers will be recruited to participate in a dosimetry PET imaging protocol.

Often, patients with breast cancer are treated with chemotherapy prior to definitive surgical removal of the primary tumor. Three patients with breast cancer who are candidates for this neoadjuvant chemotherapy will also be recruited to participate in this study, in order to demonstrate the feasibility of tumor imaging. As these patients will be receiving chemotherapy (likely paclitaxel), a preliminary correlation with FPAC uptake and tumor response can also be attempted in this pilot study.

Primary Objective

--To obtain human dosimetry and monitor for potential physiologic effects following 4-[F-18] fluoropaclitaxel (FPAC) administration

Secondary Objectives

  • a.To characterize tracer uptake in tumors and normal tissues and develop robust methods for analysis of FPAC kinetics in breast tumors
  • b.To optimize the imaging protocol for FPAC, and, if feasible, reduce to 1 or 2 static scans

Tipo de estudio

Intervencionista

Inscripción (Actual)

6

Fase

  • Fase temprana 1

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

    • Virginia
      • Richmond, Virginia, Estados Unidos, 23298
        • Virginia Commonwealth University

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

18 años a 90 años (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

Géneros elegibles para el estudio

Todos

Descripción

Normal Volunteers

Inclusion Criteria:

  • Subjects must be 18 years or older for inclusion in this study. Because no dosing or adverse event data are currently available on the use of FPAC in patients <18 years of age, children are excluded from this study but will be eligible for future pediatric single-agent trials, if applicable.

    • All subjects must sign a written informed consent document and a Health Insurance Portability and Accountability Act (HIPAA) authorization in accordance with institutional guidelines.
    • If female, the subject must be postmenopausal for a minimum of one year, or surgically sterile, or be within 14 days of onset of a menstrual period or have a negative beta human chorionic gonadotropin (ßHCG) blood test.
    • Subjects must have normal organ and marrow function as defined below:
    • Leukocytes >3,000/μL
    • absolute neutrophil count >1,500/μL
    • platelets >100,000/μL
    • total bilirubin within normal institutional limits
    • aspartate aminotransferase (AST)/alanine aminotransferase (ALT) <= 2.5 times the institutional upper limit of normal
    • Creatinine within normal institutional limits OR, in subjects with creatinine levels above institutional normal, creatinine clearance >60 mL/min/1.73 m2

Exclusion Criteria:

  • Subject with a known bleeding disorder

    • Subjects who have received chemotherapy within 1 year of entry into study
    • Subjects with a history of liver or kidney disease
    • Subjects who are receiving any other investigational agents
    • Subjects having severe claustrophobia or other condition that would make them unable to lie still for the duration of the study
    • Subjects with immunodeficiencies that predispose a subject to specific or non-specific mediator release
    • Subjects with uncontrolled intercurrent illness, including but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
    • Subjects who are pregnant or lactating or who suspect they might be pregnant. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with FPAC, breastfeeding should be discontinued if the mother receives FPAC.

Breast Cancer Patients

Inclusion Criteria:

  • Subjects must have a history of histologically or cytologically confirmed breast cancer with estimated lesion size of >1cm.

    • Subjects must be 18 years or older for inclusion in this study. Because no dosing or adverse event data are currently available on the use of FPAC in patients <18 years of age, children are excluded from this study but will be eligible for future pediatric single-agent trials, if applicable.
    • All subjects must sign a written informed consent document and a HIPAA authorization in accordance with institutional guidelines.
    • If female, the subject must be postmenopausal for a minimum of one year, be surgically sterile, be within 14 days of onset of a menstrual period, or have a negative ßHCG blood test.
    • Subjects must have normal organ and marrow function as defined below:
    • Leukocytes >3,000/μL
    • absolute neutrophil count >1,500/μL
    • platelets >100,000/μL
    • total bilirubin within normal institutional limits
    • aspartate aminotransferase (AST)/alanine aminotransferase (ALT) <= 2.5 times the institutional upper limit of normal
    • Creatinine within normal institutional limits OR, in subjects with creatinine levels above institutional normal, creatinine clearance >60 mL/min/1.73 m2

Exclusion Criteria:

•as above

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Asignación: N / A
  • Modelo Intervencionista: Asignación de un solo grupo
  • Enmascaramiento: Ninguno (etiqueta abierta)

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Periodo de tiempo
Imaging feasibility and dosimetry
Periodo de tiempo: <6months
<6months

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio

1 de mayo de 2005

Finalización primaria (Actual)

1 de marzo de 2008

Finalización del estudio (Actual)

1 de marzo de 2008

Fechas de registro del estudio

Enviado por primera vez

11 de diciembre de 2007

Primero enviado que cumplió con los criterios de control de calidad

11 de diciembre de 2007

Publicado por primera vez (Estimar)

13 de diciembre de 2007

Actualizaciones de registros de estudio

Última actualización publicada (Estimar)

12 de enero de 2012

Última actualización enviada que cumplió con los criterios de control de calidad

11 de enero de 2012

Última verificación

1 de enero de 2012

Más información

Términos relacionados con este estudio

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

Ensayos clínicos sobre Cáncer de mama

Ensayos clínicos sobre 4- [F-18] fluoropaclitaxel

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