Evidence map›Paper›PMID 22129158›Full record

Trial reportTrials2011

Update on the third international stroke trial (IST-3) of thrombolysis for acute ischaemic stroke and baseline features of the 3035 patients recruited.

Peter Sandercock, Richard Lindley, Joanna Wardlaw, Martin Dennis, Karen Innes, Geoff Cohen, Will Whiteley, David Perry, Vera Soosay, David Buchanan and 20 more

Open access · goldAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Trials, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
5.0field-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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

  1. Thrombolysis for acute ischaemic stroke.The Cochrane database of systematic reviews · 2014
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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

30 authors at 14 institutions in 12 countries.

Peter SandercockThe IST-3 Co-ordinating Centre, Neurosciences Trial Unit, Bramwell Dott Building, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK. Peter.Sandercock@ed.ac.uk
Richard Lindley
Joanna Wardlaw
Martin Dennis
Karen Innes
Geoff Cohen
Will Whiteley
David Perry
Vera Soosay
David Buchanan
Graham Venables
Anna Czlonkowska
Adam Kobayashi
Eivind Berge
Karsten Bruins Slot
Veronica Murray
Andre Peeters
Graeme J Hankey
Karl Matz
Michael Brainin
Stefano Ricci
Teresa A Cantisani
Gordon Gubitz
Stephen J Phillips
Arauz Antonio
Manuel Correia
Phillippe Lyrer
Ingrid Kane
Erik Lundstrom
IST-3 collaborative group
Western General Hospital · GBDalhousie University · CAOslo University Hospital · NOCliniques Universitaires Saint-Luc · BEMedical University of Warsaw · PLUppsala University Hospital · SEAzienda Ospedaliera di Perugia · ITCittà di Castello Hospital · ITHospital de Santo António · PTRoyal Perth Hospital · AURoyal Sussex County Hospital · GBThe George Institute for Global Health · GBUniversitätsklinikum Tulln · ATUniversity Hospital of Basel · CH

Funding

Chief Scientist OfficeMedical Research Council G0400069Medical Research Council G0800803Medical Research Council G0902303
6 · The paper itself

Abstract

backgroundIntravenous recombinant tissue plasminogen activator (rtPA) is approved in Europe for use in patients with acute ischaemic stroke who meet strictly defined criteria. IST-3 sought to improve the external validity and precision of the estimates of the overall treatment effects (efficacy and safety) of rtPA in acute ischaemic stroke, and to determine whether a wider range of patients might benefit.

designInternational, multi-centre, prospective, randomized, open, blinded endpoint (PROBE) trial of intravenous rtPA in acute ischaemic stroke. Suitable patients had to be assessed and able to start treatment within 6 hours of developing symptoms, and brain imaging must have excluded intracranial haemorrhage and stroke mimics.

resultsThe initial pilot phase was double blind and then, on 01/08/2003, changed to an open design. Recruitment began on 05/05/2000 and closed on 31/07/2011, by which time 3035 patients had been included, only 61 (2%) of whom met the criteria for the 2003 European approval for thrombolysis. 1617 patients were aged over 80 years at trial entry. The analysis plan will be finalised, without reference to the unblinded data, and published before the trial data are unblinded in early 2012. The main trial results will be presented at the European Stroke Conference in Lisbon in May 2012 with the aim to publish simultaneously in a peer-reviewed journal. The trial result will be presented in the context of an updated Cochrane systematic review. We also intend to include the trial data in an individual patient data meta-analysis of all the relevant randomised trials.

conclusionThe data from the trial will: improve the external validity and precision of the estimates of the overall treatment effects (efficacy and safety) of iv rtPA in acute ischaemic stroke; provide: new evidence on the balance of risk and benefit of intravenous rtPA among types of patients who do not clearly meet the terms of the current EU approval; and, provide the first large-scale randomised evidence on effects in patients over 80, an age group which had largely been excluded from previous acute stroke trials.

trial registrationISRCTN25765518.

Indexed as

Thrombolytic TherapyAcute DiseaseBrain IschemiaDouble-Blind MethodFibrinolytic AgentsHumansProspective StudiesSample SizeStrokeTissue Plasminogen ActivatorFibrinolytic AgentsTissue Plasminogen Activator

Identifiers

PMID22129158
PMCPMC3286387
OpenAlexW2093060998

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.