Extending the Time Window for Tenecteplase by Effective Reperfusion in Patients with Large Vessel Occlusion (ETERNAL-LVO)

January 13, 2025 updated by: Bruce Campbell, University of Melbourne

Extending the Time Window for Tenecteplase by Effective Reperfusion of PeNumbrAL Tissue in Patients with Large Vessel Occlusion

Patients presenting to the emergency department with an acute ischemic stroke due to a large vessel occlusion eligible for thrombectomy and target mismatch on computed tomography perfusion imaging within 24 hours of onset will be assessed determine their eligibility for randomization into the trial. If the patient gives informed consent they will be randomised using a central computerised allocation process to either standard of care (no intravenous thrombolytic treatment or intravenous alteplase 0.9mg/kg) or tenecteplase before undergoing intra-arterial clot retrieval. The trial is prospective, randomised, open-label, blinded endpoint (PROBE) design.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
242

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Australia
    • New South Wales
      • Liverpool, New South Wales, Australia
        • Liverpool Hospital
      • Newcastle, New South Wales, Australia
        • John Hunter Hospital
      • Randwick, New South Wales, Australia
        • Prince of Wales Hospital
    • Queensland
      • Woolloongabba 4102, Queensland, Australia, 4102
        • Princess Alexandra Hospital
    • South Australia
      • Adelaide, South Australia, Australia, 5000
        • Royal Adelaide Hospital
    • Victoria
      • Melbourne, Victoria, Australia, 3050
        • Royal Melbourne Hospital
      • Melbourne, Victoria, Australia
        • Box Hill Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients presenting with acute hemispheric ischemic stroke with onset (or the time they last known to be well) within 24 hours.
  • Patient's age is ≥18 years.
  • Premorbid mRS <3, with a concurrent assessment of whether the patient was able, immediately prior to the stroke, to: 1) Drive, or (if never drives) perform own Domestic duties, and 2) Shop for themselves, and 3) Bank/do their own finances (i.e. Drive/Domestic, Bank, Shop = DBS +ve). Need to be DBS +ve to be study eligible.
  • Presence of a vessel occlusion on CTA or MRA. LVO will be defined as 'potentially retrievable' thrombus at one or more of the following sites: intracranial internal carotid (ICA), middle cerebral artery (MCA) first segment (M1), proximal middle cerebral artery second segment (M2) or isolated/tandem occlusion of the extracranial ICA. Patients with an extracranial ICA stenosis and occlusion are also eligible.
  • Presence of 'target mismatch' on automated perfusion CT (CTP) or diffusion-perfusion MRI software defined as an ischemic core of <70mL, penumbra of >20mL and an ischemic core to perfusion lesion ratio of >1.8

Exclusion Criteria:

  • Intracranial hemorrhage (ICH) or other diagnosis (e.g. tumor).
  • Basilar Artery occlusion.
  • Extensive early ischemic change (hypodensity on NCCT or high signal on DWI-MRI) or early ischemic change outside the perfusion lesion that invalidates mismatch criteria.
  • Pre-stroke mRS score of > 2 (indicating significant previous disability) or DBS -ve.
  • Any terminal illness such that patient would not be expected to survive more than 1 year
  • Any condition that, in the judgment of the investigator could impose hazards to the patient if study therapy is initiated or affect the participation of the patient in the study.
  • Pregnant women.
  • Other standard contraindications to thrombolysis.
  • Minor stroke symptoms, or major stroke symptoms rapidly improving
  • Clinical presentation suggesting subarachnoid haemorrhage
  • Known bleeding diasthesis and/or platelet count <100,000 or taking warfarin with INR > 1.7.
  • Patients who have received heparin within 48 hours must have normal aPTT.
  • Major surgery or serious trauma within 14 days, serious head trauma within 3 months.
  • GI or urinary tract haemorrhage within last 21 days
  • Arterial puncture at a non-compressible site or lumbar puncture within 7 days
  • Systolic BP > 185, diastolic BP > 110mmHg
  • Clinical stroke within 3 months or history of ICH
  • Unable to gain consent from patient or person responsible
  • Known severe renal impairment (GFR < 15mls/min)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Intravenous tenecteplase (TNK)
Patients will receive intravenous tenecteplase (0.25mg/kg, maximum 25mg, administered as a bolus over 5-10 seconds).
Drug: Tenecteplase
Genetically modified tissue plasminogen activator at a dose of 0.25mg/kg given as intravenous bolus over 5-10 seconds
Active Comparator: Intravenous tissue plasminogen activator (tPA)
Patients will receive standard of care (no intravenous thrombolytic treatment or intravenous alteplase 0.9mg/kg at the standard licensed dose of 0.9 mg/kg up to a maximum of 90mg, 10% as bolus and the remainder over 1 hour.
Drug: Standard Care (which may include intravenous Alteplase)
Patients will receive standard care which may include intravenous alteplase at the standard licensed dose of 0.9 mg/kg up to a maximum of 90mg, 10% as bolus and the remainder over 1 hour.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Modified Rankin Scale (mRS) 0-1 (no disability) or return to baseline mRS
Time Frame: 90 days
Modified Rankin Scale (mRS) 0-1 (no disability) or return to baseline mRS (if baseline premorbid mRS =2) at 90 days
90 days

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Early clinical improvement
Time Frame: 24 hours
Reduction in National Institutes of Health Stroke Scale (NIHSS) score of ≥8 points at 24 hours or reaching NIHSS 0-1
24 hours
Modified Rankin Scale (mRS) 0-2 (functional independence)
Time Frame: 90 days
Modified Rankin Scale (mRS) 0-2 (functional independence) at 90 days
90 days
Substantial reperfusion at initial angiographic assessment
Time Frame: initial angiography within 24 hours of stroke onset
Proportion of patients with >50% reperfusion of the affected vascular territory (mTICI 3b/3) on initial digital subtraction angiography prior to thrombectomy
initial angiography within 24 hours of stroke onset
Symptomatic intracerebral hemorrhage (sICH)
Time Frame: 24 hours post-randomization
sICH defined as parenchymal hematoma type 2 (PH2) - blood clot occupying >30% of the infarcted territory with substantial mass effect
24 hours post-randomization
Death due to any cause
Time Frame: 90 days
90 days
Modified Rankin Scale (mRS) 5-6
Time Frame: 90 days
Poor functional outcome of death or requirement for fulltime nursing care
90 days
Successful reperfusion at 24 hours
Time Frame: 24 hours
Reperfusion (defined as >90% and >50% reduction in perfusion lesion volume)
24 hours
Infarct growth
Time Frame: 24 hours
Increase in the volume of irreversibly injured brain between pre-treatment and 24 hour imaging
24 hours
Recanalization
Time Frame: 24 hours
Change in vessel patency between pre-treatment and 24h imaging (CT or MR angiography)
24 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Melbourne

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Professor Mark Parsons

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 28, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 6, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 16, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 28, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 2, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 25, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 13, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2019.125

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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