Prevention of Stroke and Systemic Embolic Events in Patients With Atrial Fibrillation
20 de marzo de 2012 actualizado por: AstraZeneca
A Controlled, Randomized, Parallel, Multicentre Study to Assess Safety and Tolerability of the Oral Direct Thrombin Inhibitor AZD0837, Given as an Extended-release Formulation, in the Prevention of Stroke and Systemic Embolic Events in Patients With Atrial Fibrillation
The main purpose of this study is to provide dose-guiding information by assessing the safety and tolerability of 4 different dosing regimens of an extended-release (ER) formulation of AZD0837 compared with well-controlled, dose-adjusted Vitamin-K antagonists (VKA) (aiming for an international normalized ratio (INR) 2.0 to 3.0) in patients with non-valvular atrial fibrillation (AF) with one or more additional risk factors for stroke.
Descripción general del estudio
Estado
Terminado
Condiciones
Intervención / Tratamiento
Tipo de estudio
Intervencionista
Inscripción (Actual)
1084
Fase
- Fase 2
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
Todos
Descripción
Inclusion Criteria:
- Nonvalvular AF (NVAF) verified by at least two ECGs in the last year separated by at least one week.
- Previous cerebral ischemic attack (stroke or TIA, >30 days prior to randomization)
- Previous systemic embolism.
- Symptomatic congestive heart failure (CHF)
- Impaired left ventricular systolic function
- Diabetes mellitus
- Hypertension requiring anti-hypertensive treatment.
Exclusion Criteria:
- AF secondary to reversible disorders, eg hyperthyroidism, drugs and pulmonary embolism
- Known contraindication to VKA treatment
- Presence of a valvular heart disease, mechanical heart valves, active endocarditis, left ventricular aneurysm or thrombus, atrial myxoma or any condition other than AF requiring chronic anticoagulation treatment
- Conditions associated with increased risk of major bleeding for example: history of intracranial bleeding, history of bleeding gastrointestinal disorder or major surgical procedure or trauma two weeks prior to randomization
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: Prevención
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Triple
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Experimental: 1
AZD0837 450 mg
|
ER tablet, PO, once daily for a period of 3-9 months.
ER tablet, PO, twice daily for a period of 3-9 months
|
|
Experimental: 2
AZD0837 200 mg
|
ER tablet, PO, once daily for a period of 3-9 months.
ER tablet, PO, twice daily for a period of 3-9 months
|
|
Experimental: 3
AZD0837 300 mg
|
ER tablet, PO, once daily for a period of 3-9 months.
ER tablet, PO, twice daily for a period of 3-9 months
|
|
Experimental: 4
AZD0837 150 mg
|
ER tablet, PO, once daily for a period of 3-9 months.
ER tablet, PO, twice daily for a period of 3-9 months
|
|
Comparador activo: 5
Vitamin-K antagonist at INR 2-3
|
Tablet, PO for a period of 3-9 months.
Otros nombres:
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Bleeding Events
Periodo de tiempo: 36 weeks according to protocol. For patients who discontinued treatment the time frame was <36 weeks. Mean number of weeks was 21 weeks (baseline to end of treatment visit)
|
Number of patients with a bleeding event while on study drug.
Patients with multiple events are counted once
|
36 weeks according to protocol. For patients who discontinued treatment the time frame was <36 weeks. Mean number of weeks was 21 weeks (baseline to end of treatment visit)
|
|
Creatinine
Periodo de tiempo: 12 weeks according to protocol.(baseline to week 12 visit)
|
Change in Creatinine values from baseline to week 12 visit for patients while on study drug (week 12 visit-baseline)
|
12 weeks according to protocol.(baseline to week 12 visit)
|
|
Alanine Aminotransferase (ALAT)
Periodo de tiempo: 36 weeks according to protocol. For patients who discontinued treatment the time frame was <36 weeks. Mean number of weeks was 21 weeks (baseline to end of treatment visit)
|
Number of patients while on study drug with ALAT>=3 times upper limit of normal.l
|
36 weeks according to protocol. For patients who discontinued treatment the time frame was <36 weeks. Mean number of weeks was 21 weeks (baseline to end of treatment visit)
|
|
Bilirubin
Periodo de tiempo: 36 weeks according to protocol. For patients who discontinued treatment the time frame was <36 weeks. Mean number of weeks was 21 weeks (baseline to end of treatment visit)
|
Number of patients while on study drug with Bilirubin>=2 times upper limit of normal
|
36 weeks according to protocol. For patients who discontinued treatment the time frame was <36 weeks. Mean number of weeks was 21 weeks (baseline to end of treatment visit)
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
D-Dimer
Periodo de tiempo: 14 weeks according to protocol.(enrolment to week 12 visit)
|
Change in D-Dimer values from enrolment to week 12 visit for VKA naïve patients while on study drug (week 12 visit-enrolment)
|
14 weeks according to protocol.(enrolment to week 12 visit)
|
|
Activated Partial Thromboplastin Time (APTT)
Periodo de tiempo: 12 weeks according to protocol.(baseline to week 12 visit)
|
Change in Activated partial thromboplastin time (APTT) from baseline to week 12 visit for VKA naïve patients while on study drug (week 12 visit-baseline)
|
12 weeks according to protocol.(baseline to week 12 visit)
|
|
Ecarin Clotting Time (ECT)
Periodo de tiempo: 12 weeks according to protocol.(baseline to week 12 visit)
|
Change in Ecarin clotting time (ECT) from baseline to week 12 visit for patients while on study drug (week 12 visit-baseline)
|
12 weeks according to protocol.(baseline to week 12 visit)
|
|
Plasma Concentration of AZD0837 (Prodrug)
Periodo de tiempo: 12 weeks after baseline according to protocol
|
Assessment made on the week 12 visit
|
12 weeks after baseline according to protocol
|
|
Plasma Concentration of AR-H067637XX (Active Metabolite)
Periodo de tiempo: 12 weeks after baseline according to protocol
|
Assessment made on the week 12 visit
|
12 weeks after baseline according to protocol
|
|
Oral Clearance (CL/F) of AR-H067637XX (Active Metabolite) for C3435T Genotype TT
Periodo de tiempo: 36 weeks according to protocol
|
Oral clearance of AR-H067637XX in subgroup of patients with genotype TT for gene polymorphism ABCB1 C3435T
|
36 weeks according to protocol
|
|
Oral Clearance (CL/F) of AR-H067637XX (Active Metabolite) for C3435T Genotype TC
Periodo de tiempo: 36 weeks according to protocol
|
Oral clearance of AR-H067637XX in subgroup of patients with genotype TC for gene polymorphism ABCB1 C3435T
|
36 weeks according to protocol
|
|
Oral Clearance (CL/F) of AR-H067637XX (Active Metabolite) for C3435T Genotype CC
Periodo de tiempo: 36 weeks according to protocol
|
Oral clearance of AR-H067637XX in subgroup of patients with genotype CC for gene polymorphism ABCB1 C3435T
|
36 weeks according to protocol
|
Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Investigadores
- Investigador principal: Gregory Y Lip, Prof, University Department of Medicine, City Hospital, Birmingham, B18 7QH, England, UK
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 febrero de 2007
Finalización primaria (Actual)
1 de junio de 2008
Finalización del estudio (Actual)
1 de junio de 2008
Fechas de registro del estudio
Enviado por primera vez
22 de mayo de 2008
Primero enviado que cumplió con los criterios de control de calidad
23 de mayo de 2008
Publicado por primera vez (Estimar)
26 de mayo de 2008
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
23 de marzo de 2012
Última actualización enviada que cumplió con los criterios de control de calidad
20 de marzo de 2012
Última verificación
1 de marzo de 2012
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
- Procesos Patológicos
- Enfermedades cardíacas
- Enfermedades cardiovasculares
- Arritmias Cardiacas
- Fibrilación auricular
- Efectos fisiológicos de las drogas
- Mecanismos moleculares de acción farmacológica
- Agentes moduladores de fibrina
- Micronutrientes
- Vitaminas
- Anticoagulantes
- Agentes antifibrinolíticos
- Hemostáticos
- Coagulantes
- Vitamina K
- Warfarina
Otros números de identificación del estudio
- D1250C00008
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. .