The aim of this PROJECT is to develop two biomarkers to assess the thrombotic and hemorrhagic risk of patients with chronic renal failure (CKD) treated with antiplatelet drugs following the occurrence of an acute coronary syndrome (ACS). These biomarkers will help to adapt antiplatelet therapy on an individual basis (intensity, duration of antiplatelet treatment) and thus reduce the risk of thrombotic and hemorrhagic events in this particularly fragile population. The methods for measuring these two highly innovative biomarkers are currently being developed. The first biomarker corresponds to the measurement of an intraplatelet molecule, Rap1b in its active form (aRap1b). The second biomarker is the measurement of the pro-antithrombotic balance of circulating endothelial microvesicles (patEMV), a reflection of endothelial dysfunction. An automated method for biomarker measurement will be developed in partnership with the industrial partners Stago and BioCytex during the project.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
115
BLOOD SAMPLES
Assistance Publique Hopitaux de Marseille
Marseille, France
RECRUITINGaRap1b assay reproducibility
intraclass correlation coefficient and its 95% confidence interval (CI) for assessing the reproducibility over time of aRap1b-GTP for subjects from groups 1, 2, 3, and 5.
Time frame: 1 year
Reproducibility of pat EMV
intraclass correlation coefficient and its 95% confidence interval (CI) for assessing the reproducibility over time of microvesicle derived functional assays for subjects from groups 1, 2, 3, and 5.
Time frame: 1 year
Repeatability
Coefficient of variation will be determined for different levels of concentration of the analytes (aRap1b resting and activates states and pat EMV)
Time frame: 1 year
Analytical specificity
Best threshold values between samples containing the analyte (aRap1B) compared to negative samples which do not contain the analyte.
Time frame: 1 year
Range of values in each group
Mean, standard deviation, median, interquartile range
Time frame: 1 year
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