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Collateral-based reSetting of Endovascular Treatment Time Window for Stroke (CoSETS)

Acute Ischemic Stroke Clinical Trial

Official title:
Collateral-based reSetting of Endovascular Treatment Time Window for Stroke (CoSETS)

Clinical Trial Summary

This study is a prospective, partly randomized, multi-center, Phase III, controlled trial, designed to show that the onset-to-puncture time (OPT) for good functional outcome (defined by modified Rankin Scale score at 3 months, 0-2) can be set depending on collateral status based on multiphase CT angiogram. The purpose of this study is to prove that (1) for patients with poor collaterals, there will no difference in good outcome rate between endovascular treatment and best medical treatment group if onset-to-puncture time is between 150 minutes and 600 minutes, and 2) for patients wih good collaterals, the rate of good outcome is equal to or greater than 42% (10% greater than historical control) if onset-to-puncture time is between 150 minutes and 600 minutes. Patients will initially be classified into 3 arms based on both collateral status on multiphase CT angiography and whether or not receiving endovascular thrombectomy: group 1, patients with good collaterals and receiving endovascular thrombectomy, 2) group 2a, patient with poor collaterals and receiving endovascular thrombectomy, and 3) group 2b, patients with poor collaterals and not receiving endovascular thrombectomy. Patients with good collaterals will receive endovascular thrombectomy (EVT) if onset-to-puncture time is between 150 minutes and 600 minutes after last seen well time. Of the patients with poor collaterals, they will be randomized into endovascular treatment and best medical treatment group, if onset-to-puncture time is between 150 minutes and 600 minutes, (onset-to-puncture time is not possible within 150 minutes but possible within 600 minutes after last seen well). Primary endpoint is the rate of good outcome at 3 months. The number of subjects needed with statistical power of 0.8 and alpha value of 0.025 is estimated 309 patients.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03234634
Study type Interventional
Source Yonsei University
Contact
Status Terminated
Phase N/A
Start date August 13, 2018
Completion date May 20, 2019
View Details
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