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Tranexamic Acid

Phase 2

Hemorrhage | Small molecule | Hematology |United Therapeutics Corporation|Last Updated: May 6, 2026

Target and mechanism

Molecular targetPLG
Target classInhibitor
ModalitySmall molecule
ChEMBLCHEMBL877

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment150

FDA Designations

No designations recorded

Clinical trial landscape

Tranexamic Acid · 2 trials · 5 indications

Phase 2 2
NCT02535949Tranexamic Acid Mechanisms and Pharmacokinetics in Traumatic InjuryHemorrhage
COMPLETED150 Analytics
NCT02314988Tranexamic Acid to Reduce Blood Loss in Spine SurgerySpinal Injuries
RECRUITING252 Analytics
PHASE2COMPLETED
Tranexamic Acid Mechanisms and Pharmacokinetics in Traumatic Injury
HemorrhageUnlock trial analytics
PHASE2RECRUITING
Tranexamic Acid to Reduce Blood Loss in Spine Surgery
Spinal InjuriesUnlock trial analytics

Study Endpoints

Primary Endpoints

Change in HLA-DR Expression on Monocytes 72 Hours After Drug or Placebo Administration in Patient Groups (0g TXA (Placebo); 2g TXA; 4g TXA)."
Samples Drawn through 72 hours after study initiation

Blood was drawn from patients at baseline (0 h, just before placebo or drug administration) and at 72 hours post placebo or drug administration. Leukocytes in these blood samples were stained with fluroescent antibodies specific for CD45, CD14, and HLA-DR, analyzed by flow cytometry, and the median fluorescen intensity (MFI) of HLA-DR signal was recorded for monocytes (CD45+CD14+). The fold change in HLA-DR expression from prior to placebo/drug administration to 72 h after placebo/drug administration ("0 h : 72 h") was calculated as HLA-DR MFI72hours ÷ HLA-DR CD14 MFI0hours. Non-paramteric one-way ANOVA (Kruskal-Wallis test) was performed between each treatment group at the given time pont, and the p-value reported.

Maximal drop in systemic hemoglobin concentration during the postoperative period
Patients will be followed through postoperative day 4

Secondary Endpoints

Differences in Cytokine Profiles Between the Three Study Groups
Samples Drawn through 72 hours after study initiation
Differences in Leukocyte Function Parameters Between the Three Study Groups
Samples Drawn through 72 hours after study initiation
Total Transfusion Volume CL
24 hours
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Tranexamic Acid 2 GramEXPERIMENTALOne time dose IV TXA 2 Grams given over 10 minutes within 2 hours of initial injury
Tranexamic Acid 4 GramEXPERIMENTALOne time dose IV TXA 4 Grams given over 10 minutes within 2 hours of initial injury
PlaceboPLACEBO_COMPARATORMatching Volume Normal Saline Placebo given IV over 10 minutes within 2 hours of initial injury
InterventionACTIVE_COMPARATORSubjects will receive tranexamic acid on the surgical wound.
Placebo controlPLACEBO_COMPARATORSubjects will receive placebo (saline solution) on the surgical wound.

Interventions

NameTypeDescription
Tranexamic AcidDRUGTranexamic acid is a man-made form of an amino acid (protein) called lysine. Tranexamic acid prevents enzymes in the body from breaking down blood clots.
PlaceboOTHERMatching Volume Normal Saline Placebo given IV over 10 minutes within 2 hours of initial injury
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Patients with traumatic injury that are ordered to receive at least 1 blood product and/or 2. Patients admitted to the Emergency Department with a traumatic injury and require immediate transfer to the operating room to control the bleeding 3. Able to receive the study drug w...

Countries:United States
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Frequently asked questions about Tranexamic Acid

What is Tranexamic Acid used for?

Tranexamic Acid is a small molecule being developed by United Therapeutics Corporation for use in spinal injuries and hemorrhage. It is currently in Phase 2 clinical trials to reduce blood loss in spine surgery and to study its mechanisms and pharmacokinetics in traumatic injury.

What does Tranexamic Acid target?

Tranexamic Acid is an antifibrinolytic agent that works by inhibiting the breakdown of blood clots. It does not target a specific molecular receptor but rather acts on the fibrinolytic system to stabilize clots and reduce bleeding.

Who makes Tranexamic Acid?

Tranexamic Acid is being developed by United Therapeutics Corporation, a publicly traded company listed on NASDAQ under the ticker symbol UTHR. The company is conducting Phase 2 clinical trials for this drug in the United States.

What phase is Tranexamic Acid in?

Tranexamic Acid is in Phase 2 clinical development. It is an investigational drug and has not been approved by the FDA for the indications being studied. Two Phase 2 trials are listed: one recruiting and one completed.

What clinical trials is Tranexamic Acid in?

Tranexamic Acid is being studied in two Phase 2 trials. NCT02314988 is a randomized, double-blind, placebo-controlled trial with 252 participants to reduce blood loss in spine surgery. NCT02535949 is a completed trial with 150 participants studying its mechanisms in traumatic injury.

Is Tranexamic Acid the same as TXA?

Tranexamic Acid is commonly known by the abbreviation TXA, though this alternative name is not provided in the available data. The drug is being investigated under the name Tranexamic Acid in clinical trials for spinal injuries and hemorrhage.