Evidence map›Paper›PMID 41955072›Full record

Trial reportEuropean stroke journal2026

MRI measurement of the delayed secondary ischaemic injury following endovascular thrombectomy: results from the REPERFUSE-NA1 study.

George S Tadros, Joachim Fladt, Meng Wang, Jen Guo, Jacinta L Specht, Ryan A McTaggart, Richard H Swartz, Thalia S Field, Ruchir Shah, Mayank Goyal and 5 more

Registry-linked trialAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in European stroke journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02930018 (A Multicentre, Randomized, Double-blinded, Placebo-controlled, Parallel Group, Single-dose Design to Determine the Efficacy and Safety of Intravenous NA-1 in Subjects With Acute Ischemic Stroke Undergoing Endovascular Thrombectomy), which is not on this map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT02930018 phase3completednot on this map

A Multicentre, Randomized, Double-blinded, Placebo-controlled, Parallel Group, Single-dose Design to Determine the Efficacy and Safety of Intravenous NA-1 in Subjects With Acute Ischemic Stroke Undergoing Endovascular Thrombectomy

TypeinterventionalSponsorNoNO Inc.Ran2017 to 2019Enrolled1,105ConditionsStroke, AcuteArmsNerinetide (NA-1), 2.6 mg/kg, Placebo
3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors.

George S TadrosCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Joachim FladtCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Meng WangCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Jen GuoCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Jacinta L SpechtCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Ryan A McTaggartDepartment of Neurology and Neurosurgery, Rhode Island Medical Imaging, 593 Eddy St APC 6 Providence, RI 02903, United States.
Richard H SwartzDepartment of Medical Imaging, University of Toronto, Sunnybrook Health Sciences Centre, Toronto, Canada.
Thalia S FieldVancouver Stroke Program, University of British Columbia, Vancouver, Canada.
Ruchir ShahUT Erlanger Neurology, Chattanooga, TN, United States.
Mayank GoyalCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Michael D HillCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Andrew M DemchukCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Michael TymianskiNoNO Inc., Toronto, ON, Canada.
Christopher D d'EsterreCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.
Philip A BarberCalgary Stroke Program, Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Canada.ORCID 0000-0002-6051-1078

Funding

CIHR 2017-2021
6 · The paper itself

Abstract

backgroundBrain injury due to stroke is an important determinant of long-term disability. The acute lesion visible on MRI with DWI underestimates the total burden of the ischaemic injury. The objectives of this study are: (1) quantify the delayed secondary ischaemic injury volume by calculating the whole and regional brain volume loss at 90-days post-stroke and (2) determine whether brain volume loss independently predicted functional outcome at 90 days.

methodsREPERFUSE-NA1 is a prospective, multisite MRI sub-study of the ESCAPE-NA1 trial (ClinicalTrialGov #NCT02930018), which randomised participants receiving endovascular therapy (EVT) to nerinetide versus placebo. MRI was acquired immediately after therapy (day 1, <5 hours post-EVT) and at 90-days. The primary outcome was change in whole-brain volume between day 1 and 90. Serial MR metrics were used to generate sample size calculations for future neuroprotectant trials.

resultsA total of 43 patients of mean age 65.1 years (SD = 14.9, 51.2% female, median NIHSS 15 [Q1-Q3 = 11-20]) were included. In the entire cohort, there was significant whole-brain volume loss (P < .001), ventricular enlargement (P < .001), and cortical grey matter (P = .001), subcortical white matter (P < .001), thalamic (P < .001), and hippocampal (P < .001) volume loss in the ipsilateral hemisphere. Baseline DWI volume and ipsilateral hemispheric brain atrophy were significant predictors of functional independence, with P-values of < .001. There was no significant association between nerinetide treatment and volume changes at 90-days. For a prospective 90-day neuroprotectant trial to demonstrate 50% reduction, 41 patients per group would be needed using ventricular volume change.

conclusionThis study indicates that whole-brain volume loss is a feasible measurement of delayed secondary ischaemic injury. Future neuroprotectant clinical trials could utilise MR-based markers of delayed ischaemic injury.

Indexed as

Brain IschemiaEndovascular ProceduresMagnetic Resonance ImagingStrokeThrombectomyAgedBrainFemaleHumansMaleMiddle AgedProspective Studiesacute ischaemic strokedelayed secondary ischaemic injuryEVTneuroprotection

Identifiers

PMID41955072
PMCPMC13069884

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.