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NCT Number: NCT07288489

Phase 3 Trial of VMX-C001 vs Usual Pharmacological Care in Patients Taking a FXa Direct Oral Anticoagulant Who Require Urgent Surgery With or Without Heparin.

The goal of this clinical trial is to learn if VMX-C001 works to to allow blood clotting control in participants who take FXa Direct Oral Anticoagulants (DOACs) during surgery or other invasive procedures that carry a high risk of bleeding. The main question it aims to answer is:

● What is the proportion of participants in whom the stopping of bleeding was classed as good or excellent during the procedure, as judged by a group of experts who did not know which treatment was given?

Researchers will compare a fixed dose of VMX-C001 to the usual treatment that would be given for the required procedure.

Participants will:

* Be given either a fixed dose of VMX-C001 or usual treatment before they undergo the required procedure in theatre * Have regular clinical assessments, including laboratory tests, during their hospital stay following the procedure * Return to the clinic for a check-up and tests approximately 28 days after the procedure was conducted.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Royal Brisbane and Women's Hospital (RBWH), Herston, Queensland, Australia

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male or female patient aged ≥18 years.
  • The patient or legally authorised representative (LAR) has given written informed consent.
  • The patient requires urgent surgery/procedure for which the risk of bleeding is considered high and for which haemostasis is considered necessary.
  • The patient has a significant FXa DOAC level at the time of procedure.
  • The patient would require treatment (usual pharmacological care) to restore coagulation for the required procedure.
  • The patient must be willing to use appropriate contraception.

Exclusion criteria

  • The patient is known for any reason, other than administration of a FXa DOAC, to have an increased risk of bleeding compared to a patient in a similar clinical situation.
  • The patient has received any non FXa DOAC anticoagulants within 7 days of Screening or has received heparin (UFH or LMWH) within 3 days of Screening.
  • The patient has received any of the prespecified medications not allowed in the 7 days prior to Randomisation.
  • The patient was treated with an investigational drug <30 days or 5 half-lives, whichever is longer, prior to Screening.
  • Expected survival, in the Investigator's judgement, is <3 months due to comorbidity.
  • Patients in whom the Investigator considers it is not possible to estimate the expected blood loss.
  • Known "Do Not Resuscitate" order or similar advanced directive.
  • Cardiogenic shock at the time of screening unless related to the need for the required procedure.
  • The patient has sepsis (including severe sepsis or septic shock) at the time of screening.
  • The patient is pregnant or a lactating female.
  • Known hypersensitivity to any component of VMX-C001 or hamster proteins.
  • Patients who, in the opinion of the Investigator, should not participate in the study for any other reason, or inability to comply with the protocol.
  • Prior exposure to VMX-C001.

Treatment and study plan

VMX-C001

Drug

A fixed dose of VMX-C001 will be administered prior to commencement of procedure.

Usual Pharmacological Care

Drug

Usual pharmacological care should be treatment planned to restore coagulation or support haemostasis for the required procedure.

Primary outcomes

  1. Effect of VMX-C001 versus usual pharmacological care on haemostasis

    Time frame: From start to end of required procedure (Day 1).

    Proportion of participants with good or excellent haemostatic efficacy during the required procedure.

Secondary outcomes

  1. Effect of VMX-C001 versus usual pharmacological care on FXa DOAC induced anticoagulation measured by dilute prothrombin time (dPT).

    Time frame: From Pre-procedure assessment compared to baseline (Randomisation) (Day 1).

    Change in dPT.

  2. Effect of VMX-C001 versus usual pharmacological care on FXa DOAC induced anticoagulation as measured by dilute Russell Viper Venom Time (dRVVT).

    Time frame: From Pre-procedure assessment compared to baseline (Randomisation) (Day 1).

    Change in dRVVT.

  3. Effect of VMX-C001 versus usual pharmacological care on the extent of actual blood loss compared to expected blood loss during procedure.

    Time frame: From start to end of required procedure (Day 1).

    Percentage of expected blood loss.

  4. Effect of VMX-C001 versus usual pharmacological care on bleeding severity.

    Time frame: Start of procedure (Day 1).

    Bleeding severity at the Start of procedure using a 5 point scale (grades 0 [no bleeding] to 4 [life threatening])

  5. Effect of VMX-C001 versus usual pharmacological care on bleeding severity prior to procedure.

    Time frame: Between Randomisation and Pre-procedure timepoint (Day 1).

    Bleeding severity measured by blood loss.

Study contacts

Contact information is provided by the study sponsor or research team.

Head of Clinical Operations

CONTACT

[email protected]

+43 664 88375193

Sponsors and collaborators

Lead sponsor

VarmX B.V.

Industry

Registry information

Official study title

A Phase 3 Prospective Randomised Clinical Trial of VMX-C001 vs Usual Pharmacological Care in Patients Receiving a FXa Direct Oral Anticoagulant (FXa DOAC) Who Require Urgent Surgery or Other Invasive Procedure That is Associated With a High Risk of Bleeding, With or Without Planned Administration of Heparin (EQUILIBRIX-S)

Acronym: EQUILIBRIX-S

Important dates

Study start
2026
Primary completion
2029
Study completion
2031
First posted
Dec 17, 2025
Registry last updated
Feb 27, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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