NCT04521881

Brief Summary

Tranexamic acid (TXA) reduces head injury deaths. The CRASH-4 trial aims to assess the effects of early intramuscular TXA on intracranial haemorrhage, disability, death, and dementia in older adults with symptomatic mild head injury

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
5,000

participants targeted

Target at P75+ for phase_3

Timeline
21mo left

Started Apr 2021

Longer than P75 for phase_3

Geographic Reach
1 country

2 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress74%
Apr 2021Jan 2028

First Submitted

Initial submission to the registry

August 18, 2020

Completed
3 days until next milestone

First Posted

Study publicly available on registry

August 21, 2020

Completed
8 months until next milestone

Study Start

First participant enrolled

April 18, 2021

Completed
5.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2026

Expected
1.1 years until next milestone

Study Completion

Last participant's last visit for all outcomes

January 31, 2028

Last Updated

March 12, 2026

Status Verified

March 1, 2026

Enrollment Period

5.7 years

First QC Date

August 18, 2020

Last Update Submit

March 9, 2026

Conditions

Keywords

Traumatic brain injury, tranexamic acid, older adults

Outcome Measures

Primary Outcomes (1)

  • Emergency department discharge

    discharge

    within 24 hours

Secondary Outcomes (15)

  • Intracranial bleeding on CT scan

    within 48 hours

  • Head injury related death

    within 48 hours

  • All cause mortality

    within 28 days

  • Disability

    within 28 days

  • Global assessment of ability to self-care

    within 28 days

  • +10 more secondary outcomes

Study Arms (2)

Active

ACTIVE COMPARATOR

A single dose of Tranexamic acid 500mg given by intramuscular injection

Drug: Tranexamic Acid 500 MG

Placebo

PLACEBO COMPARATOR

One Injection of the placebo which is 10 mL Sodium Chloride (0.9%)

Drug: Tranexamic Acid 500 MG

Interventions

given once as an intramuscular injection

ActivePlacebo

Eligibility Criteria

Age50 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • years or older (actual or estimated)
  • History or evidence of head injury (e.g. laceration, bruise, swelling or pain in head or face)
  • GCS ≥ 13
  • Has one or more of the following:
  • has or had any impaired consciousness (loss of consciousness, amnesia, or confusion)
  • nausea or vomiting
  • Within 3 hours of injury (do not include if interval cannot be estimated e.g. patient unable to confirm time of fall or patient found on floor after an unwitnessed fall and home alone)
  • Not living in a nursing home, mental health institution or prison
  • Patient will be conveyed to or is admitted to a participating hospital

You may not qualify if:

  • \- TXA not clearly indicated (e.g. major bleeding) or contraindicated (e.g. suspected stroke)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

The Royal London Hospital

London, London, E1 1FR, United Kingdom

RECRUITING

St George's Hospital

London, London, SW17 0QT, United Kingdom

RECRUITING

Related Links

MeSH Terms

Conditions

Brain Injuries, Traumatic

Interventions

Tranexamic Acid

Condition Hierarchy (Ancestors)

Brain InjuriesBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesCraniocerebral TraumaTrauma, Nervous SystemWounds and Injuries

Intervention Hierarchy (Ancestors)

Cyclohexanecarboxylic AcidsAcids, CarbocyclicCarboxylic AcidsOrganic Chemicals

Study Officials

  • Haleema Shakur-Still

    London School of Hygiene and Tropical Medicine

    STUDY CHAIR
  • Ian Roberts

    London School of Hygiene and Tropical Medicine

    STUDY CHAIR

Central Study Contacts

Haleema Shakur-Still

CONTACT

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Masking will be done by an independent clinical trials supply company. It will involve the removal of the original manufacturer's label and replacement with the clinical trial label bearing the randomisation number, which will be used as the pack identification. Apart from the randomisation number, all pack label texts will be identical for tranexamic acid and placebo.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: A randomised, double blind, placebo controlled trial among 10,000 older adults with mild traumatic brain injury.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 18, 2020

First Posted

August 21, 2020

Study Start

April 18, 2021

Primary Completion (Estimated)

December 31, 2026

Study Completion (Estimated)

January 31, 2028

Last Updated

March 12, 2026

Record last verified: 2026-03

Data Sharing

IPD Sharing
Will share

Data will be shared publicly when all planned analyses are completed by the CRASH-4 Trial Collaborators. This will be hosted on freebird.lshtm.ac.uk

Shared Documents
STUDY PROTOCOL, SAP, ICF
Access Criteria
Totally anonymised data (without random allocation, patient, country and site identifiers) will be freely available.Where random allocation codes, country/site identifiers are requested, appropriate pre-specified analysis plan will need to be submitted to the Trial Management Group for review and if necessary, appropriate Ethics Committee approval will be required.
More information

Locations