Tenecteplase in Stroke Patients Between 4.5 and 24 Hours (TIMELESS)
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| ClinicalTrials.gov Identifier: NCT03785678 |
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Recruitment Status :
Completed
First Posted : December 24, 2018
Last Update Posted : April 28, 2023
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Sponsor:
Genentech, Inc.
Information provided by (Responsible Party):
Genentech, Inc.
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Brief Summary:
This study will evaluate the efficacy and safety of tenecteplase compared with placebo in participants with acute ischemic stroke (AIS).
All participants will receive standard-of-care therapy according to AmericanHeart Association/American Stroke Association clinical guidelines (2018). To determine eligibility for randomization, all participants will undergo multimodal CT or MRI at baseline. Only participants with a vessel occlusion (ICA or MCA M1/M2) and penumbral tissue will be randomized. The primary analysis is to compare the efficacy of tenecteplase versus placebo in all participants at Day 90.
| Condition or disease | Intervention/treatment | Phase |
|---|---|---|
| THROMBOLYSIS | Biological: Tenecteplase Other: Placebo | Phase 3 |
| Study Type : | Interventional (Clinical Trial) |
| Actual Enrollment : | 452 participants |
| Allocation: | Randomized |
| Intervention Model: | Parallel Assignment |
| Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
| Primary Purpose: | Treatment |
| Official Title: | A Phase III, Prospective, Double-blind, Randomized, Placebo-controlled Trial of Thrombolysis in Imaging-eligible, Late-window Patients to Assess the Efficacy and Safety of Tenecteplase (TIMELESS) |
| Actual Study Start Date : | March 2, 2019 |
| Actual Primary Completion Date : | February 28, 2023 |
| Actual Study Completion Date : | February 28, 2023 |
Resource links provided by the National Library of Medicine
Drug Information available for:
Tenecteplase
| Arm | Intervention/treatment |
|---|---|
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Experimental: Tenecteplase
Patients in this arm will receive Tenecteplase (0.25 mg/kg, maximum 25 mg) administered as a single bolus injection over 5 seconds.
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Biological: Tenecteplase
The investigational medicinal product (IMP) for this study is tenecteplase. The recommended total dose for this study is weight-based with 0.25 mg of tenecteplase per kg, not exceeding a maximum dose of 25 mg. A single bolus dose should be administered over 5 seconds based on patient weight. |
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Placebo Comparator: Placebo
Patients in this arm will receive placebo administered as a single bolus injection over 5 seconds.
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Other: Placebo
Placebo is being used as the comparator since a thrombolytic is only FDA-approved in the United States for use out to 3 hours, and the standard of care guidelines support use out to 4.5 hours. |
Primary Outcome Measures :
- Ordinal modified Rankin scale (mRS) score [ Time Frame: Day 90 ]The Efficacy of Tenecteplase compared to placebo is evaluated in terms of Ordinal mRS score at day 90.
Secondary Outcome Measures :
- Proportion of patients with functional independence [ Time Frame: Day 90 ]The efficacy of Tenecteplase is evaluated in terms of proportion of patients with functional independence, defined as an mRS of 0-2, at Day 90
- Proportion of patients with angiographic reperfusion [ Time Frame: Day 1 ]The efficacy of Tenecteplase is evaluated in terms of proportion of patients with angiographic reperfusion at completion of angiographic procedure (endovascular patients only).
- Median NIHSS score [ Time Frame: Day 90 ]The efficacy of Tenecteplase is evaluted in terms of Median NIHSS score at Day 90.
- Proportion of patients with a Barthel Index (BI) score >=95 [ Time Frame: Day 90 ]The efficacy of Tenecteplase is evaluated in terms of Proportion of patients with a BI score >=95 at Day 90.
- Proportion of patients with good recovery based on the Glasgow Outcome Scale (GOS) at Day 90 [ Time Frame: Day 90 ]The efficacy of Tenecteplase is evaluated in terms of the proportion of patients with good recovery based on the GOS at Day 90.
- Proportion of patients with reperfusion at 24 hours post-randomization [ Time Frame: Day 2 ]The efficacy of Tenecteplase is evaluated in terms of proportion of patients with reperfusion at 24 hours post-randomization, defined as >90% reduction in Tmax>6s lesion volume
- Proportion of patients with recanalization at 24 hours post-randomization [ Time Frame: Day 2 ]The efficacy of Tenecteplase is evaluated in terms of proportion of patients with recanalization at 24 hours post-randomization, defined as complete or partial recanalization on CT angiography (CTA)/magnetic resonance angiography (MRA).
- Number of patients with symptomatic intracranial hemorrhage (sICH a) [ Time Frame: Day 2 ]The safety profile of Tenecteplase is evaluated in terms of number of patients with sICH within 36 hours
- Incidence and severity of adverse events [ Time Frame: From baseline up to day 90 ]The safety profile of Tenecteplase is evaluated in terms of incidence and severity of adverse events.
- Mortality rate up to Day 30 and Day 90 [ Time Frame: Day 30 and Day 90 ]The safety profile of Tenecteplase is evaluated in terms of mortality rate up to Day 30 and Day 90
- Proportion of patients with parenchymal hematoma type 2 (PH2) at the 72-96 hour visit [ Time Frame: Day 3 ]The safety profile of Tenecteplase is evaluated in terms of proportion of patients with PH2 at the 72-96 hour visit
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| Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
| Sexes Eligible for Study: | All |
| Accepts Healthy Volunteers: | No |
Criteria
Inclusion Criteria:
- Patient/legally authorized representative has signed the Informed Consent Form
- Age >= 18 years
- AIS symptom onset within 4.5 to 24 hours Signs and symptoms consistent with the diagnosis of an acute anterior circulation ischemic stroke involving occlusion of the ICA, M1, or M2 vessels
- Functionally independent (mRS 0-2) prior to stroke onset
- Baseline NIHSS >=5 and that remains >=5 immediately prior to randomization
- Neuroimaging: ICA or M1, M2 occlusion (carotid occlusions can be cervical or intracranial, with or without tandem MCA lesions) by magnetic resonance angiography (MRA) or computed tomography angiography (CTA) AND target mismatch profile on CT perfusion or MR perfusion (ischemic core volume <70 mL, mismatch ratio is >=1.8 and mismatch volume is >= 15 mL)
- The mismatch volume is determined by FDA-approved imaging software in real time based on the difference between the ischemic core lesion volume and the Tmax>6s lesion volume. If both a CT perfusion and a multimodal MRI scan are performed prior to enrollment, the later of the 2 scans is assessed to determine eligibility. Only an intracranial MRA is required for patients screened with MRA; cervical MRA is not required. Cervical and intracranial CTA are typically obtained simultaneously in patients screened with CTA, but only the intracranial CTA is required for enrollment.
Alternative neuroimaging:
- If CTA (or MRA) is technically inadequate: Tmax>6s perfusion deficit consistent with an ICA or M1, M2 occlusion AND target mismatch profile (ischemic core volume <70 mL, mismatch ratio >= 1.8 and mismatch volume >= 15 mL as determined by RAPID software)
- If magnetic resonance perfusion (MRP) is technically inadequate: ICA or M1, M2 occlusion (carotid occlusions can be cervical or intracranial; with or without tandem MCA lesions) by MRA (or CTA, if MRA is technically inadequate and a CTA was performed within 60 minutes prior to the MRI) AND diffusion-weighted imaging (DWI) lesion volume <=25 mL for an M1 or ICA occlusion and =<15 mL for an M2 occlusion
- If CTP is technically inadequate: patient can be screened with MRI and randomized if neuroimaging criteria are met.
- Ability to comply with the study protocol, in the investigator's judgment
Exclusion Criteria:
General
- Current participation in another investigational drug or device study
- Active internal bleeding
- Known hypersensitivity or allergy to any ingredients of tenecteplase
- Known bleeding diathesis
- Known hereditary or acquired hemorrhagic diathesis, coagulation factor deficiency; recent oral anticoagulant therapy with INR >1.7
- Use of one of the new oral anticoagulants within the last 48 hours (dabigatran, rivaroxaban, apixaban, edoxaban)
- Pregnant
- Intracranial neoplasm (except small meningioma), arteriovenous malformation, or aneurysm
- Seizures at stroke onset if it precludes obtaining an accurate baseline NIHSS
- Severe, uncontrolled hypertension (systolic blood pressure >180 mmHg or diastolic blood pressure > 110 mmHg)
- For participants with suspected coagulopathy, platelet count must be checked prior to randomization and participant is excluded if baseline platelet count <100,000/microL
- Baseline blood glucose >400 mg/dL (22.20 mmol/L)
- Baseline blood glucose <50 mg/dL needs to be normalized prior to randomization
- Clot retrieval attempted using a neurothrombectomy device prior to randomization
- Intracranial or intraspinal surgery or trauma within 2 months
- Treatment with a thrombolytic within the last 3 months prior to randomization
- Other serious, advanced, or terminal illness (investigator judgment) with life expectancy less than 6 months
- Pre-existing medical, neurological, or psychiatric disease that would confound the neurological or functional evaluations
- History of cerebrovascular accident in the last 90 days
- Presumed septic embolus; suspicion of bacterial endocarditis
- Any other condition that, in the opinion of the investigator, precludes an endovascular procedure or poses a significant hazard to the patient if an endovascular procedure was to be performed
Imaging
- Unable to undergo a contrast brain perfusion scan with either MRI or CT
- Extensive early ischemic change (hypodensity) on non-contrast CT estimated to be >1/3 MCA territory, or significant hypodensity outside the Tmax>6s perfusion lesion that invalidates mismatch criteria (if patient is enrolled based on CT perfusion criteria)
- Significant mass effect
- Acute symptomatic arterial occlusions in more than one vascular territory confirmed on CTA/MRA (e.g., bilateral MCA occlusions, or an MCA and a basilar artery occlusion)
- Evidence of intracranial tumor (except small meningioma) acute intracranial hemorrhage, neoplasm, or arteriovenous malformation
Information from the National Library of Medicine
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03785678
Locations
Show 97 study locations
Sponsors and Collaborators
Genentech, Inc.
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
| Responsible Party: | Genentech, Inc. |
| ClinicalTrials.gov Identifier: | NCT03785678 |
| Other Study ID Numbers: |
ML40787 |
| First Posted: | December 24, 2018 Key Record Dates |
| Last Update Posted: | April 28, 2023 |
| Last Verified: | April 2023 |
| Studies a U.S. FDA-regulated Drug Product: | Yes |
| Studies a U.S. FDA-regulated Device Product: | No |
Additional relevant MeSH terms:
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Tenecteplase Fibrinolytic Agents Fibrin Modulating Agents Molecular Mechanisms of Pharmacological Action |