NCT07115940 · Amrou Sarraj
Medical Management With Endovascular Thrombectomy Versus Medical Management Alone in Patients Presenting Beyond 24 Hours of Last Known Well
(SELECT LATE)
What this study is about
SELECT LATE trial aims to evaluate if addition of endovascular thrombectomy to medical management in patients presenting with acute ischemic stroke and a proximal large vessel occlusion in the anterior circulation between 24 and 72 hours of stroke onset results in achieving better functional outcomes (measured using modified Rankin Scale Scores) at 90-day follow-up (± 15 days).
View original scientific description
SELECT LATE trial aims to evaluate if addition of endovascular thrombectomy to medical management in patients presenting with acute ischemic stroke and a proximal large vessel occlusion in the anterior circulation between 24 and 72 hours of stroke onset results in achieving better functional outcomes (measured using modified Rankin Scale Scores) at 90-day follow-up (± 15 days).
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- General Inclusion Criteria:
- Adults (18-85\
- years) with the final diagnosis of an acute ischemic stroke$
- Time from last-known-well to randomization \>24 - 72 hours
- Pre-stroke modified Rankin Scale score of 0-1
- Eligible for thrombectomy and medical management
- Signed Informed Consent obtained
- Subject willing to comply with the protocol follow-up requirements
- Anticipated life expectancy of at least 3 months \*Inclusive of both 18 and 85 years of age (i.e. up to 86th birthdate). $Subacute presentation - In-hospital stroke admissions with fluctuating clinical symptoms for patients who presented to EVT centers within 24 hours of when they were last known well will not be eligible for the trial. General
Exclusion criteria
- Current participation in another investigational interventional drug or device study.
- Baseline Platelet count \<100,000/μl Imaging Inclusion Criteria
- Proven large vessel occlusion in ICA or MCA-M1 occlusion (carotid occlusions can be cervical or intracranial, with or without tandem MCA lesions), as determined by MR Angiography (MRA) or CT Angiography (CTA)
- CT ASPECTS 3-10
- CT Perfusion ischemic core (rCBF \<30%)# volume ≤150 ml OR MR Diffusion ischemic core (ADC \<620x10-6 mm2/s)# volume ≤150ml #If the perfusion software at enrollment center uses another threshold/measure to define ischemic core, please use that measure to assess ischemic core criteria. Imaging Exclusion Criteria
- Evidence of intracranial tumor (except small meningioma \<3cm without signs of edema or inflammation), acute intracranial hemorrhage, or arteriovenous malformation
- Significant mass effect, defined as midline shift (\>3mm) using foramen of monroe (anterior margin of third ventricle) as the marker for midline instead of septum pellucidum AND/OR Effacement of sulci in contralateral hemisphere
- Evidence of internal carotid artery dissection that is flow limiting or aortic dissection
- Intracranial stent implanted in the same vascular territory that precludes the safe deployment/removal of the neurothrombectomy device
- 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).
- Any signs of established infarct, demarcating hypodensity and area of cerebral edema on non-contrast CT
- CT ASPECTS 0-2
- CT Perfusion ischemic core (rCBF \<30%)# volume \>150 ml OR MR Diffusion ischemic core (ADC \<620x10-6 mm2/s)# volume \>150ml #If the perfusion software at enrollment center uses another threshold/measure to define ischemic core, please use that measure to assess ischemic core criteria.
Where
- Chicago, Illinois
- Kansas City, Kansas
- St Louis, Missouri
- Providence, Rhode Island
- Dallas, Texas
- Morgantown, West Virginia
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 6, 2026 · Source of record for eligibility and locations