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Abiraterone Race in Metastatic Castrate-resistant Prostate Cancer

16 de noviembre de 2020 actualizado por: Duke University

A Phase II Open-label, Parallel Group Study of Abiraterone Acetate Plus Prednisone in African American and Caucasian Men With Metastatic Castrate-resistant Prostate Cancer

The primary goal is to prospectively estimate the median radiographic PFS of African American and Caucasian men with mCRPC to abiraterone acetate and prednisone.

Descripción general del estudio

Estado

Terminado

Condiciones

Intervención / Tratamiento

Descripción detallada

This is a non-comparative pilot open-label, parallel arm, multicenter study of abiraterone acetate in African American and Caucasian men with mCRPC. Patients will self-report on race and 50 patients will be enrolled into each group. Patients will be treated on open-label treatment until evidence of disease progression as defined by Prostate Cancer Working Group Two (PCWG2) definition or until two years at which point they will roll over to the standard of care at that time. The study agent abiraterone acetate will be administered by the patient at a dose of 1000mg orally once daily with prednisone 5 mg BID in 4-week cycles throughout the treatment period.

Tipo de estudio

Intervencionista

Inscripción (Actual)

100

Fase

  • Fase 2

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
    • Alabama
      • Birmingham, Alabama, Estados Unidos, 35233
        • Birmingham VA Medical Center
    • Louisiana
      • New Orleans, Louisiana, Estados Unidos, 70112
        • Tulane Cancer Center
    • Michigan
      • Detroit, Michigan, Estados Unidos, 48201
        • Karmanos Cancer Institute
    • North Carolina
      • Chapel Hill, North Carolina, Estados Unidos, 27599
        • University of North Carolina
      • Durham, North Carolina, Estados Unidos, 27710
        • Duke University Medical Center
      • Henderson, North Carolina, Estados Unidos, 27536
        • Maria Parham Medical Center
      • Laurinburg, North Carolina, Estados Unidos, 28352
        • Scotland Memorial Hospital
      • Lumberton, North Carolina, Estados Unidos, 28359
        • Southeastern Regional
      • Raleigh, North Carolina, Estados Unidos, 27609
        • Duke Raleigh Hospital
      • Salisbury, North Carolina, Estados Unidos, 28144
        • W. G. 'Bill' Hefner VA Medical Center
      • Smithfield, North Carolina, Estados Unidos, 27577
        • Johnston Memorial Hospital
      • Winston-Salem, North Carolina, Estados Unidos, 27157
        • Wake Forest University
    • South Carolina
      • Spartanburg, South Carolina, Estados Unidos, 29303
        • Spartanburg Regional
    • Virginia
      • Hampton, Virginia, Estados Unidos, 23666
        • Virginia Oncology Associates

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:

  • Male, age ≥ 18 years
  • Karnofsky performance status ≥ 70
  • Life expectancy of ≥ 12 months
  • Willing to take abiraterone acetate on an empty stomach; no food should be consumed at least two hours before and for at least one hour after the dose of abiraterone acetate is taken, and should be able to swallow tablets whole, without crushing/chewing tablets
  • Patients who have partners of childbearing potential must be willing to use a method of birth control with adequate barrier protection as determined to be acceptable by the principal investigator and sponsor during the study and for 1 week after last dose of abiraterone acetate
  • Adequate laboratory parameters
  • Histologically confirmed diagnosis of adenocarcinoma of the prostate. Histologic variants of prostate cancer, including neuroendocrine features and small cell carcinoma of the prostate are excluded
  • Radiographic evidence of metastatic disease; evaluable non-target lesions and/or bone only metastasis are permitted
  • Ongoing ADT using an LHRH agonist (e.g. leuprolide, goserelin) or antagonist (e.g. degarelix) must continue on therapy unless prior bilateral orchiectomy has been performed. Screening serum testosterone must be <50 ng/dl
  • PSA ≥ 2.0 ng/mL

  • Evidence of of castration resistant disease on ADT as evidenced by one of the following:

    • Absolute rise in PSA of 2.0 ng/mL or greater, minimum 2 consecutive rising PSA levels with an interval of ≥ 1 week between each PSA level, OR
    • 2 consecutive PSA levels 50% or greater above the PSA nadir achieved on ADT and separated at least 1 week apart, OR
    • CT or MRI based evidence of disease progression (soft tissue, nodal or visceral disease progression) according to modified PCWG2 criteria or modified RECIST 1.1 criteria, or at least 1 new bone scan lesion as compared to the most immediate prior radiologic studies)
  • A minimum of 2 weeks elapsed off of antiandrogen therapy prior to start of study drug (i.e. flutamide, nilutamide, bicalutamide)
  • A minimum of 4 weeks elapsed off of sipuleucel-T prior to start of study drug
  • A minimum of 4 weeks from any major surgery prior to start of study drug
  • Self-reported race of either African American or Caucasian
  • Ability to swallow, retain, and absorb oral medication

Exclusion Criteria:

  • Prior treatment with abiraterone acetate or enzalutamide
  • Active infection or other medical condition that would make prednisone/prednisolone (corticosteroid) use contraindicated
  • Any chronic medical condition requiring a higher dose of corticosteroid than 5mg prednisone/prednisolone bid
  • Have known allergies, hypersensitivity, or intolerance to abiraterone acetate or prednisone or their excipients
  • Pathological finding consistent with small cell carcinoma of the prostate
  • Symptomatic Liver or visceral organ metastasis
  • Have a history of gastrointestinal disorders (medical disorders or extensive surgery) that may interfere with the absorption of the study agents
  • Known brain metastasis
  • Prior cytotoxic chemotherapy or biologic therapy for the treatment of CRPC
  • Previously treated with ketoconazole for prostate cancer for greater than 7 days
  • Prior systemic treatment with an azole drug (e.g. fluconazole, itraconazole) within 4 weeks of Cycle 1, Day 1
  • Uncontrolled hypertension (systolic BP ≥ 160 mmHg or diastolic BP ≥ 95 mmHg). Patients with a history of hypertension are allowed provided blood pressure is controlled by anti-hypertensive treatment.
  • Poorly controlled diabetes
  • Active or symptomatic viral hepatitis or chronic liver disease
  • History of pituitary or adrenal dysfunction
  • Clinically significant heart disease as evidenced by myocardial infarction, or arterial thrombotic events in the past 6 months, severe or unstable angina, or New York Heart Association (NYHA) Class II-IV heart disease or cardiac ejection fraction measurement of < 50% at baseline
  • Atrial Fibrillation or other cardiac arrhythmia requiring therapy
  • Other malignancy, except non-melanoma skin cancer, with a ≥ 30% probability of recurrence within 24 months
  • Administration of an investigational therapeutic within 30 days of Cycle 1, Day 1
  • Any condition which, in the opinion of the investigator, would preclude participation in this trial

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

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Abiraterone Acetate and Prednisone
abiraterone acetate will be administered by the patient at a dose of 1000mg orally once daily with prednisone 5 mg BID in 4-week cycles
Droga: Prednisona
Droga: Acetato de abiraterona
Otros nombres:
  • Zytiga

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Median Radiographic Progression Free Survival (PFS)
Periodo de tiempo: up to 2 years
Time in months from the start of study treatment to the date of first progression according to Prostate Cancer Working Group 2 criteria, or to death due to any cause. Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0), as a 20% increase in the sum of the longest diameter of target lesions, or a measurable increase in a non-target lesion, or the appearance of new lesions. Patients alive who had not progressed as of the last follow-up had PFS censored at the last follow-up date. Median rPFS was estimated using a Kaplan-Meier curve.
up to 2 years

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change in PSA Response
Periodo de tiempo: Baseline and up to 2 years
Percent of men with Prostate Specific Antigen (PSA) declines > 30%, > 50% and > 90%
Baseline and up to 2 years
Median Time to PSA Progression
Periodo de tiempo: up to 2 years
Time to PSA progression as defined by PCWG 2 criteria is the date that a 25% or greater increase and an absolute increase of 2 ng/mL or more from the nadir is documented, which is confirmed by a second value obtained 3 or more weeks later.
up to 2 years
Number of Men With PSA Decline to < 0.1 and < 0.2 ng/ml
Periodo de tiempo: up to 2 years
Number of men who achieve a PSA decline to < 0.1 and < 0.2 ng/ml
up to 2 years
Percent of Subjects Experiencing Hypertension
Periodo de tiempo: up to 2 years
Incidence and grade of hypertension in the two populations. (Grade 1: Systolic BP 120 to 139 mmHg or diastolic BP 80 to 89 mmHg, Grade 2: Systolic BP 140 to 159 mmHg or diastolic BP 90 to 99 mmHg, Grade 3: Systolic BP ≥160 mmHg or diastolic BP ≥100 mmHg, Grade 4: Life-threatening consequences, urgent intervention indicated)
up to 2 years
Overall Survival
Periodo de tiempo: up to 3 years
Length of patient's life after starting study
up to 3 years

Colaboradores e Investigadores

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

Patrocinador

Duke University

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 (Actual)

1 de octubre de 2013

Finalización primaria (Actual)

8 de octubre de 2019

Finalización del estudio (Actual)

8 de octubre de 2019

Fechas de registro del estudio

Enviado por primera vez

9 de septiembre de 2013

Primero enviado que cumplió con los criterios de control de calidad

11 de septiembre de 2013

Publicado por primera vez (Estimar)

12 de septiembre de 2013

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

9 de diciembre de 2020

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

16 de noviembre de 2020

Última verificación

1 de noviembre de 2020

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • Pro00046383
  • 212082PCR2018 (Otro identificador: Janssen)

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. .

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