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Tenecteplase versus standard of care for minor ischaemic stroke with proven occlusion (TEMPO-2): a randomised, open label, phase 3 superiority trial

  • TEMPO-2 investigators
  • University of Calgary
  • King's College London
  • Queen's University Kingston
  • Hospital Clínico Universitario de Valladolid
  • University of Valladolid
  • Foothills Medical Centre
  • Alberta Children's Hospital
  • Griffith University
  • Universidade Estadual Paulista Júlio de Mesquita Filho
  • University of Alberta
  • University of New South Wales
  • Université Laval
  • University of Melbourne
  • University Health Network–Toronto Western Hospital
  • Population Health Research Institute, Ontario
  • Countess of Chester Hospital NHS Foundation Trust
  • Box Hill Hospital
  • Monash University
  • St George's University Hospitals NHS Foundation Trust
  • University of Ottawa
  • St John's of God Hospital Vienna
  • University of British Columbia
  • University of Western Australia
  • Medical University of Vienna
  • Imperial College Healthcare Trust
  • University of Saskatchewan
  • Red Deer Regional Hospital Centre
  • University College Dublin
  • University of Oxford
  • Royal Adelaide Hospital
  • University of Adelaide
  • Queen's Medical Centre
  • Hospital Geral De Fortaleza
  • Western University
  • Hospital Moinhos de Vento
  • Hospital Vall d'Hebron
  • McGill University
  • University of Glasgow
  • Victoria General Hospital
  • Universidade de São Paulo
  • Keele University
  • Fundació Institut d'Investigació Biomèdica de Girona Dr Josep Trueta
  • University College Hospitals London
  • University of Manitoba
  • University of Newcastle
  • John Hunter Hospital
  • Helsinki University Hospital
  • National Neuroscience Institute of Singapore
  • Royal Victoria Hospital Belfast
  • Royal College of Surgeons in Ireland
  • University Hospitals Birmingham NHS Trust
  • Christchurch Hospital New Zealand
  • Sunnybrook Health Sciences Centre
  • Cambridge University Hospitals NHS Trust
  • University of Toronto
  • Städtisches Klinikum Dresden

Research output: Contribution to journalArticlepeer-review

107 Scopus citations

Abstract

BACKGROUND: Individuals with minor ischaemic stroke and intracranial occlusion are at increased risk of poor outcomes. Intravenous thrombolysis with tenecteplase might improve outcomes in this population. We aimed to test the superiority of intravenous tenecteplase over non-thrombolytic standard of care in patients with minor ischaemic stroke and intracranial occlusion or focal perfusion abnormality.

METHODS: In this multicentre, prospective, parallel group, open label with blinded outcome assessment, randomised controlled trial, adult patients (aged ≥18 years) were included at 48 hospitals in Australia, Austria, Brazil, Canada, Finland, Ireland, New Zealand, Singapore, Spain, and the UK. Eligible patients with minor acute ischaemic stroke (National Institutes of Health Stroke Scale score 0-5) and intracranial occlusion or focal perfusion abnormality were enrolled within 12 h from stroke onset. Participants were randomly assigned (1:1), using a minimal sufficient balance algorithm to intravenous tenecteplase (0·25 mg/kg) or non-thrombolytic standard of care (control). Primary outcome was a return to baseline functioning on pre-morbid modified Rankin Scale score in the intention-to-treat (ITT) population (all patients randomly assigned to a treatment group and who did not withdraw consent to participate) assessed at 90 days. Safety outcomes were reported in the ITT population and included symptomatic intracranial haemorrhage and death. This trial is registered with ClinicalTrials.gov, NCT02398656, and is closed to accrual.

FINDINGS: The trial was stopped early for futility. Between April 27, 2015, and Jan 19, 2024, 886 patients were enrolled; 369 (42%) were female and 517 (58%) were male. 454 (51%) were assigned to control and 432 (49%) to intravenous tenecteplase. The primary outcome occurred in 338 (75%) of 452 patients in the control group and 309 (72%) of 432 in the tenecteplase group (risk ratio [RR] 0·96, 95% CI 0·88-1·04, p=0·29). More patients died in the tenecteplase group (20 deaths [5%]) than in the control group (five deaths [1%]; adjusted hazard ratio 3·8; 95% CI 1·4-10·2, p=0·0085). There were eight (2%) symptomatic intracranial haemorrhages in the tenecteplase group versus two (<1%) in the control group (RR 4·2; 95% CI 0·9-19·7, p=0·059).

INTERPRETATION: There was no benefit and possible harm from treatment with intravenous tenecteplase. Patients with minor stroke and intracranial occlusion should not be routinely treated with intravenous thrombolysis.

FUNDING: Heart and Stroke Foundation of Canada, Canadian Institutes of Health Research, and the British Heart Foundation.

Original languageEnglish
Pages (from-to)2597-2605
Number of pages9
JournalThe Lancet
Volume403
Issue number10444
DOIs
StatePublished - Jun 15 2024

Keywords

  • Aged
  • Female
  • Fibrinolytic Agents/therapeutic use
  • Humans
  • Ischemic Stroke/drug therapy
  • Male
  • Middle Aged
  • Prospective Studies
  • Standard of Care
  • Tenecteplase/therapeutic use
  • Thrombolytic Therapy/methods
  • Tissue Plasminogen Activator/therapeutic use
  • Treatment Outcome

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