Evidence map›Paper›PMID 33940954›Full record

Trial reportStroke2021

Carotid Stenosis and Recurrent Ischemic Stroke: A Post-Hoc Analysis of the POINT Trial.

Shadi Yaghi, Adam de Havenon, Sara Rostanski, Alexandra Kvernland, Brian Mac Grory, Karen L Furie, Anthony S Kim, J Donald Easton, S Claiborne Johnston, Nils Henninger

Registry-linked trialOpen access · bronzeAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Stroke, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03354429 (A Randomised, Double-Blind, Placebo-Controlled, International, Multicentre, Phase III Study to Investigate the Efficacy and Safety of Ticagrelor and ASA Compared With ASA in the Prevention of Stroke and Death in Patients With Acute Ischaemic Stroke or Transient Ischaemic Attack), which is not on this map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
4.1field-weighted citation impact, top 5% of its field
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.

NCT03354429 phase3completednot on this map

A Randomised, Double-Blind, Placebo-Controlled, International, Multicentre, Phase III Study to Investigate the Efficacy and Safety of Ticagrelor and ASA Compared With ASA in the Prevention of Stroke and Death in Patients With Acute Ischaemic Stroke or Transient Ischaemic Attack

TypeinterventionalSponsorAstraZenecaRan2018 to 2019Enrolled11,016ConditionsAcute Ischaemic Stroke, Transient Ischaemic AttackArmsTicagrelor, Placebo
3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 39 citations in OpenAlex.

  1. Trial
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  9. Review
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  11. Impact of cerebral collateral flow on stroke outcomes after carotid stenting.Annals of clinical and translational neurology · 2023
    Article
  12. Observational
  13. Article
  14. Article
  15. Article
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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

10 authors at 7 institutions in 1 country.

Shadi YaghiNYU Grossman School of Medicine, NY (S.Y., S.R., A.K.).
Adam de HavenonDepartment of Neurology, University of Utah Medical Center, Salt Lake City (A.d.H.).
Sara RostanskiNYU Grossman School of Medicine, NY (S.Y., S.R., A.K.).
Alexandra KvernlandNYU Grossman School of Medicine, NY (S.Y., S.R., A.K.).
Brian Mac GroryDepartment of Neurology, Duke University, Durham, NC (B.M.G.).
Karen L FurieDepartment of Neurology, Brown University, Providence, RI (K.L.F.).
Anthony S KimDepartment of Neurology, University of California, San Francisco (A.S.K., J.D.E.).
J Donald EastonDepartment of Neurology, University of California, San Francisco (A.S.K., J.D.E.).
S Claiborne JohnstonDean's Office, Dell Medical School, The University of Texas at Austin (S.C.J.).
Nils HenningerDepartment of Neurology and Department of Psychiatry, University of Massachusetts Medical Center, Worcester (N.H.).
NYU Langone Health · USUniversity of California, San Francisco · USBrown University · USDuke University · USThe University of Texas at Austin · USUniversity of Massachusetts Chan Medical School · USUniversity of Utah · US

Funding

Treatment Targets for Inflamed Intracranial Atherosclerosis on Vessel Wall MRIK23NS105924 · NINDS · YALE UNIVERSITY · PI DE HAVENON, ADAM H. · 2019 to 2023
$988k
Inhibiting axon degeneration in a mouse model of acute brain injury through deletion of Sarm1K08NS091499 · NINDS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI HENNINGER, NILS · 2016 to 2020
$919k
NINDS NIH HHS K08 NS091499NINDS NIH HHS K23 NS105924
6 · The paper itself

Abstract

background and purposeRandomized trials demonstrated the benefit of dual antiplatelet therapy in patients with minor ischemic stroke or high-risk transient ischemic attack. We sought to determine whether the presence of carotid stenosis was associated with increased risk of ischemic stroke and whether the addition of clopidogrel to aspirin was associated with more benefit in patients with versus without carotid stenosis.

methodsThis is a post-hoc analysis of the POINT trial (Platelet-Oriented Inhibition in New TIA and Minor Ischemic Stroke) that randomized patients with minor ischemic stroke or high-risk transient ischemic attack within 12 hours from last known normal to receive either clopidogrel plus aspirin or aspirin alone. The primary predictor was the presence of ≥50% stenosis in either cervical internal carotid artery. The primary outcome was ischemic stroke. We built Cox regression models to determine the association between carotid stenosis and ischemic stroke and whether the effect of clopidogrel was modified by ≥50% carotid stenosis.

resultsAmong 4881 patients enrolled POINT, 3941 patients met the inclusion criteria. In adjusted models, ≥50% carotid stenosis was associated with ischemic stroke risk (hazard ratio, 2.45 [95% CI, 1.68-3.57],

conclusionsThe presence of carotid stenosis was associated with increased risk of ischemic stroke during follow-up. The effect of added clopidogrel was not significantly different in patients with versus without carotid stenosis. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT03354429.

Indexed as

AgedAged, 80 and overAspirinBrain IschemiaCarotid StenosisClopidogrelDual Anti-Platelet TherapyFemaleFollow-Up StudiesHumansMaleMiddle AgedPlatelet Aggregation InhibitorsRecurrenceRetrospective StudiesStrokeAspirinClopidogrelPlatelet Aggregation Inhibitorsaspirincarotid stenosisclopidogrelischemic strokeproportional hazards models

Identifiers

PMID33940954
PMCPMC8268075
OpenAlexW3158911787

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.