- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT07653672
Role of Viscoelastometric Testing in the Development and Validation of a Clinical-biological Score for Predicting Bleeding in Patients With Malignant Haematological Disorders and Severe Thrombocytopenia (VISCOTHEM-2)
The goal of this single-center, non-controlled, non-randomized exploratory clinical trial is To develop and validate a clinical-biological score (VISCOTHEM score) incorporating viscoelastometric tests parameters; based on an association study, and to establish a threshold that enables the prediction of the immediate risk of bleeding in haematology patients with severe thrombocytopenia (<20 G/L); with a view to selecting a population with a residual risk of bleeding of zero (NPV ≥ 95%, to achieve a residual probability of bleeding < 5%).
The score may incorporate variables identified in the literature as having a plausible causal relationship with the occurrence of bleeding (14,15), as well as viscoelastometric tests parameters, conventional haemostasis parameters and relevant clinical parameters. .
Participants will undergo an additional blood sample to standard care. The total volume of blood drawn will be 21.1 mL. The following analyses will be performed: Quantra®, Rotem®, blood count, platelets, immature platelet count, plasma prothrombin time, activated partial thromboplastin time, International Normalized Ratio, fibrinogen, urea, creatinin, albumin.
Descripción general del estudio
Estado
Intervención / Tratamiento
Tipo de estudio
Inscripción (Estimado)
Contactos y Ubicaciones
Estudio Contacto
- Nombre: Marion GHIDI
- Número de teléfono: +33450637031
- Correo electrónico: mghidi@ch-annecygenevois.fr
Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Método de muestreo
Población de estudio
The patients included will be selected from the entire cohort of patients with haematological malignancies:
- those admitted to the haematology day unit for treatment or assessment,
- or patients admitted to the haematology inpatient ward,
- or patients being monitored in the haematology outpatient clinic.
Descripción
Inclusion Criteria:
- Adult patients;
- Who have been informed about the study and have freely given their informed consent to participate in the study;
- With a malignant haematological disorder or bone marrow failure, whether treated or untreated and at any stage of treatment;
- With central thrombocytopenia strictly below 20 G/L in a blood sample taken less than 72 hours ago and not having received a transfusion since;
- Admitted to a haematology day unit or inpatient ward, or being followed up at a haematology outpatient clinic;
- With or without active bleeding;
- Affiliated with or covered by a social security scheme.
Exclusion Criteria:
- Patients who have received at least one of the following treatments:
- Antiplatelet agents within 7 days prior to enrolment,
- Vitamin K antagonists within 7 days prior to enrolment,
- Direct oral anticoagulants within 72 hours prior to enrolment,
- Low molecular weight heparin within 24 hours prior to inclusion,
- Unfractionated heparin within 6 hours prior to inclusion,
- Bruton's tyrosine kinase inhibitor (ibrutinib, zanubrutinib or acalabrutinib) within 72 hours prior to inclusion;
- Patients with a history of thrombopathy;
- Patients with a history of haemostatic disorders carrying a risk of haemorrhage or thrombosis;
- Thrombocytopenia associated with immune thrombocytopenic purpura or disseminated intravascular coagulation;
- Patients already enrolled in the study;
- Pregnant or breastfeeding women;
- Patients under guardianship or curatorship;
- Patients who do not understand French;
- Patients under judicial protection.
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
Intervención / Tratamiento |
|---|---|
|
Intervention (additional blood sample)
|
A blood sample will be taken from all patients included in the study.
This blood sampling is an added act of the study.
It will be performed as soon as possible after inclusion in the study.
The total volume of blood drawn will be 21.1 mL.
The following analyses will be performed: Quantra®, Rotem®, blood count, platelets, immature platelet count, plasma prothrombin time, activated partial thromboplastin time, International Normalized Ratio, fibrinogen, Urea, Creatinine, Albumin.
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Identification of factors associated with bleeding among clinical and laboratory parameters
Periodo de tiempo: At baseline, before platelet transfusion
|
Clinical parameters : Age, Sex, BMI, systolic and diastolic blood pressure, presence of mucositis, presence of a lesion with haemorrhagic potential, bleeding within the previous 5 days, fever associated with an infection or an episode of febrile neutropenia, transplant within the previous 100 days Laboratory parameters : viscoelastic test parameters, white blood cell count, Haemoglobin, Platelet and immature platelet counts, Urea, Creatinine, Albumin, Standard haemostasis (APTT, INR, Fibrinogen)
|
At baseline, before platelet transfusion
|
|
Apply a multivariate regression model to develop the VISCOTHEM score for predicting immediate bleeding (WHO score ≥ 1), based on the coefficients of the factors associated with bleeding
Periodo de tiempo: At baseline, before platelet transfusion
|
At baseline, before platelet transfusion
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Stratification and comparison of performance and score calibration depending on whether the viscoelastic test result is obtained using ROTEM® or Quantra®.
Periodo de tiempo: At baseline, before platelet transfusion
|
To propose a score capable of processing a viscoelastic test result from either ROTEM® or Quantra®,
|
At baseline, before platelet transfusion
|
|
Describe the presence of bleeding according to the WHO classification (WHO score ≥1) and WHO bleeding grade, where applicable
Periodo de tiempo: 72 hours after blood sample
|
72 hours after blood sample
|
|
|
Describe the presence of platelet transfusion
Periodo de tiempo: 72 hours after blood sample
|
72 hours after blood sample
|
|
|
Describe the Vital status or loss of follow-up, where applicable
Periodo de tiempo: 72 hours after blood sample
|
72 hours after blood sample
|
Colaboradores e Investigadores
Patrocinador
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Estimado)
Finalización primaria (Estimado)
Finalización del estudio (Estimado)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 24-10
- 2026-A00535-46 (Otro identificador: ID-RCB (ANSM))
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .
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