The purpose of the study is to evaluate the ability of placental angiogenesis markers to predict the risk of PE in pregnancy in women with primary APS.
To construct reference intervals of placental angiogenesis markers specific to women affected by primary APS in pregnancy by measuring the levels of sFlt-1and PlGF in serum maternal serum and their sFlt-1/PlGF ratio during the trimesters of gestation (I TM, II TM and III TM).
For this aim the study will involve recruiting two groups of subjects, one will be cases and one will be controls.
Group 1
Pregnant patients between the ages of 18 and 45 years.
Diagnosis of primary APS, according to international classification criteria.
Group 2
Group 1
PMA pregnancies.
Known chronic pathology in gestational period such as chronic essential hypertension, neurological pathology
Previous thrombotic event
At least 60 patients aged 18-45 years will be enrolled between the first and third trimester of gestation, specifically 40 pregnant patients with primary APS (Group 1) and 20 pregnant patients without APS (Group 2) followed at the outpatient clinics of Obstetrics and Pregnancy Pathology of the participating centers. All patients will be asked to sign an informed consent prior to the collection of data and biological material.
Case-control
Prospective
Collection of epidemiological and anamnestic data and collection of biological material (peripheral blood)
Other interventionPatients will be enrolled in the study during the first trimester of gestation or later, if the diagnosis of APS is made during pregnancy followed by clinical practice. During the quarterly visits scheduled by clinical practice, the following will be collected relevant clinical information and the additional biological samples for analysis of serum levels of sFlt-1 and PlGF. A follow-up postpartum visit is scheduled by clinical practice at 6 weeks after completion of delivery.
Collection of epidemiological and anamnestic data and collection of biological material (peripheral blood)
Other interventionPatients will be enrolled during the performance of prenatal diagnosis, routinely chosen by the patient, at which the relevant clinical information and the additional biological sample . Collection of biological material in the 2nd and 3rd TM of gestation will take place at occasion of the routinely scheduled ultrasound scans . A postpartum follow-up visit is scheduled by clinical practice at 6 weeks after the completion of delivery.
To construct reference ranges of placental angiogenesis markers specific to women with primary APS in pregnancy
To construct reference ranges of placental angiogenesis markers specific to women with primary APS in pregnancy by measuring the levels of sFlt-1and PlGF in serum maternal serum and their sFlt-1/PlGF ratio during the trimesters of gestation (I TM, II TM and III TM).
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