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- Ensayo clínico NCT00887328
Extending the Time for Thrombolysis in Emergency Neurological Deficits (EXTEND)
30 de agosto de 2018 actualizado por: Neuroscience Trials Australia
The primary hypothesis being tested in this trial is that ischaemic stroke patients selected with significant penumbral mismatch (measured by MRI criteria) at 3 - 9 hours post onset of stroke will have improved clinical outcomes when given intravenous tissue plasminogen activator (tPA) compared to placebo.
Descripción general del estudio
Estado
Terminado
Condiciones
Intervención / Tratamiento
Tipo de estudio
Intervencionista
Inscripción (Actual)
180
Fase
- Fase 3
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
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New South Wales
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Kanwal, New South Wales, Australia, 2259
- Gosford Hospital
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Newcastle, New South Wales, Australia
- John Hunter Hospital
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St. Leonards, New South Wales, Australia, 2065
- Royal North Shore Hospital
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Sydney, New South Wales, Australia, 6009
- St. Vincent's Hospital
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Westmead, New South Wales, Australia, 2145
- Westmead Hospital
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Queensland
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Brisbane, Queensland, Australia, 4029
- Royal Brisbane & Women's Hospital
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Gold Coast, Queensland, Australia
- Gold Coast University Hospital
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Nambour, Queensland, Australia, 4560
- Sunshine Coast University Hospital
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South Australia
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Adelaide, South Australia, Australia, 5000
- Royal Adelaide Hospital
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Bedford Park, South Australia, Australia, 5042
- Flinders Medical Centre
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Elizabeth Vale, South Australia, Australia, 5112
- Lyell McEwin Hospital
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Victoria
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Box Hill, Victoria, Australia, 3128
- Box Hill Hospital
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Clayton, Victoria, Australia, 3168
- Monash Medical Centre
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Footscray, Victoria, Australia, 3011
- Western Hospital
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Geelong, Victoria, Australia, 3220
- Geelong Hospital
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Heidelberg, Victoria, Australia
- Austin Hospital
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Melbourne, Victoria, Australia, 3050
- Royal Melbourne Hospital
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Richmond, Victoria, Australia, 3121
- Epworth Healthcare
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Western Australia
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Nedlands, Western Australia, Australia, 6009
- Sir Charles Gairdner Hospital
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Perth, Western Australia, Australia, 6000
- Royal Perth Hospital
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Helsinki, Finlandia
- Helsinki University Central Hospital
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Auckland, Nueva Zelanda, 1001
- Auckland Hospital
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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:
- Patients presenting with hemispheric acute ischaemic stroke
- Patient, family member or legally responsible person depending on local ethics requirements has given informed consent
- Patient's age is ≥18 years
Treatment onset can commence within ≥ 3 - 9 hours after stroke onset according to registered product information, or within 4.5 - 9 hours according to locally accepted guidelines*.
(*Guidelines are currently under international review - advisory statement issued by the Stroke Council, American Heart Association and American Stroke Association)
- Patients who wake with stroke may be included if neurological and other exclusion criteria are satisfied. These 'wake up' strokes are defined as having no symptoms at sleep onset, but stroke symptoms on waking. The time of stroke onset is to be taken as the mid-point between sleep onset (or last known to be normal) and time of waking. The maximum time window for randomisation is then 9 hours from the mid-point as described.
- NIHSS score of ≥ 4 - 26 with clinical signs of hemispheric infarction.
- Penumbral mismatch - A "hypo-perfusion to core" volume ratio of greater than 1.2 and an absolute difference greater than 10mL (using a MR or CT Tmax > 6 second delay) between perfusion lesion and MR-DWI or CT-CBF core lesion.
- An ischaemic core lesion volume of less than or equal to 70 ml using MR-DWI or CT-CBF ** Patients may be consented before or after penumbral screening depending upon local practice. The entire cohort of patients consented onto the study will be followed up with clinical assessments and biomarker studies regardless of eligibility for randomisation to treatment based on penumbral mismatch criteria
Exclusion Criteria:
- Intracranial haemorrhage (ICH) identified by CT or MRI
- Rapidly improving symptoms, particularly if in the judgment of the managing clinician that the improvement is likely to result in the patient having an NIHSS score of < 4 at randomization
- Pre-stroke MRS score of ≥ 2 (indicating previous disability)
- Contra indication to imaging with MR with contrast agents
- Infarct core >1/3 MCA territory qualitatively
- Participation in any investigational study in the previous 30 days
- Any terminal illness such that patient would not be expected to survive more than 1 year
- Any condition that could impose hazards to the patient if study therapy is initiated or affect the participation of the patient in the study (this applies to patients with severe microangiopathy such as haemolytic uremic syndrome or thrombotic thrombocytopenic purpura). The judgment is left to the discretion of the Investigator.
- Pregnant women (clinically evident)
- Previous stroke within last three months
- Recent past history or clinical presentation of ICH, subarachnoid haemorrhage (SAH), arterio-venous (AV) malformation, aneurysm, or cerebral neoplasm. At the discretion of each Investigator.
- Current use of oral anticoagulants or a prolonged prothrombin time (INR > 1.7) if the patient is on warfarin
- Use of heparin, except for low dose subcutaneous heparin, in the previous 48 hours and an activated prolonged partial thromboplastin time exceeding the upper limit of the local laboratory normal range.
- Use of glycoprotein IIb - IIIa inhibitors within the past 72 hours. Use of single or dual agent oral platelet inhibitors (clopidogrel and/or low-dose aspirin) prior to study entry is permitted.
- Clinically significant hypoglycaemia.
- Uncontrolled hypertension defined by a blood pressure > 185 mmHg systolic or >110 mmHg diastolic on at least 2 separate occasions at least 10 minutes apart, or requiring aggressive treatment to reduce the blood pressure to within these limits. The definition of "aggressive treatment" is left to the discretion of the responsible Investigator.
- Hereditary or acquired haemorrhagic diathesis
- Gastrointestinal or urinary bleeding within the preceding 21 days
- Major surgery within the preceding 14 days which poses risk in the opinion of the investigator.
- Exposure to a thrombolytic agent within the previous 72 hours
- Clinically deemed eligible for Endovascular Clot Retrieval (ECR) treatment by the treating team
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: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Triple
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
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Comparador de placebos: Placebo
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placebo proporcionado como polvo liofilizado de 50 mg para reconstituir con agua estéril en viales de vidrio indistinguibles del fármaco activo
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Experimental: IV tPA
intravenous tissue plasminogen activator
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0,9 mg/kg hasta un máximo de 90 mg, por vía intravenosa, 10 % en bolo y el resto en 1 hora
Otros nombres:
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Periodo de tiempo |
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Escala de Rankin modificada (mRS) 0-1
Periodo de tiempo: 3 meses
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3 meses
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
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Cambio categórico en la puntuación de Rankin modificada (mRS)
Periodo de tiempo: 3 meses
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3 meses
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Muerte por cualquier causa
Periodo de tiempo: 3 meses
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3 meses
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Reperfusión
Periodo de tiempo: 24 horas
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24 horas
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Recanalización
Periodo de tiempo: 24 horas
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24 horas
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Accidente cerebrovascular recurrente
Periodo de tiempo: 3 y 12 meses
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3 y 12 meses
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Change in ≥ 8 NIHSS points or reaching ≤ 1 on this scale
Periodo de tiempo: 3 months
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3 months
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Symptomatic ICH
Periodo de tiempo: 24 hours
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Symptomatic hemorrhage defined by SITS-MOST criteria: type 2 parenchymal hematoma associated with ≥4 point increase in NIHSS
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24 hours
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Infarct growth
Periodo de tiempo: 24 hours
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Difference in volumetric DWI volume between baseline and 24 hour MRI
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24 hours
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Depression (Montgomery-Asberg Depression Rating Scale [MADRS])
Periodo de tiempo: 3 and 12 months
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3 and 12 months
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Quality of life (Stroke Impact Scale)
Periodo de tiempo: 3 and 12 months
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3 and 12 months
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Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Stephen Davis, MD FRACP, University of Melbourne
- Investigador principal: Geoffrey Donnan, MD FRACP, The Florey Institute of Neuroscence and Mental Health
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
- Bivard A, Churilov L, Ma H, Levi C, Campbell B, Yassi N, Meretoja A, Zhao H, Sharma G, Chen C, Davis S, Donnan G, Yan B, Parsons M; EXTEND investigators. Does variability in automated perfusion software outputs for acute ischemic stroke matter? Reanalysis of EXTEND perfusion imaging. CNS Neurosci Ther. 2022 Jan;28(1):139-144. doi: 10.1111/cns.13756. Epub 2021 Nov 16.
- Ma H, Campbell BCV, Parsons MW, Churilov L, Levi CR, Hsu C, Kleinig TJ, Wijeratne T, Curtze S, Dewey HM, Miteff F, Tsai CH, Lee JT, Phan TG, Mahant N, Sun MC, Krause M, Sturm J, Grimley R, Chen CH, Hu CJ, Wong AA, Field D, Sun Y, Barber PA, Sabet A, Jannes J, Jeng JS, Clissold B, Markus R, Lin CH, Lien LM, Bladin CF, Christensen S, Yassi N, Sharma G, Bivard A, Desmond PM, Yan B, Mitchell PJ, Thijs V, Carey L, Meretoja A, Davis SM, Donnan GA; EXTEND Investigators. Thrombolysis Guided by Perfusion Imaging up to 9 Hours after Onset of Stroke. N Engl J Med. 2019 May 9;380(19):1795-1803. doi: 10.1056/NEJMoa1813046. Erratum In: N Engl J Med. 2021 Apr 1;384(13):1278.
- Churilov L, Ma H, Campbell BC, Davis SM, Donnan GA. Statistical Analysis Plan for EXtending the time for Thrombolysis in Emergency Neurological Deficits (EXTEND) trial. Int J Stroke. 2020 Feb;15(2):231-238. doi: 10.1177/1747493018816101. Epub 2018 Dec 7.
- Goodin P, Lamp G, Vidyasagar R, Connelly A, Rose S, Campbell BCV, Tse T, Ma H, Howells D, Hankey GJ, Davis S, Donnan G, Carey LM. Correlated Resting-State Functional MRI Activity of Frontostriatal, Thalamic, Temporal, and Cerebellar Brain Regions Differentiates Stroke Survivors with High Compared to Low Depressive Symptom Scores. Neural Plast. 2019 Jul 28;2019:2357107. doi: 10.1155/2019/2357107. eCollection 2019.
- Tse T, Binte Yusoff SZ, Churilov L, Ma H, Davis S, Donnan GA, Carey LM; START research team. Increased work and social engagement is associated with increased stroke specific quality of life in stroke survivors at 3 months and 12 months post-stroke: a longitudinal study of an Australian stroke cohort. Top Stroke Rehabil. 2017 Sep;24(6):405-414. doi: 10.1080/10749357.2017.1318339. Epub 2017 Apr 24.
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 junio de 2010
Finalización primaria (Actual)
27 de agosto de 2018
Finalización del estudio (Actual)
27 de agosto de 2018
Fechas de registro del estudio
Enviado por primera vez
22 de abril de 2009
Primero enviado que cumplió con los criterios de control de calidad
22 de abril de 2009
Publicado por primera vez (Estimar)
23 de abril de 2009
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
31 de agosto de 2018
Última actualización enviada que cumplió con los criterios de control de calidad
30 de agosto de 2018
Última verificación
1 de agosto de 2018
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- NTA0901
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. .