Bleeding of Unknown Cause: a Swiss Case-control Study

NCT ID: NCT05713734

Last Updated: 2024-12-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

400 participants

Study Classification

OBSERVATIONAL

Study Start Date

2023-04-01

Study Completion Date

2027-04-01

Brief Summary

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The goal of this prospective cohort is to identified specific biological patterns in patients with a bleeding of unknown cause and to study the specific mechanisms of the bleeding disorder for each subset of patients.

Detailed Description

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Patients with bleeding of unknown cause are included. At baseline, blood will be drawn to evaluate the hemostatic profile. Findings are compared to a control group of healthy individuals. Patients and controls are followed for 3 years.

Conditions

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Bleeding Disorder

Keywords

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Bleeding Hemostatics Fibrin Fibrinolysis Thrombin

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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Patients

Patients with bleeding of unknown cause

Thrombin generation

Intervention Type DIAGNOSTIC_TEST

Measurement of thrombin generation by ST Genesia

Fibrinolysis

Intervention Type DIAGNOSTIC_TEST

Measurement of fibrinolysis by Lysis Timer

Fibrin clot structure

Intervention Type DIAGNOSTIC_TEST

Measurement of fibrin polymerisation and permeability

Coated platelets

Intervention Type DIAGNOSTIC_TEST

Measurement of coated platelets by flow cytometry

Controls

Healthy voluntaries without bleeding tendency

Thrombin generation

Intervention Type DIAGNOSTIC_TEST

Measurement of thrombin generation by ST Genesia

Fibrinolysis

Intervention Type DIAGNOSTIC_TEST

Measurement of fibrinolysis by Lysis Timer

Fibrin clot structure

Intervention Type DIAGNOSTIC_TEST

Measurement of fibrin polymerisation and permeability

Coated platelets

Intervention Type DIAGNOSTIC_TEST

Measurement of coated platelets by flow cytometry

Interventions

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Thrombin generation

Measurement of thrombin generation by ST Genesia

Intervention Type DIAGNOSTIC_TEST

Fibrinolysis

Measurement of fibrinolysis by Lysis Timer

Intervention Type DIAGNOSTIC_TEST

Fibrin clot structure

Measurement of fibrin polymerisation and permeability

Intervention Type DIAGNOSTIC_TEST

Coated platelets

Measurement of coated platelets by flow cytometry

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Man with ISTH BAT\>3. If the calculated score includes a surgical bleeding, then two other items of the score should be \>0
* Woman with ISTH BAT \>5 points. If the calculated score includes a surgical or a postpartum bleeding, then two other items of the score should be \>0

Exclusion Criteria

* Ongoing pregnancy
* Intake of antithrombotic treatment or non-steroidal anti-inflammatory drugs for least 10 days at time of blood collection
* Intake of antifibrinolytic or blood product administration (factor concentrate, frozen fresh plasma, prothrombin complex concentrate) for least 14 days before blood collection
* Active cancer (defined as cancer diagnosis within the last five years or treatment within the two last years before study inclusion)
* Active autoimmune disease
* Active chronic inflammatory disease
* Severe liver disease (cirrhosis \> Child A)
* Renal insufficiency stage 3
* Active or recent infection (within the last 30 days)
* Recent hospitalization (\<3 months)
* Recent surgery (\<3 months)
* Recent trauma requiring medical intervention (\<3 months)
Minimum Eligible Age

16 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University Hospital, Geneva

OTHER

Sponsor Role lead

Responsible Party

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Casini Alessandro

Principal investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Alessandro Casini

Role: PRINCIPAL_INVESTIGATOR

University Hospitals of Geneva

Locations

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Ospedale Regionale di Bellinzona

Bellinzona, , Switzerland

Site Status RECRUITING

Inselspital - Universitätsspital Bern

Bern, , Switzerland

Site Status RECRUITING

University Hospital

Geneva, , Switzerland

Site Status RECRUITING

Centre Hospitalier Universitaire Vaudois

Lausanne, , Switzerland

Site Status RECRUITING

Gruppo Ospedaliero Moncucco

Lugano, , Switzerland

Site Status RECRUITING

Kantonsspital St.Gallen

Sankt Gallen, , Switzerland

Site Status RECRUITING

USZ - Universitätsspital Zürich

Zurich, , Switzerland

Site Status RECRUITING

Countries

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Switzerland

Central Contacts

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Alessandro Casini

Role: CONTACT

Phone: 0041223729757

Email: [email protected]

Facility Contacts

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Eugenia Biguzzi

Role: primary

Ioannis Chanias

Role: primary

Alessandro Casini

Role: primary

Lorenzo Alberio

Role: primary

Ida Martinelli

Role: primary

Lukas Graf

Role: primary

Jan-Dirk Studt

Role: primary

Other Identifiers

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CCER 2022-02121

Identifier Type: -

Identifier Source: org_study_id