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Large Artery occlusion Treated in Extended Time with Mechanical Thrombectomy (LATE-MT): Protocol for a multicenter randomized clinical trial

delete2026-05-30
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PRE
AI
H
Hongjian Shen
P
Pengfei Yang
Y
Yongwei Zhang
X
Xiaoxi Zhang
Y
Yang Zhao
L
Lijun Wang
P
Pengfei Xing
L
Lei Zhang
C
Craig S Anderson
J
Jianmin Liu
DOI:10.1177/17474930261458848delete
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Abstract

Abstract

En 中文
<jats:sec> <jats:title>Background:</jats:title> <jats:p>High-quality randomized controlled trials (RCTs) have extended the endovascular therapy (EVT) time window to 24 h post-stroke onset in selected patients with acute ischemic stroke (AIS). Recent retrospective studies indicate that EVT performed beyond 24 h may still improve clinical outcomes. However, the specific benefit–risk profile in this ultra-late window remains unclear.</jats:p> </jats:sec> <jats:sec> <jats:title>Aim:</jats:title> <jats:p>The trial is designed to address this evidence gap and determine the benefit–risk balance of EVT in the ultra-late window.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods and design:</jats:title> <jats:p>The Large Artery occlusion Treated in Extended Time with Mechanical Thrombectomy (LATE-MT) is an investigator-initiated, multicenter, prospective, randomized, open, blinded-endpoint assessment (PROBE) clinical trial. The trial adopted an adaptive group-sequential design, recruiting 336 AIS patients with large-vessel occlusion within 24–72 h of the last known well across 35 stroke centers in China. Eligible subjects who meet both clinical and imaging selection criteria are randomized 1:1 to EVT or medical management.</jats:p> </jats:sec> <jats:sec> <jats:title>Outcomes:</jats:title> <jats:p>The primary outcome is an ordinal shift analysis of scores on the modified Rankin scale (mRS) at 90 days. Key secondary outcomes include neurological function at 24 h and 7 days, death/major disability, and utility-weighted mRS (UW-mRS) at 90 days. Safety outcomes include any intracranial hemorrhage (ICH), symptomatic ICH, serious adverse event, and all procedural complications.</jats:p> </jats:sec>

Journal

International Journal of Stroke cover
International Journal of Stroke
IF:
8.7
Papers:
3.0K
Citations:
8.4K

Organization

F
fudan university
Scholars:
11.3W
Papers: 7.6W
Citations: 121
U
university of new south wales
Scholars:
2.4K
Papers: 1.2K
Citations: 0
N
naval medical university
Scholars:
4.7K
Papers: 1.4K
Citations: 175
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