NCT05713630

Brief Summary

Subdural hematoma (SDH) is a common condition experienced after head injury. Blood collects on the surface of the brain, causing headaches which can progress to confusion, weakness, or even coma. While patients with SDH often receive surgery, not all patients require surgery right away to ease pressure on the brain. After surgery, there can be up to 30 percent chance of more bleeding and the need for more surgeries. Given this, a drug capable of lowering the chance of more bleeding and speeding the recovery of the patient is highly desirable. In this study, we will test a commonly used, cheap drug called Tranexamic Acid (TXA). While the body stops unwanted and sometimes dangerous bleeding naturally by forming blood clots, TXA stops these blood clots from breaking down, which helps to keep bleeding spots plugged. Our previous study showed that TXA helped speed up patients' recovery; but a larger number of patients is necessary to evaluate how well TXA works to reduce bleeding and improve patient-reported outcomes. In this study, regardless of the need for surgery, half of the patients will be randomly assigned to take TXA, while the other half will take a placebo, which is a look-alike substance that contains no active drug. We will measure multiple outcomes over time to determine if TXA is working and lowers healthcare and personal costs, while also taking blood and surgical samples, to better understand how this drug works in SDH patients.

Trial Health

63
Monitor

Trial Health Score

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

Enrollment
130

participants targeted

Target at P25-P50 for phase_3

Timeline
57mo left

Started Sep 2025

Longer than P75 for phase_3

Geographic Reach
1 country

1 active site

Status
not yet 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 Progress11%
Sep 2025Dec 2030

First Submitted

Initial submission to the registry

January 26, 2023

Completed
11 days until next milestone

First Posted

Study publicly available on registry

February 6, 2023

Completed
2.6 years until next milestone

Study Start

First participant enrolled

September 30, 2025

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 30, 2027

Expected
3.8 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2030

Last Updated

July 1, 2025

Status Verified

June 1, 2025

Enrollment Period

1.5 years

First QC Date

January 26, 2023

Last Update Submit

June 26, 2025

Conditions

Keywords

symptomatic subdural hematomatranexamic acidTXAclinical trialneurosurgery

Outcome Measures

Primary Outcomes (1)

  • European Quality of Life 5 Dimensions 5 Level Version (EQ-5D-5L)

    A self-rated questionnaire that assesses a patient's health state in five dimensions: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression.

    Every 2 weeks after randomization up to 45±10 days.

Secondary Outcomes (16)

  • Patient-Reported Outcomes Measurement Information System (PROMIS) Scale v1.2 - Global Health. English and French versions

    Baseline and every 2 weeks after randomization up to 45±10 days, and then at 60-90 days, and 180±10 days after randomization.

  • PROMIS Item Bank v2.0 - Cognitive Function. English version

    Baseline and every 2 weeks after randomization up to 45±10 days, and then at 60-90 days, and 180±10 days after randomization.

  • PROMIS Item Bank v2.0 - Physical Function. English version

    Baseline and every 2 weeks after randomization up to 45±10 days, and then at 60-90 days, and 180±10 days after randomization.

  • PROMIS Item Bank v2.0 - Ability to Participate in Social Roles and Activities. English version

    Baseline and every 2 weeks after randomization up to 45±10 days, and then at 60-90 days, and 180±10 days after randomization.

  • Subdural hematoma volume change

    Baseline, 45±10 days after randomization, and 60-90 days if deemed necessary for the patient's routine care.

  • +11 more secondary outcomes

Study Arms (2)

Standard care + TXA

ACTIVE COMPARATOR

Patients will be given a single oral or IV loading dose of TXA within three hours of being randomized or whenever possible prior to surgery. Patients who are able to swallow will be given an oral loading dose of 1g TXA. Patients who are unable to swallow will be given an IV loading dose of 1g TXA which will be added to a 100mL infusion bag of NaCl 0.9% and infused by slow intravenous injection over 20 minutes as per the recommended rate of administration in the Product Monograph for Sandoz-Tranexamic Acid Injection BP. After 12 hours of the loading dose, patients will be given 500mg TXA by mouth (or 500mg TXA in NaCl 0.9% 100mL by IV for those unable to swallow) three times daily, totalling 1500mg/day, for 45 days.

Drug: Tranexamic acid (TXA)

Standard care + placebo

PLACEBO COMPARATOR

Patients will be given a single oral or IV loading dose of placebo within three hours of being randomized or whenever possible prior to surgery. Patients who are able to swallow will be given an oral loading dose of 1g placebo (gelatin capsule composed of microcrystalline cellulose 105 powder NF). Patients who are unable to swallow will be given an IV loading dose of 1g placebo (sodium chloride also known as NaCl 0.9%) which will be added to a 100mL infusion bag of NaCl 0.9% and infused by slow intravenous injection over 20 minutes. After 12 hours of the loading dose, patients will be given 500mg placebo by mouth (or IV for those unable to swallow) three times a day, totalling 1500mg/day, for 45 days.

Drug: Placebo

Interventions

Marcan-Tranexamic Acid 500 mg oral tablet over-encapsulated to match the placebo. Sandoz-Tranexamic Acid 100 mg/mL solution for injection via intravenous (IV) added to a 100mL infusion bag of NaCl 0.9% and infused by slow intravenous injection over 20 minutes.

Also known as: Cyklokapron
Standard care + TXA

Placebo 500 mg consisting of an identical capsule to over-encapsulated tranexamic acid oral tablet entirely filled with microcrystalline cellulose, and sealed. Placebo 100 mg/mL solution for injection via intravenous (IV) consisting of 0.9% sodium chloride (saline).

Standard care + placebo

Eligibility Criteria

Age45 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may not qualify if:

  • \- Patients will be excluded for any of the following conditions:
  • Asymptomatic for longer than 72 hours
  • SDH less than 8 mm in maximal thickness
  • Have an acutely deteriorating neurological status (e.g., brain herniation with pupillary dilation, aneurysm rupture, etc.) that is likely to be fatal within 6 hours or less due to a predominantly acute SDH
  • Presence of brain contusion larger than 5 cubic centimeters or subarachnoid hemorrhage (SAH) thicker than 10 mm with Glasgow Coma Scale (GCS)\< 13
  • Patients with primarily interhemispheric or tentorial SDH
  • Hypersensitivity to TXA or any of the placebo ingredients
  • Pregnancy
  • Irregular menstrual bleeding with unidentified cause
  • Known acquired colour vision disturbances
  • Hematuria caused by renal parenchymal disease
  • Acute and chronic renal insufficiency indicated by estimated Glomerular Filtration Rate (eGFR) ≤ 30 mL/min
  • Concomitant intake of birth control pill and/or hormonal replacement therapy, and anti-inhibitor coagulant concentrates (factor VIII inhibitor bypass activity (FEIBA), factor VII, activated factor IX)
  • Consumption coagulopathy/disseminated intravascular coagulation (DIC) in the last 7 days
  • Not competent to take study medication properly and regularly or not having access to caregiver that is able to comply with study medication administration
  • +9 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

St. Michael's Hospital

Toronto, Ontario, M5B1T8, Canada

Location

Related Publications (68)

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Related Links

MeSH Terms

Conditions

Hematoma, Subdural

Interventions

Tranexamic Acid

Condition Hierarchy (Ancestors)

Intracranial Hemorrhage, TraumaticIntracranial HemorrhagesCerebrovascular DisordersBrain DiseasesCentral Nervous System DiseasesNervous System DiseasesCraniocerebral TraumaTrauma, Nervous SystemVascular DiseasesCardiovascular DiseasesHematomaHemorrhagePathologic ProcessesPathological Conditions, Signs and SymptomsWounds and Injuries

Intervention Hierarchy (Ancestors)

Cyclohexanecarboxylic AcidsAcids, CarbocyclicCarboxylic AcidsOrganic Chemicals

Study Officials

  • Michael D Cusimano, MD, PhD

    Unity Health Toronto

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Michael D Cusimano, MD, PhD

CONTACT

Melissa C Fazari, MSc

CONTACT

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Research Assistant Research Coordinator
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Vanguard trial
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 26, 2023

First Posted

February 6, 2023

Study Start

September 30, 2025

Primary Completion (Estimated)

March 30, 2027

Study Completion (Estimated)

December 31, 2030

Last Updated

July 1, 2025

Record last verified: 2025-06

Data Sharing

IPD Sharing
Will not share

Locations