Evidence map›Paper›PMID 33172504›Full record

Trial reportCritical care (London, England)2020

Understanding the neuroprotective effect of tranexamic acid: an exploratory analysis of the CRASH-3 randomised trial.

Amy Brenner, Antonio Belli, Rizwana Chaudhri, Timothy Coats, Lauren Frimley, Sabariah Faizah Jamaluddin, Rashid Jooma, Raoul Mansukhani, Peter Sandercock, Haleema Shakur-Still and 3 more

Registry-linked trialOpen access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Critical care (London, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01402882 (Tranexamic Acid for the Treatment of Significant Traumatic Brain Injury), which is not on this map. Cited by 12 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 3 pooled it
2.4field-weighted citation impact, top 11% 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.

NCT01402882 phase3completednot on this map

Tranexamic Acid for the Treatment of Significant Traumatic Brain Injury: an International Randomised, Double Blind Placebo Controlled Trial

TypeinterventionalSponsorLondon School of Hygiene and Tropical MedicineRan2012 to 2019Enrolled12,737ConditionsTraumatic Brain InjuryArmsTranexamic Acid
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 3 syntheses or guidelines pooled it, 50 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. The effect of prehospital tranexamic acid on outcome in polytrauma patients with associated severe brain injury.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2022
    Article
  11. Review
  12. Article
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

13 authors at 4 institutions in 4 countries.

Amy BrennerLondon School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK. Amy.Brenner@lshtm.ac.uk.ORCID 0000-0003-2017-5994
Antonio BelliCollege of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
Rizwana ChaudhriGlobal Institute of Human Development, Shifa Tameer-e-Millat University, Rawalpindi, Pakistan.
Timothy CoatsDepartment of Cardiovascular Sciences, University of Leicester, University Road, Leicester, LE1 7RH, UK.
Lauren FrimleyLondon School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
Sabariah Faizah JamaluddinDepartment of Emergency Medicine, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Shah Alam, Malaysia.
Rashid JoomaDepartment of Surgery, Aga Khan University Hospital, Karachi, 74800, Pakistan.
Raoul MansukhaniLondon School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
Peter SandercockCentre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, EH16 4SB, UK.
Haleema Shakur-StillLondon School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
Temitayo ShokunbiUniversity College Hospital, Ibadan, Nigeria.
Ian RobertsLondon School of Hygiene & Tropical Medicine, Keppel Street, London, WC1E 7HT, UK.
CRASH-3 trial collaborators
University of London · GBAga Khan University Hospital · PKShifa Tameer-e-Millat University · PKUniversity of Leicester · GB

Funding

Department of Health 06/303/20Department of Health 14/190/01Health Technology Assessment Programme 14/190/01J P Moulton Charitable Foundation n/aMedical Research Council MR/M009211/1the Joint Global Health Trials, Medical Research Council, Department for International Development, Global Challenges Research Fund, and the Wellcome Trust MRM0092111Wellcome Trust
6 · The paper itself

Abstract

backgroundThe CRASH-3 trial hypothesised that timely tranexamic acid (TXA) treatment might reduce deaths from intracranial bleeding after traumatic brain injury (TBI). To explore the mechanism of action of TXA in TBI, we examined the timing of its effect on death.

methodsThe CRASH-3 trial randomised 9202 patients within 3 h of injury with a GCS score ≤ 12 or intracranial bleeding on CT scan and no significant extracranial bleeding to receive TXA or placebo. We conducted an exploratory analysis of the effects of TXA on all-cause mortality within 24 h of injury and within 28 days, excluding patients with a GCS score of 3 or bilateral unreactive pupils, stratified by severity and country income. We pool data from the CRASH-2 and CRASH-3 trials in a one-step fixed effects individual patient data meta-analysis.

resultsThere were 7637 patients for analysis after excluding patients with a GCS score of 3 or bilateral unreactive pupils. Of 1112 deaths, 23.3% were within 24 h of injury (early deaths). The risk of early death was reduced with TXA (112 (2.9%) TXA group vs 147 (3.9%) placebo group; risk ratio [RR] RR 0.74, 95% CI 0.58-0.94). There was no evidence of heterogeneity by severity (p = 0.64) or country income (p = 0.68). The risk of death beyond 24 h of injury was similar in the TXA and placebo groups (432 (11.5%) TXA group vs 421 (11.7%) placebo group; RR 0.98, 95% CI 0.69-1.12). The risk of death at 28 days was 14.0% in the TXA group versus 15.1% in the placebo group (544 vs 568 events; RR 0.93, 95% CI 0.83-1.03). When the CRASH-2 and CRASH-3 trial data were pooled, TXA reduced early death (RR 0.78, 95% CI 0.70-0.87) and death within 28 days (RR 0.88, 95% CI 0.82-0.94).

conclusionsTranexamic acid reduces early deaths in non-moribund TBI patients regardless of TBI severity or country income. The effect of tranexamic acid in patients with isolated TBI is similar to that in polytrauma. Treatment is safe and even severely injured patients appear to benefit when treated soon after injury.

trial registrationISRCTN15088122 , registered on 19 July 2011; NCT01402882 , registered on 26 July 2011.

Indexed as

Protective FactorsAntifibrinolytic AgentsBrain InjuriesHumansMultiple TraumaNeuroprotective AgentsTranexamic AcidAntifibrinolytic AgentsNeuroprotective AgentsTranexamic AcidCRASH-3 trialEmergence careEpidemiologyIntracranial haemorrhageRandomised controlled trialTranexamic acidTraumatic brain injury

Identifiers

PMID33172504
PMCPMC7657351
OpenAlexW3104940515

What OpenQuestion holds

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LicenceCC BY
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.