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Creatine kinase, platelet aggregation, and bleeding risk in women with uterine leiomyomas

Main study:We want to assess whether bleeding risk in women with uterine leiomyomas is associated with CK activity and attenuated platelet aggregation.Objective of pilot study:Firstly, to perform a feasibility pilot of CK/AK measurement in menstrual…

Recovery and survival of platelet concentrates in plasma and in 3 additive solutions

The objectives of this study is to determine the recovery and survival of platelet concentrates; in the first phase, a comparison will be made for platelet concentrates in plasma stored for 2-3 days versus those stored for 6-7 days; in the second…

Regulation of prothrombotic factors in blood of type II diabetes mellitus patients

The objectives of this study are to gain new insights on [1] the cause of a higher clopidogrel resistance in DMII patients[2] the increased production of tissue factor in monocytes in DMII patients

The effect of anagrelide and hydroxyurea on platelet function in patients with Essential Thrombocytosis.
An observational in vitro and ex vivo study on the dynamic conditions of platelet function and (systemic) coagulation activation.

1. To compare the platelet function between healthy controls and patients with ET under both static and dynamic conditions. 2. To study the effects of anagrelide and hydroxyurea on platelet function. 3. To study the intrinsic platelet activation…

Platelet behaviour in Hereditary Thrombocytopathies.
An observational study on the platelet characteristics of a known bleeding disorder with two novel instruments.

To characterise the different platelet activating pathways using the FACS assay and the different steps of primary hemostasis with a perfusion flow model in patients with hereditary thrombocytopathies; Storage Pool Disease (SPD), Glanzmann*s…

Platelet function in minimal extracorporeal circulation versus conventional extracorporeal circulation in coronary artery bypass grafting

This study evaluates if there is a difference in platelet function during and following the use of minimal ECC compared with conventional ECC in coronary artery bypass grafting (CABG) analysed with tromboelastography en multiple electrode aggrometry…

Inhibition of platelet activation by clopidogrel in type II diabetes mellitus patients

The objective of the study is to gain new insights in the causes of a higher clopidogrel resistence in type II diabetes mellitus patients

Phase IV, one-day, single blood sampling study to investigate severe thrombocytopenia and autoimmune diseases in psoriasis subjects previously treated with Raptiva (efalizumab) in the framework of the European Observational Safety Study 25878 (CLEAREST).

PrimaryTo assess the prevalence of anti-efalizumab positivity in two sub-populations of psoriatic subjects trated with Raptiva® in the framework of the CLEARESTTM study:- Subjects developing adverse events (AEs) corresponding to pre-specified newly…

National study of inherited platelet function disorders in the Netherlands

Primary objective: to register and investigate Dutch patients suspect for an inherited platelet function disorder, to assess clinical presentation, bleeding score, treatment, burden of disease and quality of life. Secondary objectives: to…

Exploring the clinical utility of a novel multichannel platelet function test in patients with stable coronary disease

The main objective of the current study is to investigate platelet reactivity and underlying mechanisms using the novel multi-microspot analysis in a group of patients with SIHD and a healthy control group.

Exploring bleeding risk and platelet function combined with multiple omics techniques in 22q11.2 deletion syndrome

- To assess platelet (dys)function in adults with 22q11.2DS and its association with bleeding history.- To identify alterations in metabolic pathways in 22q11.2DS that may be of relevance to mechanisms underlying neurodevelopmental and…

A 4-part Phase 1/2 study to evaluate the safety, tolerability, pharmacokinetics, and pharmacodynamics of M254 in healthy volunteers and in patients with immune thrombocytopenic purpura.

The purpose of this study is to investigate how safe the new compound M254 is and how well it is tolerated when it is administered to healthy volunteers and patients with immune thrombocytopenia (ITP). M254 has not been administered to humans before…