Esta página se tradujo automáticamente y no se garantiza la precisión de la traducción. por favor refiérase a versión inglesa para un texto fuente.

Carbon-11 Acetate and Fluorine F 18 Sodium Fluoride PET as a Biomarker of Treatment Response in Patients With Hormone Resistant Metastatic Prostate Cancer

29 de agosto de 2016 actualizado por: University of Washington

PET Imaging as a Biomarker of Systemic Treatment Response for Men With Metastatic Castration-Resistant Prostate Cancer

This clinical trial studies carbon-11 acetate and fluorine F 18 sodium fluoride positron emission tomography (PET) as a biomarker of treatment response in patients with prostate cancer that does not respond to treatment with hormones and has spread to other parts of the body. Carbon-11 acetate and fluorine F 18 sodium fluoride are radioactive drugs that may be useful in evaluating prostate cancer activity in response to treatment. Comparing results of diagnostic procedures such as carbon-11 acetate and fluorine F 18 sodium fluoride PET done before and after therapy may help doctors predict a patient's response to treatment and help plan the best treatment.

Descripción general del estudio

Estado

Retirado

Condiciones

Intervención / Tratamiento

Descripción detallada

PRIMARY OBJECTIVES:

I. Demonstrate that carbon-11 acetate (11C-acetate) and 18F-fluoride (fluorine F 18 sodium fluoride) PET scans change as a result of treatment for men with metastatic castration-resistant prostate cancer by comparison of pre-treatment and 6-12 week post-treatment images (standardized uptake value [SUV], influx constant [Ki], and rate constant [K1]) with clinical response measures.

SECONDARY OBJECTIVES:

I. Compare results from 11C-acetate and 18F-fluoride PET scanning with the patient's clinical bone scan and determine which predicts clinical response better.

II. Compare changes in 11C-acetate and 18F-fluoride PET with changes in prostate-specific antigen (PSA) level.

III. Compare changes in 11C-acetate and 18F-fluoride PET with changes in urinary N-telopeptide and bone alkaline phosphatase.

IV. Determine if either baseline uptake or change in uptake for 11C-acetate and/or 18F-fluoride PET is correlated with progression-free survival by Prostate Cancer Working Group 2 (PCWG2) criteria (Scher, 2008).

V. Determine if either baseline uptake or change in uptake by 11C-acetate and/or 18F-fluoride PET is correlated with skeletal-related events (SREs) defined as radiographic pathologic fracture, need for radiation to bone, need for surgery, spinal cord compression or malignant hypercalcemia.

VI. Percentage of patients that experience adverse events by Common Terminology Criteria for Adverse Events, version 4.0.

VII. For patients who have tissue/blood biomarkers obtained for other indications, directly compare baseline uptake and change in uptake by 11C-acetate and/or 18F-fluoride PET with those biomarkers.

OUTLINE:

Patients receive carbon-11 acetate intravenously (IV) and fluorine F 18 sodium fluoride IV over 1 minute and undergo PET at baseline and at 6-12 weeks after systemic therapy starts.

After completion of treatment, patients are followed up every 3 months for up to 5 years.

Tipo de estudio

Intervencionista

Fase

  • No aplica

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

  • Estados Unidos
    • Washington
      • Seattle, Washington, Estados Unidos, 98109
        • Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium

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 y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Masculino

Descripción

Inclusion Criteria:

  • Patients preparing to receive systemic therapy to treat metastatic castration-resistant prostate cancer
  • At the time of enrollment, patients must demonstrate evidence of castration-resistant prostate cancer with a documented castrate level of serum total testosterone (< 50 ng/dL) while on continuous androgen deprivation therapy
  • Be informed of the investigational nature of this study and provide written informed consent in accordance with institutional and federal guidelines prior to study-specific screening procedures
  • Be willing and able to comply with scheduled visits and other trial procedures
  • Presence of at least one measurable or detectable metastasis as defined by bone scintigraphy, computed tomography (CT) scan appearance (magnetic resonance imaging [MRI] if indicated), or plain x-ray appearance

Exclusion Criteria:

  • Any condition that would alter the patient's mental status, prohibiting the basic understanding and/or authorization of informed consent
  • A serious underlying medical condition that would otherwise impair the patient's ability to receive treatment and imaging studies
  • Expected lifespan of 12 weeks or less
  • Extremely poor intravenous access, prohibiting the placement of a peripheral IV line for injection of radiotracer
  • Radiation treatment to bone less than 4 weeks from the first PET scan
  • Radiopharmaceutical treatment to bone less than 4 weeks from first PET scan
  • Treatment with granulocyte-macrophage colony stimulating factor (GM-CSF) or granulocyte (G-CSF) within 4 weeks prior to first PET scan; patients should avoid treatment with these agents between the baseline and 6-12 treatment week imaging sessions
  • Inability to lie still for imaging
  • Weight > 300 pounds (lbs)

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

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

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Diagnostic (11C-acetate, 18F-fluoride, PET)
Patients receive carbon-11 acetate IV and fluorine F 18 sodium fluoride IV over 1 minute and undergo PET at baseline and at 6-12 weeks after systemic therapy starts.
Otro: análisis de biomarcadores de laboratorio
Estudios correlativos
Radiación: carbon-11 acetate
Given IV
Radiación: fluorine F 18 sodium fluoride
Given IV
Otros nombres:
  • 18 F-NaF
  • F-18 NaF
Procedimiento: positron emission tomography
Undergo 11C-acetate and 18F-fluoride PET
Otros nombres:
  • MASCOTA
  • PET-FDG
  • Escaneo de mascotas
  • tomografía, emisión computarizada

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Changes in prostate cancer metastases as measured by 11C-acetate and 18F-fluoride PET in response to systemic therapy
Periodo de tiempo: Baseline to up to 12 weeks
Percentage change between pre-treatment and post-therapy measurements will be computed for PET measures. Log transformations will be considered if the rates of change are highly skewed. Additionally, changes in PET measures will be analyzed descriptively by a stem-and-leaf plot.
Baseline to up to 12 weeks

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Clinical response data (response, stable disease or progression)
Periodo de tiempo: Up to 5 years
Molecular imaging measures and clinical measures of treatment response, percentage change in PET derived imaging data will be compared to standard clinical parameters. Association between these two types of data decline will be analyzed using the mid-P adjustment to Fisher's exact test (Lancaster, 1961) to evaluate the potential clinical utility of change in 11C-acetate and 18F-fluoride as a biomarker for response.
Up to 5 years
Proportion of both 11C-acetate and 18F-fluoride PET scans and 99mTc bone scans in discovering suspicious sites that are later confirmed by standard bone scans
Periodo de tiempo: Up to 5 years
Statistical significance of two proportions will be tested with a two-sample t-test for proportions (or nonparametric alternative).
Up to 5 years
Change in PSA parameters
Periodo de tiempo: Baseline to up to 30 days post-PET
Spearman rank correlation will be used to examine correlations between PET parameters and continuous variable changes in PSA.
Baseline to up to 30 days post-PET
Change in urinary N-telopeptide
Periodo de tiempo: Baseline to up to 30 days post-PET
Spearman rank correlation will be used to examine correlations between PET parameters and continuous variable changes in urinary N-telopeptide.
Baseline to up to 30 days post-PET
Change in bone alkaline phosphatase
Periodo de tiempo: Baseline to up to 30 days post-PET
Spearman rank correlation will be used to examine correlations between PET parameters and continuous variable changes in bone alkaline phosphatase.
Baseline to up to 30 days post-PET
Progression-free survival (PFS) using PCWG2
Periodo de tiempo: Up to 5 years
Cox proportional hazards model will be used to investigate the predictive value of the differences in pre- and post- treatment measures on PCWG2 PFS.
Up to 5 years
SRE defined as radiographic pathologic fracture, need for radiation to bone, need for surgery, spinal cord compression or malignant hypercalcemia
Periodo de tiempo: Up to 5 years
Cox proportional hazards model will be used to investigate the predictive value of the differences in pre- and post- treatment measures on time of first SRE.
Up to 5 years

Colaboradores e Investigadores

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

Patrocinador

University of Washington

Colaboradores

National Cancer Institute (NCI)

Investigadores

  • Investigador principal: Evan Yu, Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium

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 diciembre de 2015

Finalización primaria (Anticipado)

1 de noviembre de 2018

Fechas de registro del estudio

Enviado por primera vez

18 de junio de 2014

Primero enviado que cumplió con los criterios de control de calidad

18 de junio de 2014

Publicado por primera vez (Estimar)

20 de junio de 2014

Actualizaciones de registros de estudio

Última actualización publicada (Estimar)

31 de agosto de 2016

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

29 de agosto de 2016

Última verificación

1 de agosto de 2016

Más información

Términos relacionados con este estudio

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • 8021 (Otro identificador: Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium)
  • P30CA015704 (Subvención/contrato del NIH de EE. UU.)
  • NCI-2014-01203 (Identificador de registro: CTRP (Clinical Trial Reporting Program))

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 próstata recurrente

Ensayos clínicos sobre análisis de biomarcadores de laboratorio

Buscar ensayos similares

Patrocinadores y Colaboradores

Condiciones médicas

Intervenciones de drogas

CROs by country

CROs in Türkiye

Condiciones

Enfermedades Raras

Intervenciones de drogas

Suplementos dietéticos

Patrocinador / Colaboradores

Localizaciones

3
Suscribir