ThRombosis ExclUsion STudy (TRUST)

February 3, 2025 updated by: Diagnostica Stago

Primary objective: To demonstrate the ability of STA® - Liatest® D-Di XL combined with a clinical PreTest Probability (PTP) to safely exclude pulmonary embolism (PE) and deep venous thrombosis (DVT) as measured by Negative Predictive Value (NPV) and sensitivity.

Secondary objectives:

  1. To estimate additional STA® - Liatest® D-Di XL accuracy parameters, including specificity and positive predictive value (PPV)
  2. To constitute a plasma bank to be used for future studies with other DDi assays under development by Stago.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The study population will be selected from prospective, consecutive ambulatory outpatients suspected of having venous thromboembolism. Patients will be diagnosed for VTE (PE or DVT) based on local standard of care. Samples will be collected (additional blood draw or additional volume during blood draw) for future testing with new D-Dimer assay.

In case of Low/Moderate PTP score and negative VTE diagnosis, patients will be followed for 3 months to evaluate potential development of deep venous thrombosis and/or pulmonary embolism.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
5935

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Belgium
      • Bruxelles, Belgium
        • Cliniques Universitaires St Luc
  • France
      • Angers, France
        • CHU
      • Dijon, France
        • CHU
      • Grenoble, France
        • CHU
      • Rouen, France
        • CHU
  • Italy
      • Bologna, Italy
        • University Hospital S. Orsola-Mapighi
  • Spain
      • Sevilla, Spain
        • Hospital Universitario Virgen del Rocio
      • Soria, Spain
        • General Hospital
  • United States
    • Connecticut
      • New Haven, Connecticut, United States, 06510
        • Yale New Haven Hospital
    • Illinois
      • Chicago, Illinois, United States, 60611
        • Northwestern Medical Center
    • Indiana
      • Indianapolis, Indiana, United States, 46202
        • Indiana University Health
    • Kentucky
      • Campbellsville, Kentucky, United States, 42718
        • Taylor regional Hospital
    • Massachusetts
      • Boston, Massachusetts, United States, 02114
        • Massachusetts General Hospital
    • Missouri
      • Saint Louis, Missouri, United States, 63110
        • Washington University
    • North Carolina
      • Durham, North Carolina, United States, 27710
        • Duke Hemostasis and Thrombosis Research Center
    • Ohio
      • Columbus, Ohio, United States, 43210
        • Ohio State University
    • Pennsylvania
      • Allentown, Pennsylvania, United States, 18103
        • Lehigh Hospital
      • Bethlehem, Pennsylvania, United States, 18015
        • St Luke's University Health Network
      • Philadelphia, Pennsylvania, United States, 19107
        • Jefferson University Hospital
    • Texas
      • Dallas, Texas, United States, 75390
        • UT Southwestern

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

No older than 76 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

The study population will be recruited from prospective, consecutive, ambulatory outpatients (presenting at the emergency unit or outpatient clinic) suspected of having VTE. Patients with DVT and PE will be analyzed as separate groups.

Description

Inclusion Criteria:

  1. Patient is < 80 years old.

  2. Patient presents at least one of these symptoms indicative of proximal DVT or PE:

    • symptoms for proximal DVT: leg pain, tenderness (discomfort through palpation), leg swelling, and /or edema,
    • symptoms for PE: hemoptysis, lung related chest pain, dyspnea.
  3. Patient provides written informed consent to participate in the study
  4. Patient is willing to comply with specified follow-up evaluation at 3 months and can be contacted by telephone.

Exclusion Criteria:

  1. Patient presenting with a condition that may be associated with increased D-dimer levels, even in the absence of VTE, such as:

    • Fibrinolytic therapy within the previous seven (7) days,
    • Disseminated intravascular coagulation
    • Bone fracture or surgery (with general anesthesia longer than thirty (30) minutes) within the previous one (1) month,
    • Deep hematoma diagnosed by imaging techniques within the previous one (1) month,
    • Disseminated malignancies and active cancer (active cancer defined as: cancer for which therapeutic or palliative treatment is either ongoing at the time of enrolment or has stopped less than six (6) months before enrolment),
    • Sepsis, severe infections, pneumonia within the previous 1 month,
    • Known liver cirrhosis,
    • Pregnancy or having delivered within the previous 1 month,
    • Atherosclerotic vascular disease thrombosis within the previous 1month (e.g. myocardial infarction, stroke, coronary syndrome, peripheral artery disease stage III or IV),
    • Sickle cell disease,
  2. Patients presenting with a suspect thrombotic event related to catheter implantation
  3. Ongoing therapeutic anticoagulants (curative and preventive regimen) started twenty four (24) hours or more before blood draw (except aspirin and platelet inhibitors)
  4. Previous anticoagulant therapy stopped less than three (3) months before blood draw (except aspirin and platelet inhibitors)
  5. Patients with previous DVT/PE occurred less than three (3) months from screening.
  6. Suspect thrombotic events in other locations at screening, including distal to the knee and upper extremity DVT (based on standard of care examinations)
  7. Patients with known tissue plasminogen activator (tPA) deficiency
  8. Patient participating or who has participated within one month of enrolment in another investigational study
  9. Major co-morbid condition(s) or other reasons that could limit the patient's ability to participate in the study or to comply with follow-up requirements, or impact the scientific integrity of the study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Pulmonary Embolism (PE)

Patients presenting with PE suspicion. Diagnosis will be performed according to Standard of Care. Plasma samples will be collected if PTP score is Low or Moderate. If diagnosis is negative, patients will be followed for 3 months to evaluate potential VTE development.

Enrolment completed for this group : 13th February 2020
Diagnostic test: DDimer test
Measuring the level of DDimer in blood sample
Deep Venous Thrombosis (DVT)

Patients presenting with DVT suspicion. Diagnosis will be performed according to Standard of Care. Plasma samples will be collected if PTP score is Low or Moderate. If diagnosis is negative, patients will be followed for 3 months to evaluate potential VTE development.

Enrolment completed for this group : 29th March 2023
Diagnostic test: DDimer test
Measuring the level of DDimer in blood sample

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
VTE Exclusion
Time Frame: Initially, we planned to enroll subjects suspected of PE/DVT to constitute a plasmabank, then perform testing of STA- Liatest D-Di XL for on this latter on 48 months. However due to plasmabank unstability, Stago decided to not perform the testing phase.

According to the ThRombosis ExclUsion STudy (TRUST) protocol, the primary objective of the study was to demonstrate the ability of STA® - Liatest® D-Di XL combined with a clinical PreTest Probability to safely exclude pulmonary embolism (PE) and deep venous thrombosis (DVT) as measured by Negative Predictive Value (NPV) and sensitivity.

The first step was to evaluate the stability of the plasmabank using VIDAS system. The preliminary results showed that the plasmabank was unusable with a high rate of unstable samples. Stago, decided to not use this plasmabank to assess the ability of STA® - Liatest® D-Di XL to safely exclude PE and DVT.
Initially, we planned to enroll subjects suspected of PE/DVT to constitute a plasmabank, then perform testing of STA- Liatest D-Di XL for on this latter on 48 months. However due to plasmabank unstability, Stago decided to not perform the testing phase.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
VTE Exclusion
Time Frame: Initially, we planned to enroll subjects suspected of PE/DVT to constitute a plasmabank, then perform testing of STA- Liatest D-Di XL. Due to plasmabank unstability, Stago decided to not perform the testing phase for the STA-D-Di XL and future DDi assays.

According to the ThRombosis ExclUsion STudy (TRUST) protocol, the secondary objectives of the study were:

  1. To estimate additional STA® - Liatest® D-Di XL accuracy parameters, including specificity and positive predictive value (PPV)
  2. To constitute a plasmabank to be used for future studies with other DDi assays under development by Stago.

The first step was to evaluate the stability of the plasmabank using VIDAS system. The preliminary results showed that the plasmabank was unusable with a high rate of unstable samples. Stago, decided to not use this plasmabank to assess the ability of STA® - Liatest® D-Di XL to safely exclude PE and DVT and to not use this plasmabank for future studies with other DDi assays under development by Stago.
Initially, we planned to enroll subjects suspected of PE/DVT to constitute a plasmabank, then perform testing of STA- Liatest D-Di XL. Due to plasmabank unstability, Stago decided to not perform the testing phase for the STA-D-Di XL and future DDi assays.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Diagnostica Stago

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 25, 2018

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 29, 2023

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 5, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 20, 2018

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 20, 2018

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 27, 2018

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 25, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 3, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • TRUST study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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