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A Study to Investigate the Potential Interaction Between Telaprevir and Methadone, at Steady-State

30 de noviembre de 2012 actualizado por: Tibotec BVBA

A Phase I, Open-Label, Single-Sequence Drug-Drug Interaction Trial in Subjects on Stable Methadone Maintenance Therapy, to Investigate the Potential Interaction Between Telaprevir 750 mg q8h and Methadone, at Steady-State

The purpose of this study is to evaluate the effect of steady-state (constant concentration of medication in the blood) telaprevir 750 mg every 8 hours on the steady-state pharmacokinetics (how the drug concentrations change over time) of R- and S-methadone.

Descripción general del estudio

Estado

Terminado

Condiciones

Intervención / Tratamiento

Descripción detallada

This is a Phase 1, open-label (all people know the identity of the intervention), single-sequence study to evaluate the potential interaction of steady-state telaprevir on the steady-state pharmacokinetics of methadone. The study consists of 3 phases: the screening phase (within 21 days prior to the start of supervised methadone intake on Day -14), treatment phase, and follow-up phase. Participants on stable methadone maintenance therapy will be enrolled in this study and their methadone doses will not be changed starting at Day -14. During the treatment phase, telaprevir will be added for 7 days (from Day 1 to Day 7) to participants' current methadone therapy. The methadone dosage will not to be changed from Day -14 until Day 7. All the intakes of methadone and telaprevir will be supervised and pharmacokinetic parameters will be measured during the study. Safety evaluations for adverse events, clinical laboratory tests, alcohol breath test, cardiovascular safety, and other evaluations (physical examination, and pharmacodynamic assessments) will be performed throughout the study. The total duration of the study for each participant is approximately 60 days.

Tipo de estudio

Intervencionista

Inscripción (Actual)

18

Fase

  • Fase 1

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 55 años (Adulto)

Acepta Voluntarios Saludables

Sí

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • Must receive once daily oral methadone maintenance therapy at a stable individualized dose of 30 to 130 mg for at least 2 weeks prior to screening, formulated as commercially available tablets or solution
  • Must agree not to change the current methadone dose from screening until Day 7 included to have a daily observed and documented methadone intake from Day -14 until Day 8 and a daily observed and documented telaprevir intake from Day 1 until Day 7
  • Participants have to obtain approval for participation from his/her addiction physician, and the addiction physician has to agree to provide medical care for the participant after discharge from study center
  • General medical condition must not interfere with the assessments and the completion of the study
  • Health assessments will be done on the basis of physical examination, medical history, electrocardiogram, vital signs and the results of blood biochemistry, blood coagulation and hematology tests and a urinalysis carried out at screening

Exclusion Criteria:

  • History of any illness that could confound the results of the study or pose an additional risk in administering study medication to the participant, for eg, history of relevant medication or food allergies, history of cardiovascular or central nervous system disease, history or presence of clinically significant pathology or history of mental disease
  • Consumption of herbal medications or dietary supplements, vitamins, and grapefruit or grapefruit juice, apple juice or orange juice within 14 days before Day -1
  • Current alcohol use, which, in the assessment of the investigator, could compromise participant's safety or compliance with the study protocol procedures
  • Test positive for drugs of abuse such as cocaine, amphetamines, barbiturates, benzodiazepines, or opiates on Day -2 unless explained by allowed concomitant medications
  • Participation in a clinical study involving administration of an investigational medication within 60 days or 5 half-lives (whichever was longer) prior to the screening visit

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: Telaprevir + Methadone
Patients will receive telaprevir 750 mg orally, every 8 hours from Day 1 to Day 7, along with methadone 30 to 130 mg, once daily.
Droga: Telaprevir
Telaprevir 750 mg will be administered orally, every 8 hours from Day 1 to Day 7, along with methadone, once daily.
Droga: Methadone
Methadone 30 to 130 mg will be administered as a stable oral therapy from Day -14 to Day -1, in combination with telaprevir from Day 1 to Day 7, and then alone as a continued intake dose for an additional 30 to 32 days.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Maximum plasma concentration (Cmax) of telaprevir
Periodo de tiempo: On Day 7
Pharmacokinetic parameter Cmax of telaprevir is measured when telaprevir will be administered at 750 mg every 8 hours for 7 days added to stable methadone maintenance therapy.
On Day 7
Minimum plasma concentration (Cmin) of telaprevir
Periodo de tiempo: On Day 7
Pharmacokinetic parameter Cmin of telaprevir is measured when telaprevir will be administered every 8 hours for 7 days added to stable methadone maintenance therapy.
On Day 7
Area under the plasma concentration-time curve (AUC) of telaprevir
Periodo de tiempo: On Day 7
Pharmacokinetic parameter AUC of telaprevir is measured when telaprevir will be administered every 8 hours for 7 days added to stable methadone maintenance therapy.
On Day 7
Cmax of R-methadone
Periodo de tiempo: Day -1 and Day 7
Pharmacokinetic parameter Cmax of R-methadone is measured during stable methadone maintenance therapy alone and in the presence of steady-state telaprevir at 750 mg every 8 hours.
Day -1 and Day 7
Cmin of R-methadone
Periodo de tiempo: Day -1 and Day 7
Pharmacokinetic parameter Cmin of R-methadone is measured during stable methadone maintenance therapy alone and in the presence of steady-state telaprevir every 8 hours.
Day -1 and Day 7
AUC of R-methadone
Periodo de tiempo: Day -1 and Day 7
Pharmacokinetic parameter AUC of R-methadone is measured during stable methadone maintenance therapy alone and in the presence of steady-state telaprevir every 8 hours.
Day -1 and Day 7
Cmax of S-methadone
Periodo de tiempo: Day -1 and Day 7
Pharmacokinetic parameter Cmax of S-methadone is measured during stable methadone maintenance therapy alone and in the presence of steady-state telaprevir at 750 mg every 8 hours.
Day -1 and Day 7
Cmin of S-methadone
Periodo de tiempo: Day -1 and Day 7
Pharmacokinetic parameter Cmin of S-methadone is measured during stable methadone maintenance therapy alone and in the presence of steady-state telaprevir every 8 hours.
Day -1 and Day 7
AUC of S-methadone
Periodo de tiempo: Day -1 and Day 7
Pharmacokinetic parameter AUC of S-methadone is measured during stable methadone maintenance therapy alone and in the presence of steady-state telaprevir every 8 hours.
Day -1 and Day 7

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Short Opiate Withdrawal Scale [SOWS]
Periodo de tiempo: Day -7, and Day -2 to Day 7
Pharmacodynamic assessments of methadone withdrawal are performed by means of SOWS.
Day -7, and Day -2 to Day 7
Desires for Drugs Questionnaire [DDQ]
Periodo de tiempo: Day -7, and Day -2 to Day 7
Pharmacodynamic assessments of methadone withdrawal are performed by means of DDQ.
Day -7, and Day -2 to Day 7
Pupillometry
Periodo de tiempo: Day -1, Day 2, Day 4, and Day 7
Pharmacodynamic assessments of methadone withdrawal are performed by means of pupillometry.
Day -1, Day 2, Day 4, and Day 7
Number of participants with adverse events
Periodo de tiempo: Up to 60 days
Up to 60 days

Colaboradores e Investigadores

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

Patrocinador

Tibotec BVBA

Colaboradores

Vertex Pharmaceuticals Incorporated

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.

Publicaciones Generales

Enlaces Útiles

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 julio de 2009

Finalización primaria (Actual)

1 de noviembre de 2009

Finalización del estudio (Actual)

1 de diciembre de 2009

Fechas de registro del estudio

Enviado por primera vez

2 de julio de 2009

Primero enviado que cumplió con los criterios de control de calidad

2 de julio de 2009

Publicado por primera vez (Estimar)

7 de julio de 2009

Actualizaciones de registros de estudio

Última actualización publicada (Estimar)

3 de diciembre de 2012

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

30 de noviembre de 2012

Última verificación

1 de noviembre de 2012

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • CR015931
  • VX-950-TiDP24-C135 (Otro identificador: Tibotec-Virco Virology BVBA)

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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